Refining Your Home Observation Site:
Why Do It-Where Do It-How It's Done
INTRODUCTION
Who Observes at Home?
Between an early 2007 CN forum poll and checks with the
local amateur observers, I estimate that nearly 3ž4 of amateur observers
use their home as their primary observing site. What was surprising to me from the poll was the regularity
of home observing. According to
the poll, if you put all home area observers in a group, they observe quite regularly-anywhere
from a dozen to a hundred times a year. The median group was 25 to 50 times per
year. In comparison, club
observing sites and other private yards (a place an observer visits-not his/her
own property) comprise the next most popular type of observing sites, but they
were a fraction of the more prolific and regularly used home sites. Other types
of observing sites were considered in the poll but were much less
prevalent. The results agreed with
my personal knowledge of friends' observing habits-most people observe from
their home.
What Is the Typical Home Observing Site?
Whether one looks at poll comments or checks with local
amateur club members, most home sites are unimproved in this sense: most
observers have a regular place they typically mount their equipment to get
their best views
without a lot
of light interference but
with some nearby conveniences (bathroom, food, bed, etc.). The typical area
does not have any special added features or refinements.
Why Improve a Home Observing Site?
Being creatures of habit, amateur astronomers seem to keep
using our home observing sites-usually longer than expected and without many
changes. My wife and I were the same until we stood back and examined our rate
of usage, which was 1-2 times per month for nearly every month of the year. Each time we observed, we used our
observing area from 4-6 hours.
This rate of usage led us to a decision process and some action to make improvements.
Our first step was to make a couple of slightly improved pads-one on each side
of our house (one facing north and the other facing south). A short time later we went through a
more serious planning effort and constructed a pad that was coupled to an
observing storage shed. Our
observing frequency quickly increased because of the increased convenience, the
improvements in light baffling, and the ease of set-up/take-down. In view of the large fraction of
unimproved home observing sites, this article is for those readers that might
also want to consider improving their areas. If you are like us, you may find that some simple steps in
the near term will yield more convenient and pleasurable observing.
A well planned and executed set of improvements can also
benefit your property-providing an attractive area that can be used for much
more than night sky observing. The overall costs vary from a few hundred to a
few thousand dollars, depending on the set of improvements. The scope of this
kind of project depends on your requirements and what improvements you deem
most necessary. The good news is
that a well thought out set of improvements is achievable in terms of cost and
effort. Our observing pad and storage cost about $3000 and took a year to
complete. Our rate of usage is now
over a couple hundred hours per year-not including uses outside astronomy,
which also increased dramatically.
The investment has been well worth the cost and effort. Even our first
less complicated improvements, however, were very useful, and cost just a few
hundred dollars-less than one premium eyepiece.
The Article's Approach.
Sections of the article essentially repeat the thinking and
action process we went through to improve our site in Crozet, Virginia. Our suggestions are not the only way to
do things. My wife and I brought
different issues to the table and considered them. Some of them may be pertinent to you; some may not. But we can provide some simple guidance
and thoughts about the process, the costs, and the results. Where possible, I will anchor the
process with comments relative to our improved observing area as well as the costs
and work associated with it. With your home site in mind, we invite you to
evaluate your own home site. Many
readers may have ideas of your own, please let us know and the rest of the community,
which is full of home observers just like you and me.
In each section, the things to think about or decide are in
normal text.
Text in italics
includes thoughts and applications peculiar to us so you can see an immediate
example after certain steps of the improvement process.
WHAT ARE YOUR REQUIREMENTS?
The first step is to list your overall requirements for an
observing period. What things are
most or least important for your astronomical observing? This general list helps a person
articulate their overall direction about what they want for a working observing
area. Great detail is not necessary-just a general list of high points. We recommend
planning and executing improvements based on your requirements and how you
think they may change over the next few years. Even if you do not think your
observing requirements will change, extending your list by expanding the things
you currently enjoy the most will serve to provide some ideas about how to
improve or extend your home observing site.
What we listed for our personal requirements:
- We
wanted to reasonably baffle any light interference during observing
periods (typically from an hour after dusk to midnight) for the next
several years.
- The
observing area had to be close to bathrooms, power, and light when we
wanted it. When we observe at home, we want it to be as easy as possible
and with modern conveniences.
- While
great sky view is an ideal goal (horizon to horizon in all four compass
directions), we wanted a section of sky that would permit us to see
Polaris and a wedge of sky that would permit us to observe as much of the
sky as possible during a full year. (I will talk about why this is
important later.) In other
words, we wanted to have the best conditions of home observing we could
but with a practical approach: do the very best with the most usable part
of the sky we had.
- With
these first 3 things in view, we would favor areas that would give us the
largest sky at any given time, but not at the expense of light
interference or attempting to see within 25 degrees of the horizon-where
atmospheric conditions prevents good observing during most occasions. This
means we would gladly sacrifice seeing a little sky if we could baffle
light interference better.
- We
wanted to plan for as large an area as possible to accommodate small
groups, more than one telescope, and space to move about. We already have
friends with observatories and small areas or observing sheds-most of would
not give us the elbow room or mobility that we desired. With this in view,
we also wanted to avoid permanently fixed telescope mounting locations.
- We
wanted our observing tools to be stored near our observing pad. Storage had to be easy to use in
the dark and had to have available space for our set of tools. We estimated that we wanted enough
room in the storage area to sit and enjoy reading our many references
about the skies. And, if we wanted to take a rest break during observing,
we wanted to be able to relax in the same space, so it had to be
reasonably enclosed but adjacent to the observing area.
- During
daylight hours, the observing pad area still had to be usable for other
things. Single purpose usage of space was something we wanted to avoid,
because it might lead us to solutions that would restrict other uses of
our property and may also affect sale value if we ever moved.
- I
had to be able to do the work.
In terms of cost and time, I was willing to fork out a few thousand
and have an extended work project for a year or so if the area was truly
multi-purpose and would most likely be used regularly. I wanted to avoid a
complicated process that demanded a lot of contractor help because cost
would very quickly get out of hand.
- I
wanted to have the smallest footprint possible with local ordinances, so
my choices were to result in as few restrictions as possible but still be
fully legal in terms of local code or neighborhood associations.
THE THINKING
PROCESS (THE MOST IMPORTANT STEPS BEFORE YOU BUY or BUILD ANYTHING)
Part A. What is Your Typical Observing Period and What Tools
Do You Use?
Every observer knows what tools he/she has but how things
might change over time can take a little more thought. It is important to think
about this since the array of telescopes and equipment determines a minimum
size and sometimes shape of an observing area. Do you have one scope or do you
have two or three? Do you typically like a table or chair nearby? Bottom line: list what equipment you expect to have laid out on a good
observing night for the foreseeable future (five years). Add to that list any items your
reasonably expect to add to your tool set during this same period. Keep the list handy and in front of you
as you think about your typical observing period.
