On Blocking Neighborhood Lights
Posted 15 September 2013 - 06:53 PM
HOWEVER, I have this interesting "slot" just west of the meridian which is reasonably dark. But it isn't very wide. Per my calculations and measurements, if I want to view M7 from my back yard I've got a roughly 30 minute window to find/observe it. See the attached pic and you'll get the picture (pun intended).
Posted 15 September 2013 - 10:19 PM
The short story is that it is six flag poles (three pairs) that support three tarps.
The twelve foot side is two 8' fence posts lashed to the top rail of my chain link fence. Each ten foot side is a pair of 10' 1" PVC pipes supported by (i.e sleeved into) a five feet tall, ten feet long free standing 1.25" PVC grid (picture a 5' x 10' rectangle with a tee at each corner). Each of the six "flag" poles is rigged just like a flag pole with an awning pulley at the top. The "flags" are a 12' x 10' tarp and a pair of 10' x 8' tarps. The fence posts I leave setup most of the time. The support grids I keep around back and move them into position and insert the "flag" poles on site. I've got a good view to the southeast but there is also a streetlight about 40' away in that direction. To keep light from shining down the OTA I needed something rather tall. I left the vertical joints unglued, but either glued or pinned with a screw (I gave up trying to get the tee at each end of the horizontal 10' sections to line up as the working time for the PVC cement was too short) all the horizontal joints, this allows the PVC "flag" pole holders to be broken down into a few component parts for storage or transport. On a ten foot pole there are three attachment points (aka cup hooks) at one foot intervals for the awning pulley. I can move the "flag" pole holders into position, insert the vertical poles, and have the "flags" up in something less than fifteen minutes. This turns out to be relatively easy as I was able to pull it off the first time without turning on a flashlight. Each of the two PVC assemblies is made from two 10' sections of 1" pipe, four 10' sections (2 x 10' horizontal, 2 x 5' vertical, 4 x 2' feet) of 1.25" pipe, six 1.25" tees, and four 1.25" caps (at the end of each foot). Each of the tarps has a small carabiner at the top corners, so they can be quickly clipped to a small loop at then end of the 0.25" hoist line and run up the pole. A couple of small bungee cords keep the tarp under control in a light breeze. My first try at a PVC set up was all 1" pipe, but 10 vertical feet of this pipe was just too flexible. Then I remembered or noticed that 1" pipe fits neatly inside 1.25" pipe and 1.25" tees, and hit on the idea of supporting half the length of a 1" pipe with a free standing 1.25" grid. I keep meaning to take pics and post to the ATM Forum but haven't yet. I suppose tomorrow I'll do so, now that I've written this post.
Posted 18 September 2013 - 10:02 AM
BTW, that's me EQ-G mount in the foreground, covered from the night before....
Posted 18 September 2013 - 11:10 AM
Posted 21 September 2013 - 08:27 PM
As the city just graciously provided me with FOUR, count'em FOUR new Street Lights (corner lot), the nice bright orangish-white light kind, I no longer have to worry about blocking lights....I just don't view from home now. Luckily, theres a state park just a 5min drive away with better views......but it has skeeters sometimes.
wouldn't it be nice if the city town asked the house they were going to add the light if they would like it or not first. Some house might like them,some might not, and it may just be a little move to make the majority happy.
Posted 21 September 2013 - 08:47 PM
The lawn ones are not really that bright but the holiday decoration ones are.
when we go on vacation I have observed on balconies with towels on all the rails my balcony light turned or screwed off or a bag over it. I observe from a lay down beach chair below the towels.
I have gone places where they had low street lights and I put paper bags on the close ones while I was observing.
I often use trees, bushes, my car to block out all or the brightest lights and pick my telescope seup site where the most lights are blocked out (and move my car appropriately for the final touch).
I have thought about mounting small signs/placards to bock out direct line of sight.
P.S. I am just glad I am able to convince my wife to not put up perminent lights in our yard. I do invite the neighbors to look, and they see the difference though the scope, and remember a few times later. If I plan to do alot of observing that night, I may ask my neighbors that sometimes observe with me to turn off their lights.
Posted 21 September 2013 - 10:23 PM
Looking at recent satellite maps of the area, there is a freeway running next to Eurovillas now and the area has expanded into the fields that used to be grape orchards across the road. It's probably so light-polluted that even if I popped the lights for six blocks in each direction, it wouldn't make any difference.
Posted 24 September 2013 - 08:18 AM
I'll trade you anytime. There are 19 new streetlights (those pretty coachlight style) and 5 older cobrahead style with 500 ft of my obs. I sicced the county streetlight guy on the developer, who of course is going to court. He won't win, the coachlights aren't on the approved list, & the County lighting ordinance doesn't allow any new streetlight within 500 ft opf an existing observatory. I been there of 15 yrs, he really should punt on 1st & goal.
Clear Dark Skies
Posted 24 September 2013 - 08:53 AM
Posted 25 September 2013 - 06:13 AM
I hear ya, I'm 15 miles outside of DC. The sky glows orange on the darkest winter nights. In the summer you can just about read the paper outside at midnight. I only need lights in my POD until I open the lid. The traffic signals & new streetlight are going to be a problem for all of us if they're LEDs. The HPSV, LPSV, & Mercury Vapor lights are filterable, LEDs aren't. LEDs are putting out a broadband spectrum that only eliminates the IR & UV ranges, the rest is emitted, & is right where we need to see. Wonderful news ain't it.
Clear Dark Skies
Posted 25 September 2013 - 12:07 PM
It is a social issue;people today feel that anyone objecting to full daytime light 24/7 are "strange".
Odd that in time of energy conservation "they" continue pushing ever more lights!
You really should be able to demand other people keep their light off your property.