What kind of observing period is typical for you? What would you like to do? It makes
quite a difference if you are a die-hard observer who stays up all night alone
with a single telescope or if you typically have a short period of observation
(a few hours) with a small group of people and several scopes. Do you socialize
and snack or eat when you observe or are you a loner and hold your eye at the
eyepiece the whole time? Do you set up in the dark or the light? Do you work a
large tool set (Go-To scopes with power tanks, star cameras or astro-video, an
array of EPs, etc.) and want lots of room or do you stay close and clustered to
your favorite scope and a few select EPs? Are you physically limited or
handicapped or do you expect visitors with physical limitations? All these
things affect the concept of an observing period that you enjoy. With these things in mind, describe the
observing period that you want and who is likely to be present but do it in
terms of the next five years by including any changes in observing habits that
you believe are reasonable.
Here is what we listed for the "Beard" observing period:
Our tool set typically involves putting up one medium Dobsonian
that has a 12 foot circle of
operation (12.5 inch f4.5 truss tube is about 6 feet high on it's platform). About 1ž2 the time, we want to put
up two scopes (adding an 8 or 5 inch SCT). With one or two scopes set up, we usually lay out a small
case with our finders, EPs, and related things; a second case with astro-video
equipment; and a third case with supporting equipment. On the site, we almost
always have two or three references (star charts, planispheres, and/or favorite
books/guides), several lights, one power tank, extension cords/power strips,
3-4 chairs, and one or two small tables.
Our conceptual observing period was augmented to include
guests, which we typically expected at the site up to 1ž2 of the time. In recognition of the likely size of
the group (a maximum of 10), our sleep habits, age, and past observing periods,
we arrived at our final model of an observing period for the next five years: 4-5
hours long (with set up and take down), arranged and organized to accommodate
10 people, and take place from dusk to 1 am (we rarely stay up after midnight). We also required artificial lighting
during take set up/take-down periods, quick access to bathrooms (less than a
minute away), and quick access to things hot or cold to eat or drink.
Last, we
wanted an area such that arriving or departing quests would not disrupt
participants' night vision or inadvertently trip over wires and scopes. In other words, the path to or from the
observing area should not go through the middle of equipment that was in use.
We also evolved a mobile observing site as a subset. It
will be briefly discussed at the end of this article. It uses some of the attributes of the home observation site.
Many of the same planning steps
are used
Part B. "Map" Your Home and Adjoining Property.
1.
Introduction.
This section must be done carefully because it is your reference for
existing conditions in terms of topography (land, trees, buildings, and lights)
that influence your available sky and the quality of that sky from the vantage
point of your observing site. It
is not a typical plat. Rather, you
are going to record anything that affects your visual horizon (now or in the
near future) or detracts from a dark sky.
This is where you make note the sources of artificial light AND the sources
of baffling (blocking) of light.
When this is done for a couple of selected observing pad locations, then
you estimate (which is all you can do) where things might get worse (more
houses built closer, new street lights, a new road, etc.). I recommend this be done for two
different locations in your yard.
If you have a very small yard and it seems you only have one choice,
then try to pick a second location in that small space, because appreciating
the differences between two candidate locations will help you refine you final
choice. The steps that follow will lead you through the recording process.
2.
Recording Your Information and How to Measure Things. Nearly
every amateur uses a planisphere to find major stars. Almost every planisphere has an oval or circle to represent
the sky. Figure
1 (next page) shows an adaptation of a classic planisphere for recording
your sky information. The edge of
the oval is horizon. Its center is zenith or the line that extends vertically
from your property. Cardinal directions are clearly marked (N, S, E, and W) on
the edge or horizon. Of course,
time and date does not matter for mapping boundaries of the sky and
obstructions but compass directions are important for orientation. Inside the
oval or horizon line I have drawn two concentric circles some distance apart.
The distance between these lines on my "planisphere" is 25 degrees. Nearly any scale is OK but I
suggest letting the distance between the concentric circles represent 25
degrees in elevation, which is the angular distance between the end of your
thumb and the end of your little finger when your hand and arm are
outstretched. Thus, measuring things is pretty easy for the level of precision
that is needed to define available sky at a home observing site. Of course, everything you measure will
be from the estimated horizon (or level) and up. If you have trouble determining what level or horizon is to
start with, then use a simple bubble level to help you sight it as you record
the available sky and what interferes with that sky. As it states on the figure, the objective is to stand on your
proposed observing site and face every 45 degrees or so-recording significant
sky obstructions and light sources that extend up to about 50 degrees in
elevation (two or three "handwidths").
Of course, it is relatively
easy extend the recording of any obstructions that reach higher angular
elevations.
Figure
1 follows
3.
Choosing Two Observing Points to Record Available Sky. Keeping
in mind that the planisphere is your recording device, you want to identify
things that produce light and things that baffle light. In this sense, every tree, building,
street light, antenna, mountain, big bush, or children's playhouse can be defined
by how much it blocks your view of the sky. It is these things you want to record with reasonable
accuracy using your "outstretched hand measuring device". With this in view,
you next step is to choose two different locations that you believe are your
best observing locations on your property. Try to pick areas that you already
know have a reasonable view of the sky AND are in agreement with your
requirements for a future improved observing site with respect to power, light,
and convenience. A couple things
to remember that we have learned:
do not be afraid to be relatively close to your house or in your
driveway if conveniences are important to you. Light baffling can often be
handled for these locations. If
you have a choice, let one of your chosen observing locations be in part of
your yard where your house or a neighbor's house actually becomes the light
baffle for the most obvious and annoying light sources (these are typically
cars and street lights). Also, don't worry about choosing a site near a
rooftop-where you might be looking at objects directly over a rooftop. People say that rising heat from roofs
can ruin your views but my experience suggests that the influence of a hot roof
on your observing is not that obvious unless you have an incredibly large scope
and you have perfect eyes. A much more dominant affect on your views comes from
the temperature condition of your optics (making sure they are cooled down).
4.
What Kind of Sky Area Is Best? In terms of compass directions,
we have found that a north/south strip of
sky is best in terms of viewing throughout a year period. In this light (no pun intended), having
a stretch of sky from Polaris and as far South as you can go is nearly ideal. A nice wide band from East to West is
nice but a narrow band is fine because earth's rotation and seasonal changes
will eventually enable you to see nearly everything. Remember, if you run your outstretched hand and arm from
North to South, you will "cutout" a 25 degree window in the sky, which is over
an hour and a half of time in terms of apparent sky rotation for any star or object
that is overhead or a bit toward the South. When you are close to Polaris, the
same strip of sky covers even more time.
If you look at figure 2, you can see example
wedges of the sky with considerable east/west obstructions.
Figure 2 follows
As you can see from the notes on
the figure, the whole idea is to make best use of the sky region that you can
get. On the figure, the red area
is about 25 degrees wide (east/west) and represents about an hour and a half
viewing time. The additional green area extends the viewing time to about 2.5
hours and is about 50 degrees wide in the east/west direction. If you can get this wedge, it means you
will be able to see nearly everything within a year period even if you cannot
get close to the Eastern or Western horizons!! Many people think a restricted
viewing area like this is not good, but not necessarily in the terms of viewing
over a year period. In this view,
getting a north/south strip of sky is better than an east/west strip. So, if you have a choice, go for a site
that gives you the best choice possible but do not be dismayed if it is not
"ideal". We are also not in favor
of "moving mountains" to get the last 25-35 degrees near any horizon. In practical terms, it is usually not
worth the effort because of the "amount" of atmosphere one must look through in
order to see an object that is close to the horizon. Last, do not worry about singular sources of annoying light
(a neighbor's bright security light or a single street light) since a
few
sources can usually be handled in a number of ways. If possible, avoid areas of
light or sky glow that take up large areas of the sky. These are much harder to deal with.
With this information in mind, select two observing locations in your yard that
you believe will be best for you. For urban observers, do not be dismayed by
nearby multi-story buildings-simply follow the same reasoning and choose as
best as you can.
5.
Actual Recording of Sky Information. Take your modified planisphere
template with compass directions to the first location, orient it properly
relative to compass directions, and use your hand measuring "tool" to estimate
the sky that is blocked as you turn in a circle from the center of the
observing location you have chosen.
Do the same procedure for the second location. Check the information and refine it (if you need to) by
repeating the same procedure at night ? at a time you would normally expect to
be observing. Think about any changes that are affected by trees losing their
leaves. Last (but not least), look at your results and think in terms of the
most likely changes that will occur over the next five years. Think like a
developer and a local county planner who are trying to find homes for a growing
population. What new houses could
be built, where, how high, and how much light will they contribute? Note or
anticipate new roads, increased traffic, or street lights. If time permits, check astronomy light
conditions that are already recorded for the region. Also check county planning documents for your immediate area
for likely changes. Ask your county or town planning department official about
whether you are in a growth area and try to get a general description of what
that means for where you live. Using your best guess from any investigation you
do, add any pertinent information to your planisphere in terms of worsening
light pollution that you think might occur over the next five years. Last, if you want to make a regional
check of dark conditions for your area, then check dark sky maps on the web for
your area or check with local astronomy club members about this kind of
information (they usually keep track of it). It usually provides average conditions
of dark sky for your region and can confirm the directions from which most sky
glow originates.
Figure 3 illustrates
our first attempts at making observing pads immediately adjacent to our house.
We conducted a more detailed planning process for a site that was removed from
the house a little bit. We did this before we learned to map our sky-following
the directions explained above. Figure 4 shows the site of our more detailed
evaluation and the planisphere view of our primary site is shown in figure 5. I have shown some extra detail on the figures so you can see
our thoughts about things that influenced available sky and light conditions.
The figure notes show that we considered approaching car lights on nearby roads,
nearby residential sources of light, a nearby "mountain", sky glow from two
towns, and various other things that we thought might affect our decision and
action plan. We also considered both summer and winter since light conditions
changed when leaves were not on the trees to block house lights. We also observed at each location with
scopes before going any further.
We knew where sky glow was a factor and thereby avoided trying to get
more sky in an area that was already compromised.
Figures 3 follows
Figure
4 (Primary Observing Site) and 5 ("Planisphere" for an Observing site) follow
on the next 2 pages
Part C. Select Your Preferred Area and Layout a "Bird's Eye
Sketch
Selecting your preferred area depends on your preference
that is based on two things: the
planisphere information AND where your tool set (observing equipment) is going
to come from. For the young and
vigorous, where your "stuff" comes from may not make a difference, but we have
found that having easy access and a good route between the observing site and
the location of the stored observing equipment is VERY important. If you believe this is somewhat
important to you, then choose the site that has acceptable sky but also has
easy access to your equipment. For
a moment, you have to presume the stuff will come from the nearest door of your
home or from a separate storage you will plan and build. With your selected
area marked clearly, make a simple sketch of your property and adjoining
properties/roads (
see our example in figure 6,
next page).
It is easiest to use a copy of your plat. If you do not have a copy, make a
simple sketch or you can go to the local county/city office and use a small
copy of a planning document for your area. You can make a site selection without this step but we have
found the step useful because it reminds us of our definition of where things
are around us that can affect sky conditions.
Part D. Decision Time for Storage and Observing Site Detail
1.
Star Stuff Storage-Choices for What You WILL Own & Where
It WILL Be Kept. Storing and set up/take down of your star stuff is nearly as
important as your observing site.
I received good advice when I was a brand new observer when a vendor
told me that my favorite scope was the one I used the most-regardless of what I
said. With this in mind, getting
that scope and the related stuff set up and taken down is probably the most
dominant factor that affects how much it is used. If it is a real pain to set things up or put the mess away,
you will not use it unless conditions are really good. On the other hand, if
the "star" storage is easy to use, a pleasure to use, and makes observing
better, then the tools will get used a lot-even if seeing conditions are
marginal. With this in mind, read onÉ.
a.
What Star Stuff Will You Store? In Part A you constructed a present
and near-term list of scopes and stuff that you expect to be using for the next
five years. It is time to revisit
that list and see if there is anything else you want to add or subtract. The second glance is worth the time
because you have thought through and selected your observation site. Given your
idea of reasonable money and the things you want to do with amateur astronomy
during the next few years, make adjustments to your list. Why worry about it?
If a person likes observing and intends to keep doing it, a scope or two
invariably gets added to the pile of stuff. When guests come to observe, a lot of observers pull out
their old scopes but keep close tabs on their newer and better one. The message I have is this: if you like observing, your tool set
will expand and your old "stuff" will probably stay around. Assume this and you will size your
storage better. So make appropriate notes on your original list and continue.
b.
House storage.
House storage is great if your chosen observing site is close to your
house and you have available space.
This is where communication among the house members becomes critical,
because in the end, if you cannot protect your equipment properly and have it
reasonably organized, then your "inside" home storage solution will probably
not work well. From experience and
observation, a couple decent scopes and stuff that goes with it will take a
half of a normal bedroom. In
addition, for room storage to work well, the room needs to be where you can get
your equipment outside to the observing site without making 20 turns in the
dark with your hands full. A closet is OK if you have a very limited tool set.
Whatever you choose (if it is in the house), it will need to have easy access
to the outside but still be bump proof and people proof when it is not in use.
Parts of garages (that I observe are typically rarely filled with cars) work
great IF you can delineate a protected space. I have seen many garages, so please don't mix mechanical,
lawn, and children's toy areas with scopes unless you protect the scope area
and have a way to get through the maze to the outside site. Don't put scope
stuff where fumes from corrosive things (paints, solvents, fertilizers, etc.)
abound. This may seem obvious; but sometimes the obvious escapes us.
c.
Shed Storage. I
make no "bones" about it-I really like and have built separate storage for our
equipment. We outgrew our "inside"
home solution in two years. However,
there are some things to consider that are critical. Shed storage must be sealed to the outside to prevent
various rodent do-do and nesting from encroaching on your favorite scope and
star stuff. Second, small little sheds that you can buy are NOT suitable
without modification because they will not usually take heavy use and they
(being small and un-insulated) will expose your equipment to dramatic rapid changes
in temperature every day. While you do not need to climate control (with active
heating and cooling) your storage, you do want to reasonably thermally
stabilize the storage. This means
some insulation (even a little) is a really good idea. Third, entrance and exit paths to/from
a shed MUST be able to give you the width and height of your widest and tallest
equipment PLUS several inches-if you want to build some safety and ease of use
into your storage. For instance, if you have a storage entrance that has a door
that is
6 inches less than your height, I can almost guarantee that one evening
either you or your scope or both will collide with the entrance. With these
things in mind, sheds can vary greatly in size and type of construction. Some
may be cute and have very attractive price tags, but they may not work in the
dark with your expensive
equipment. A homemade shed can
possibly be connected to your house BUT local building ordinances usually won't
tolerate something connected to your house without having a LOT to say about
how it is built. Separated, specially designed storage with good entrance/exit
features that is reasonably sized is usually the only solution to meet building
code restrictions-unless money and complexity are not limiting factors in your
planning.
d.
Size & Type of Storage. Whether your storage is in the house or in a separate shed,
try not to make the classic and often repeated mistake of planning to use
something that barely fits your estimated tool set (current set and forecasted
changes/additions). Guidelines are hard to give because people's astronomy
equipment varies and what they think they need for the future varies even more. If it was me making the recommendations,
this is what I would use as a suggested guide for minimum storage for a defined
tool set:
i. One
small SCT/Mak/Dob plus 3 cases of equipment-at least one big closet or 1/3 of a
room or 6'x6' shed
ii. 2
small scopes plus equipment: about the same plus another 50% floor space
iii. 3
scopes (including one good size SCT or a Dob)-at least an 8'x10' area that has
stud-height walls (a little less than 8 feet) and standard exit/entrance doors.
e.
Combining Storage with Observing Site. This is a relatively popular solution
and results in a roll-on/roll-off star shed. There are wonderful examples on the web of folks that have
done this. If you are cramped for
space, you only use one or two scopes, and you do not have many people observing
with you, then this is a very viable solution. I examined many such designs but our requirements, our
weather (often damp, some times hot, sometimes cold), and my local high density
of critters/insects meant that I would have to have a perfectly sealed design
that was big. For us, this
solution did not work and was not attractive, unless the cost was much higher
and we would only use the shed for one thing-astronomy with a very small group.
However, for readers that want to pursue this solution, there are many examples
available and some "posts" on the subject.
f.
Local Ordinance Considerations. Most counties and towns have
pretty elaborate building restrictions for anything connected to a house or
above a certain size. Hence, for
either option one usually needs a contractor, a change in plat, formal plans,
etc. It is a great solution where
money is not an issue, which means it is not a good solution for most people.
However, the really good news is that most local codes and ordinances permit single-story
sheds to be built or placed on your property if the square footage is
reasonable. For my area, the local
code limiting size for a shed is 150 square feet or less, which is a very
generous sized room-slightly larger than 12'x12'. I have heard of areas where the size is 100 square feet,
which is still a generous room (10'x10').
In almost all cases, the height is not restricted by codes as long as
the shed is single story. Hence,
you can have built or purchase or build yourself a shed that has decent height (to
avoid endangering your cranium as you wander in and out in the dark) and plenty
space to store stuff. Also, local
ordinances that I am familiar with (please check yours to make sure) do not
specify the type or manner of construction for a
shed. (A "shed" means that you do not live in it-it is
not your abode for overnight sleeping.
The fact that you might use it during night hours for observing still
means that it is a shed. This
distinction is VERY important in regard to local ordinance limits.) This means
if a person is just a little bit handy and can read a Lowes or Home Depot
how-to book on garages or sheds, then something can be built that will not fall
down AND will not upset your local code restrictions. Where the local codes ARE
restrictive is with respect to the placement of the shed relative to your
property boundaries. Set-backs (distances to boundaries and your home MUST be
obeyed. It is typical to not be permitted
to place a shed within several feet of a boundary, but check your local code restrictions
for the particulars. Fees and drawing requirements for sheds are usually
inexpensive and simple, respectively.
I submitted a sketched shed location on a regular plat and the fee
was $20 in 2005 for a small building that has no heat or electricity or water. For this type of project, an
inspector comes out to check to make sure the location obeys the local set
backs (minimum distances to boundaries) and checks after everything is done to
make sure the building was put where it was approved to be placed. The
inspector did not care if the building was concrete, steel, wood, or an odd
looking dome. I have power/electric requirements, but I use an extension cord
to get the power that I need to our star shed. I have bath/bed requirements,
but they are handled by having the site near my home.
g.
Neighborhood Association Restrictions. I aimed to have a home that did not
have such constraints because I heard plenty of horror stories ?well before I
was observing the stars. However,
many people have to deal with a second set of rules from this kind of an
association. As in the case for
county or village code restrictions, one must find out what the rules are. I understand, however, that sheds that
are decently built and do not look like a dump are usually acceptable up to a
certain size. The good news is that an attractive shed that is multipurpose and
set near an observing pad but not far from your house can actually be quite
attractive. Hence, objections from picky neighbors (if they have a say in the
matter) can be lessened. In any
case, there is no short cut: you
must find out what the limitations are before digging or building.
Our storage solution (see previous figure 4)
was a home built shed. I priced,
and priced, and priced sheds of various sizes and shapes. For us, by the time I found candidates
with an entrance that was high and big enough, the price tag (with no
insulation, small inoperable windows and no floor) was already outrageous and
the construction was very light. I
talked with some friends about building since I had never framed anything but
could handle a hammer. I bought a
Lowe's guide on garages, copied some basic details on wall construction, and
set out to build the maximum sized shed the local county would consider a
shed: 12 feet squared. However, I made it full height (using
regular studs) and made a simple peaked roof that would permit the inside
height to be about 12 feet in the center.
Then my wife and I figured where things would go and designed internal
storage. During a couple months
prior to starting construction we found and purchased returned or slightly
damaged windows at Lowe's (nearly all stores do this at one time or another). We bought a regular 6 foot French door
for the only entrance/exit so we could actually sit in the door of the shed and
observe or use the generous opening to ease getting things in and out. I kept
construction simple and straight forward-copying stuff from my handy Lowe's
guide when I needed it. The total
cost was less than 8x8 prefab and built ten times better, but we will talk
about building later.
2.
The Observation Pad or Site.
a.
The Range of Solutions. The range of solutions is quite wide
but each solution has the same elements:
size, shape, surface, and access.
The location (in review of what we have already covered in the article)
has already been chosen. Your sky
limits and general light conditions have been recorded. You know and have listed your tool set
(star stuff). You have chosen your type of storage. The question at hand becomes the type of observing pad or
site you want to have-grass, concrete, wood deck, dirt, boundaries (if
desired), elevation (ground level or raised), and decorative or practical
touches that make you want to use it. The choices are endless and depend a lot
on people's experience. I will
admit up front that I have a bias toward certain things-a site that is
reasonably level with the ground and a concrete construction. I try as much as possible to adhere to
the KISS (Keep It Simple Stupid) principle. The reader might as well know this up front because I do not
want to discourage other solutions, but I know what has worked for us and the
pitfalls we found in other materials. If you already have a deck area or a
patio (even a small one), then you may only have to make some adjustments. In any case, I will present some ideas
(if you have not made any choices yet) so that you understand why my wife and I
did what we did. Our approach and
our ideas:
i. Why
level with the ground? It means
the least amount of work if leveling must done; it requires no railing so
people don't fall off something; it means the surrounding yard becomes the
overflow area with no steps. The pad does not have to be perfectly level since
a little slant or slope keeps water moving nicely and blends better with the
typical non-level yard. My recommendation: work as much as possible with the
land slant that you have and minimize the digging. Putting small shims under a tripod leg or EQ platform or
ground board foot is easy compared to striving for a perfectly level site. A
few inches of slant or drop for every 8 feet is easily workable but still
appears nearly level.
ii. Why
concrete? Brick sweats (it really
does!!) and dew loves to form on brick, which makes it slippery. Wood decks usually mean a raised area,
which works IF the wood deck is
very stiff and virtually solid (no big
gaps). If raised, it must have railings and/or steps to the ground. The cost
can be high. A wood deck solution gets real touchy if it flexes, vibrates, or
sags with weight-these things give sensitive scopes (especially SCTs) a
fit. It requires maintenance every
other year or so. On the natural side, a grass site is pristine and romantic at
times, but it gathers dew in a heartbeat or frost in the same time. If observing time is extended, grass
gets very cold quickly-soaking cases and anything else that touches it. Bare ground is OK if there is no dust
or loose dirt to contend with. Neither dirt nor grass can stand regular use in
my neck of the woods without creating a mess. Remember the poll results: the average person uses the pad 25-50 times per year. In terms of longer term use, each of
these solutions demands some upkeep and attention except for concrete. I am personally partial to doing the
least amount of work and maintenance that I can.
With all of this said, concrete was our choice. The good news about concrete is manifold. First, you don't have to be a rocket
scientist or a builder to make forms and work concrete. Instructions are on every bag if you
need guidance. Second, it is
virtually maintenance free if you make it thick enough (thickness of a 2x4 or
about 3.5 inches thick) and put rebar or iron rods in it to keep it from
cracking. Third and last, it has attractive
properties with respect to sitting telescopes on it. Property 1: Concrete heats slowly and cools slowly so
evening observing is on a surface that is nearly always slightly warmer than
air in the evening but resists rapid changes. In technical terms, it has thermal mass and, therefore,
makes a relatively stable surface in terms of temperature-nearly always a few
degrees above ambient. Hence,
unsealed concrete rarely collects dew through most of a night and, if it does,
the surface absorbs it, because concrete is somewhat porous. Property 2: it can be easily designed
for any shape and type of surface. The surface can be made to your liking
(smooth, brushed, etc.). I
recommend a swept or brushed surface to avoid slipping and to keep tripods from
moving easily. I also recommend
natural concrete or, in other words, DO NOT put a sealer on it. (When you seal
it, the slightest moisture will collect on the sealed surface, which is NOT
what you want.)
b.
Size and Location Considerations. With a shed or house storage
in already chosen and your general site already selected, the size and exact
location of the pad must be determined.
This is where your list of stuff that you expect to use during an
observing period must be consulted.
The area does not have to be solid!! One can have several selected locations for scopes and build
a small deck or slab for each.
Several circles or multi-sided shapes can be used for this. Or, the area can be solid with enough
area to set up everything you want.
If you expect to have more than one scope in operation at the same time,
I recommend thinking about locating and shaping the area so each observer can
see the others, which makes communication and running between scopes the
easiest (least hazardous). Figure 7 (next page) shows
several pad concepts. Of course, when we are talking about one scope and one
person, everything is much simpler.
In all shapes, however, the location relative to your star stuff storage
and the house (for conveniences) IS important. Keep this in mind. A little thought into how you orient your
observing pad really helps when it is dark and duty calls (to gain water or get
rid of it). Ultimately, as a rule of thumb, take your diameter of the physical
movement for your telescope and add about 2 feet. This defines the outside border for the adjacent or next
scope area or the nearest physical obstruction (table, brick wall, plant line,
etc.). The extra 2 feet permits human passage and operator movement around the
scope without running into the next scope. Depending on the number of scopes you want to set on the
pad, plan a little leeway for entrance/exit to/from the observing area without
getting in the way of an observer.
If you add the dimensions up, you can get a rough idea for how big the
whole observing area will be and how much ground area around the pad might get
used also. Before digging and
after you are pretty sure how you want your pad to look, it is wise to stand in
the locations one clear night where scopes are likely to be placed. This can give you a sanity check about
the sky that is available from reasonable points on the pad. Make sure key stars (like Polaris for
us) can be seen.
Figure
7
c.
The Concrete Pad-Our Arrangement. Figure 4
diagram 5 shows our final arrangement for shed
storage and the adjacent telescope pad.
These scanned photographs have notes for dimensions, why we did certain
things, and details about access. Site preparation time is a lot longer than
actually doing the concrete pouring/finishing. For our home, the larger part of
the pad and access that was constructed of concrete was ordered and delivered
via a concrete truck. We did the
work to smooth surfaces. As a matter of reference, for pads that need over a
cubic yard of concrete, the net cost for it to be delivered to your home on the
eastern seaboard of the US in a ready-to-pour fashion is about the same as
buying "ready mix" bags that you mix yourself. As a result, we had the largest part of our primary pad poured
but relied on mixing it ourselves for the center "triangle" because we wanted
to do it later and with a color.
(The color triangle orients us or visitors to Polaris if clouds keep us
from seeing our "guide" star.) If you have never done this sort of thing
before, it is not hard to learn by doing some bags yourself in a smaller
area. We divided our area into
sections and used pressure-treated wood as the internal borders between
sections. This means we did not
move the forms that were inside the outer edge for most of the slab. Our slab is nearly level but has a bit
of slope where needed to get rid of water. Since it is at ground level, mowing and setting up just off
the slab are easily done. In short, this way of constructing a slab has proven
itself to us. If you have never
tried it, don't be afraid to try it.
One can almost always find a friend with a little experience to assist
in this process if it seems too complicated.
d.
Our Previous Pads ? a not-bad solution (previous figure 3). If this all seems to much work and you have
a concrete pad next to your home or you are willing to install one, figure 3
shows our north and south facing pads that we built first and still use under
certain conditions. The reason I mention these again is that some people shy
away from the most obvious and quickest solution (next their house) because
they think the house will interfere or yield too much heat off the roof. For normal sized scopes (less than
12-14 inches), we have not noticed where home light or heat significantly
deteriorates viewing. Furthermore,
these types of pads use the house as a wonderful light baffle that the owner
controls. Each of our next-to-house pads was placed to take advantage of
southern or northern exposure; each location permitted viewing a reasonable
segment of the sky. For a single scope and few people observing, this is very
adequate. However, the number of scopes we use and the people that keep coming
to observe required more dedicated storage and a larger area. Nevertheless,
each of these pads is still very usable.
With proper light baffling, they are good site design for a typical residential
house-even in a dense housing area. If second story structures are less than 50
feet away, this kind of house-connected slab will still provide very reasonable
sky viewing potential.
3.
Light Baffling-Choices Focused on 3-5 Years Away
a.
House as a Baffle.
If you go back to your planisphere, you should be able to see your
measurements for available sky.
For any pads and shed storage near your home, the house (and sometimes
the star shed) can act as a primary light baffle. There is some practical wisdom in using your own home as a
light baffle because you control the light that comes through the windows. So, take advantage of it! One of our
primary reasons for locating our latest pad on the north side of our home (see previous figure 4) is because it baffled car
lights and any other light for a large wedge of southern compass
directions. The same holds true
for sheds, solid fences, etc. If
any objects are located fairly close, the benefits for light baffling often far
outweigh their blocking some of the sky.
Our house and sheds baffle nearly 90 degrees of light sources while
their "protrusion" into the sky was less than one hand width or about 25
degrees (see previous figure 6).
b.
Natural Baffles. Most
folks live in homes where the property was leveled by the developer/builder.
Whether the land is level or not, using mounded earth or some terraced area or
natural topography to assist in light baffling nearly always works. Compared to a lot of expenses, a load
of dirt or earthen garden wall of some sort is relatively cheap-and
reconstitutes the typical developer's approach to level every square foot of
terrain. Consider an example. Let
us say that you have 75 feet from your observing site to the neighbor's yard
and lights. If your load of dirt
gives you a two foot high and a 20 foot-long gently mounded area that is a
little way from the boundary of your site AND you plant a row of fast growing
evergreen trees or shrubs on top of it, then you will have a solid (with
respect to light) barrier that reaches at least 6 feet in less than three
years. It is virtually maintenance
free; it can be trimmed to suit, and it provides shade in the late afternoon or
early morning. This example is just to get the reader thinking-there are many
ways to make a natural light baffle that also beautifies your area and provides
shade and privacy. Compared to most artificial baffles, natural light baffles
(barriers) are the least expensive and require the least maintenance in the
long haul. Figure 8 (top) shows our recently planted
line of Leeland Cyprus, which will completely block the light from two
neighboring homes in about 4 years. If the same tree line was 25 feet from my
observing site and 50 feet long (about 5 trees), after 5 years of tree growth
the line it would block light from a two story building that is less than 100
feet away. It would also cover an
angle of over 120 degrees (1/3 of all compass directions). The trees (2007
spring prices at a large retailer) were less than $100-including a couple 50
pound bags of planting soil.
Figure 8 follows
c.
Artificial Baffles. Correctly placed temporary and artificial
barriers are relatively easily constructed, removable, and can lay or stand
flat during storage periods. There
are products that are available on the market but they are a bit pricey. If you don't want to spend that kind of
money, then a little handy work with heavy duck cloth or tarps and PVC pipe can
result in a home-built variety. Pretty ones with wood or plastic products are
more expensive, but they can also be nice as movable barriers for other
purposes. In most cases, the
height of artificial baffles only needs to be just above average height of a
person to provide enough light baffling for neighboring light interference. If
an owner already has a deck or a fence line, making an extension or panels to
provide more height and solidity is sometimes a simple solution. In all cases, light baffling need only
cover the compass directions where light is notoriously bright and is not in
your control. A fully enclosed
area is rarely needed.
d.
Temporary Baffles. There are two quick light baffle
arrangements for handling light interference that comes from high or second
story lights or pole lights. Most people have the elements to them but don't
realize it: step ladders and tarps.
If you have a step ladder, go to any discount office store and get a
couple packages of black foam board (6 or 8 sheets where each sheet is 2 feet by
4 feet). Go to a large have-everything store and get a couple sets of plastic
clamps (the kind that will open to 3 inches or so and take one strong hand to
open). Set your ladder between
your observing position and the offending lights. Clamp as many sheets as you need to the ladder and you have
built yourself a temporary light baffling wall that is cheap and quick to move.
(See previous figure 8 bottom
for our example.) I use the same arrangement to remove moon glow on high moon
nights when employing an astro-video camera, which can be sensitive to moon
light-especially if it is reflecting off broken clouds and haze. For an even
simpler cheaper solution, consider a tarp (figure 9,
next page). Oh the wonders
of a tarp! In a pinch, I always
have a couple along with some strong plastic clamps. 50 feet of rope, a few tent stakes, the tarps and clamps are
the elements of a temporary baffle system. Of course, there are some wind limitations, but windy nights
are not the favorite times for observing anyway. If you are concerned about light wind, then stake the
ladder-based baffle to the ground by using a couple tent stakes and a rope that
is tightened over the bottom rung of the ladder. If you have tarp baffle, you
can clamp wood slats to the bottom with clamps for light wind conditions (see figure 8 bottom). All of this gear is inexpensive
and can disappear into typical house storage when it is not in use.
4.
Access to/from Storage and the Site. Access to get people to and from your site gets very
important so that you can do it in the dark and visitors come/go without
tripping over your stuff. It only
takes a ribbon of concrete or brick or a line of bushes, etc. to encourage the
route you want to see used. Think
about this ahead of time and it can save an accident later. I placed my storage
area so my star stuff always comes out and goes away in a direction that people
are not going (see figure 7 lower left and figure 4 top). But there is another reason for having
a defined access route and good connection to a storage area: weather. If you live in mid latitudes or further toward the poles, snow
and ice can be a terrible detractor from observing, especially since they seem
to occur just before a few clear nights (after the front passes). So, if you make your access deliberate
and it connects nicely to your paved sites, you can clear them quickly after
the offending precipitation. This
is another advantage to a concrete slab. If you clear it promptly after a snow
or ice storm, it will dutifully collect sun rays and dry itself in preparation
for your observing session the next couple of nights. Grass and dirt are not as
cooperative.
Figure
9 follows
THE WORK STEP
SUGGESTIONS-WHAT TO DO FIRST, WHY, AND HOW
A.
Which Comes First-Pad or Storage? I do not like wasted clear
nights where the weather is great for observing but I cannot set up. This means that refining your home
observation area has to be orchestrated to minimize disruption to normal
observing. My wife, of course,
thoroughly approves of any construction method that reduces the mess. For me, this meant building my storage
first and living with a grass observing site for a couple months until I could
complete the observing pad during free weekend time. This worked for us because
our star stuff was stored in the house as the storage was being
constructed. Then we shifted the
storage to the new shed, continued observing on nearby grass, and began the pad
construction. We simply
constructed a board walk to a nearby grassy area while the pad was still being
completed. It is one of those
decisions one has to think about. Avoid doing everything at once since you may
find there is neither storage nor observing site available for a few
months. Such a condition causes
photon starvation, which is not good for the soul that hungers to see the sky.
B.
Storage Construction Considerations. When you build your storage (separated, in the house, or in
a garage), size your cubicles or volumes for internal storage based on the
largest pieces of your gear. A
common mistake is to make dimensions too tight. Remember that you have to get your hand up and over or
beside your star stuff to get it out and in. If possible, get stuff off the
floor. Things on the floor get
kicked in the dark, which is OK if it is a tough padded case, but is not OK if
it is a sensitive mount. If you think you will need 3 shelves that are 2 feet
long and 18 inches deep, then double your estimates. If you think you need one tall storage area for your single
tripod and one upright pelican case, then put in two sections for tall storage. The message is simple: nearly everyone estimates storage far
short of their needs a few years down the road. If you have room, build lots of storage or buy/make extra
racks. In all cases, keep stuff
clear of the door through which all of the star stuff will go out and come in.
If you want to keep your building time to a minimum, then get the shell of
separated storage building up (including the floor) so that is is closable and
sealable. If you are not picky about the insides, then start using is right
away and worry about finishing inside storage later. Some simple racks,
hammered together with some OSB and studs will do just fine until you decide to
finish things. This approach gets the observer using the storage and
establishing a system of what goes where. The experience of a few observing
nights will help refine your ideas about what you want to do in a more
permanent way.
C.
Pad Construction Considerations. Pad construction does not
have to make your yard look like a total wreck but some mess is
unavoidable. Pad construction is work,
but with your shape and size and location chosen, the execution of the task is
not complex. If your storage is adjacent to your pad like ours, then pad
construction can make getting things in and out of your storage a little hard. If you are like me and want to keep using
your storage during the pad construction period, then get a couple extra sheets
of 1ž2 inch OSB and a few 2x4s to make your self a make-shift walk across
your construction to get your star stuff out while work continues. Then you can
continue to observe a little more easily while you pursue the construction of
your concrete pad. If you have
never done concrete work before, it is the preparation before mixing and pouring
concrete that seems to take forever.
Don't be dismayed if the site preparation and concrete form work take a
little time. Mixing and pouring, while demanding some sweat, goes much faster
than the initial site preparation time.
Here are some construction reminders for a concrete pad construction that
are important:
1.
For anything larger than a single scope pad, I recommend
sectioning your area. This does
two things: it makes mixing and pouring do-able in smaller sections when you
want it and it keeps vibrations through the slab localized. Sectioning is easy
with pressure treated wood, which you can leave in place. And, these wood pieces also act as your
guide for leveling and finishing.
2.
Put rebar or metal pieces in your sections to reduce or
eliminate cracking. You do not
need a lot but a single piece laid a foot or so from the boundaries of your
section and cross pieces every 3 feet or so help immensely. You will appreciate the effort the
first time you clunk something really heavy on the section or a car backs up
and snags a corner. You don't want cracks to develop from those events.
3.
Don't go less than 3 inches thick. I have learned the hard way that skimping in thickness does
not help. Ideally, keep your
sections at least the thickness of a 2x4 (3.5 inches). With this thickness, it
won't matter if you bang heavy tripods, load people up, or run over it with a
little car.
4.
Details for floating, finishing, etc. are in most little
guides you can buy at a hardware store. Lowes, etc. They give you good pointers and pictures that help if you
feel lost. If you have never done this before, read them before you receive
your first concrete or start mixing yourself. When the concrete has set up such
that it can be brushed with a broom so it marks the concrete in a shallow way,
then we highly recommend "brooming" it so the surface is not real smooth.
5.
I highly recommend putting a line in your concrete or using a
separate form (like a diamond shape) so you have a visible reference to
celestial north. This means
sighting Polaris during the set up period (ahead of time). During the forming process you can
stake the celestial north-south line with stakes outside your pad. When you
pour your concrete, take a 1ž4 inch rope and simply draw it tight between the
same stakes and carefully press it into the concrete when it is mostly set up
and then lift it out. Or you can be fancier like we did and lay a diamond of concrete
in your pad that indicates celestial north (see
previous figures 3 and 4). You might be surprised at how many times
these marks or lines have proven helpful as we have set up on our own pad.
D.
Access to/from the Bed and Bath. Many folks seem to like sites far away from homes, but if
you are following our reasoning and want the conveniences close, then keep in
mind where the closest bed and bath is located near your site. The bath location needs marking in this
sense: you want to encourage
people to take one path to and from the facilities because it is dark. You want
to minimize accidents and stray light but maximize convenience-especially when
duty calls for your visiting children.
So, make the path you want them to take-the sidewalk, grass with marker
low intensity marker lights, a ribbon, anything to keep them where you want
them to be so you do not have to be concerned. As for bed, it may seem mundane,
but knowing your path to bed when tired is ever-so helpful. Again, we have
found 5-10 candidate little red or blue lights or such so we put up
automatically inside our house and outside when we observe. It is helpful for
visitors but especially helpful for us during our last trips toward the bed.
E.
Power and Light Considerations. Local inspectors get picky when you have built electricity
into your site. But you do not have to do that if your site is within 150 feet
of your house, which is the standard maximum length of an extension cord. Want electricity within your observing
shed like we do? Then let your extension cord be fed through a piece of PVC
pipe that is mounted in the observing shed wall. Inside our shed, the end of the cord goes to a 15 amp power
bar. The results of this option are
as follows: more than enough power to run scopes and associated equipment with
little converters to DC, no critters can get in/out of the observing storage,
and there is enough reserve power to run a tiny heater and a light or two for
winter observing convenience.
REFINEMENTS AND
LESSONS LEARNED
Wish We Had Done It Sooner! While
it took about a year for us to work on our site and observing shed, it was
during full time work and a normal busy life. So I believe the task is
achievable for most people. Our
observing periods greatly increased, our daytime use of the area became
popular, and we have "beautified" an otherwise plain area. Most friends without
observatories still operate from the same unimproved sites, and I think that is
what most people do. But our experience tells us that the improvements were
well worth the time because of our changes in observing habits. I think most people will find that
improvements pay off. So, why wait
to do it? If we had to do it over
again, we would have done it sooner.
Make Your Pad Big Enough!! While I
have mentioned this numerous times, please note figure
10 on the next page observing setups on two of our pads. The smaller pad
is busy with equipment but very usable for one or two people with one
scope. If it is desirable to have
everything on the concrete, however, it is cramped for multiple scopes and
groups of people. Hence, the
bottom picture shows our setup for two scopes on a larger pad. It is suitable for 3-4 people and we
have room to seat more company adjacent to the concrete pad.
If you have a choice to make
something larger, do it!! You will
not regret it and the increase in cost is not significant compared to the
increase in use that a larger sized pad will permit.
Head Room and Elbow Room-Estimate
on the High Side. For the height and
internal volume of your observing equipment shed, it is worth over-emphasis on
my part to the person who is anticipating refining it: estimate on the high
side! You will not regret having
the extra high clearance in your star shed and the extra inches of room in your
internal storage.
Internal Storage-An Issue In Itself
Inside the Shed. Internal storage
in houses, usually designed by developers rather than people who are thinking
about how much space they need, are usually poorly or scantily constructed.
Please do not make the same mistake with astronomical storage inside your chosen
or built storage area. With all the effort to make a shed or part of a garage
or a room suitable for your scopes and stuff, give yourself as much space as
possible and try to organize it.
It will pay many dividends if you think about this and design/build
accordingly. In translation to actual size, if your case has a certain
dimension, your storage should permit an open hand to go over it or beside it
to retrieve it from a shelf. If multiple cases go on the same shelf (like
ours), then gear the dimensions toward the largest case you might put there-not
the smallest!! Remember that the movement of equipment almost always occurs in
the dark.
ADDENDUM TOPICS
The Mobile Observing Site-A Subset. We rarely travel without a telescope
kit. Part of our planning for our
home site was to package our stuff into the right size crates so we were ready
to roll somewhere else when we wanted to.
As a result, we took some time to think things through ahead of
time. What do we really need? Which scopes and EPs and equipment do
we take? What cars are we
taking? All of this filters down
to pre-packaging our equipment. So
when we set up on our home observing site, we are actually pulling out a couple
travel kits worth of stuff. When
we travel, we are simply taking part of the home kit
but everything is in
the same containers we use at home. This may seem simple, but it took
several months and a couple failed pluck-foam pieces to finally get this down
right. Now, however, I rarely have
to think about what to grab and when.
I know where it is in my home observing shed and I know what is in every
box in the dark. Believe me: it
pays to establish a system and portable storage if you want to observe away
from home also. A couple of things
we have found helpful follow:
1.
Except for scopes, some storage boxes get unwieldy if they are
too heavy or big. Our largest box
(metal with foam) carries critical optical equipment but it weighs no more than
15-20 pounds. Others are smaller.
2.
Group your boxes by function. Optical equipment (described above) is just that; we have
separate boxes for solar things, astro-video things, and accessories.
3.
An all-in-one box for a small scope plus the tripod is very
helpful. In a pinch, this box has saved us many times when we needed a scope or
needed to go in a hurry. It is
worth the cost to get a case made for a scope PLUS what you need with it IF the
total weight is well within your lifting ability. It follows that having a
known and assigned storage location in your home observing arrangement is part
of the solution.
4.
We store our boxes in our storage shed in ways to make it easy
to grab and go. With a completely
enclosed and reasonably insulated shed (which we HIGHLY recommend), internal
doors are
not used. Rather, shelves and vertical spaces are
open and easily accessed in the dark.
Suburban Observing Sites-Special Problems and Solutions. As I have talked with suburban and town
dwellers, the problems of available sky and light pollution are more
acute. However, I have also read
about and observed some unique solutions.
If you are one of these people lament the absence of a yard, do not give
up yet!! Do you have a second or
third story window with a decent view of part of the sky? Do you have a small porch-the famous
kind that developers often add to the back of condos that are virtually
useless? In either case, you may
have a critical element for a small observing "pad". Using the planisphere method for recording your available
sky, you may find that you have a decent piece of the sky that you can observe from
a small porch or window. Those
"useless" small porches are often connected to a large sliding glass doors. Judicious
changes to a small porch or a change in windows (to one that has a large
removable section at tripod height to a couple feet higher) may provide you
much needed relief from photon starvation and permit the use of a small/medium
refractor or SCT-even in a multi-storied condo! On these types of locations,
light baffling the most annoying sources (not including sky glow) is usually
easier to achieve than a full scale yard sight that can be seen by everyone.
Most housing construction does not have excessive vibrations from floor/house
movement that seriously disrupt viewing from a medium or small sized scope. Hence, even second or third story
observing is quite do-able. If a
window does have to be changed, the investment of one double-paned window where
a major section can be removed is relatively small if you are going to observe
on a regular basis! For the person
with a very small yard that is sandwiched among multi-story dwellings, also don't
despair until you select a couple sites and go through mapping your available
sky. Many people are surprised at
what the possibilities are if they think the problem through. Remember: the
typical observer at home is at home because of convenience. So if you can work through your
apparent limitations, you may be very satisfied for a large portion of your
observing.
A Change in Tool Set to Handle High Sky-Glow. If a person goes to the trouble of
refining a home observation site that has considerable sky glow, then a change
in tool set might go hand-in-hand with the refinement. Sky glow is a big detractor for a large
fraction of people, but remember that sky glow is a relatively even and steady
background. In technical terms,
this has a solution that is a lot cheaper than buying several inches of
aperture (a much larger scope).
New astro-video cameras and newer low-end astro-imaging cameras, because
of the manner in which they integrate or add frames of information, treat sky
glow as a level set of noise and permit seeing objects on an electronic output
without breaking a bank account.
Why mention this as part of refining a home observation site? Because a
typical residential observer in a town or city still wants to make the best of
use of available sky. In many cases, assisted-optics (as people call them) is a
method for mitigating the sky-glow injury inflicted on their available sky.
Besides, if a person refines a home condo porch or window for a thousand
dollars, for instance, then investing an additional thousand to get a tool that
will permit observing at home
(without traveling for hours to overcome the significant sky glow) is small
potatoes compared to time-consuming and other-location alternatives. The
suburban observer, with an astro video or astro imaging camera and a modest
sized scope, can do a lot that was not possible a decade ago-IF the home
observation site has also been refined.
The fact that he/she often owns a laptop and/or a high definition screen
makes the output to these devices "seeable". We would love to hear from people
that have practical solutions already working. I know they are out there.
On this last subject, we must admit a bias toward
astro-video. We are often in light polluted areas where some key stars can be
seen but that is about it. It does
not stop us any more!! We simply
take our astro-video camera and hook it to a modest go-to scope and view output
on a small high resolution black and white CRT monitor. Furthermore, the
solution permits us to entertain neighbors and children in the local
area-without having to drag them 2 hours into the country to a local star
party.
A CLOSING NOTE
As mentioned at the beginning of the article, the regularity
and prevalence of home observation tells us that a large fraction of home
observers have much to gain by refining their home sites for observing. Whether
one uses our recommendations or has other ideas, the improvements don't happen
without a plan and some work. We
encourage you to start. Have fun.
Post ideas. Post solutions that work. Post information on mistakes so others don't
make them. And whatever you do,
enjoy the improvements as you complete them by observing objects more easily
and often at home. Some observers
hold the opinion that amateur astronomy interest is waning. A key way to increase interest is for
the backbone of the cadre of observers-those at home-is to show results from
their observing where they live and where their neighbors live. The wonder of the heavens, reachable
from your backyard, will speak for itself.
Roland and Linda Beard
Crozet, Virginia USA
Psalm 19:1
About the authors: Roland and Linda Beard have only been
observing since 2000. They began with a plain C-8 and now work with a medium
Dob and a little C-5i. They observe about 30-50 times per year and half of
those times are with friends and newcomers. They especially enjoy astro-video
with a MallinCAM Hyper Color camera and sketching sky objects. Roland is
sort-of retired and never looked through a telescope until he was 50. Linda is
"blamed" for the hobby since she wanted a little scope in a local retail store
around the turn of the century. This led to a little research and the first
scope. They have never been quite the same since then. They can be contacted through CN and
would be glad to hear about your home observation improvements. Their email:
rolandandlinda@earthlink.net.
If you wish an electronic copy of this article or the
associated presentation, please contact them.