Return to the Cloudy Nights Telescope Reviews home pageAstronomics discounts for Cloudy Nights members
· Get a Cloudy Nights T-Shirt · Submit a Review / Article

Click here if you are having trouble logging into the forums

Privacy Policy | Please read our Terms of Service | Signup and Troubleshooting FAQ | Problems? PM a Red or a Green Gu… uh, User

Equipment Discussions >> Observatories

Pages: 1 | 2 | 3 | 4 | (show all)
CMacD
super member


Reged: 01/23/12

Loc: Ontario, Canada
Clear nights per year
      #5577059 - 12/18/12 10:25 AM

Is there a database somewhere of the number of clear nights per year for North America? I have always heard that places like New Mexico and Arizona have higher probabilities for clear skies but have never seen a distribution map of the continent. One has to exist I would assume?

Post Extras: Print Post   Remind Me!   Notify Moderator  
vsteblina
sage


Reged: 11/05/07

Loc: Wenatchee, Washington
Re: Clear nights per year new [Re: CMacD]
      #5577125 - 12/18/12 11:13 AM

Years ago the mt.graham eis had a map. Some of the solar sites also have maps but they are daytime.

The best source in my opinion is the clear sky charts sponsored sites. They have the forecasts for night by month.

If your looking out west....remember that mountains change weather. So as little as thirty miles can be very different in terms of clear skies. This is really important in the northwest part of the us.


Post Extras: Print Post   Remind Me!   Notify Moderator  
CMacD
super member


Reged: 01/23/12

Loc: Ontario, Canada
Re: Clear nights per year new [Re: vsteblina]
      #5577150 - 12/18/12 11:26 AM

Quote:


The best source in my opinion is the clear sky charts sponsored sites. They have the forecasts for night by month.





Hi Vladimir, I like the clear sky charts also. They are a great resource and tend to be fairly accurate too. I am unaware of how they are organized by month though?


Post Extras: Print Post   Remind Me!   Notify Moderator  
CMacD
super member


Reged: 01/23/12

Loc: Ontario, Canada
Re: Clear nights per year new [Re: CMacD]
      #5577258 - 12/18/12 12:45 PM

Perhaps I should have mentioned that I am looking for a place to set up and park my mobile robotic observatory for the long haul. I figured I might as well find the best skies and drive it there. But I have been frustrated with the lack of historical data presented in a way that would help me make that determination. With all of the resources at our disposal these days via the internet I would have expected a google search to provide a wealth of knowledge. Sadly I didn't find very much. A few surveys have been published from professional sources in relation to their large observatory sites but other than that not very much exists. Or at least not to the general masses that I could find.

So I got to thinking... In the absence of finding any historical data why don't I use the resources at our disposal and reduce the data myself. So 3 weeks ago I began the task of grabbing an image at midnight, every day, of North America from the clear sky chart. I choose to grab the "seeing" map as it contains not only a close representation of the cloud cover expected but also the astronomical seeing associated with the forecast. I realize that it is not a "real" image of the cloud cover but it would suffice to prove the concept. Last night I generated a transparency from the NASA North America at night image to superimpose over that. Using Registax I added up the 19 images so far and contrast stretched it to reveal the best areas in North America over the last 3 weeks. Below is the result. (Am I allowed to post an image like this?) I hope so because words just don't cut it. I plan to keep grabbing them every night and generate weekly, monthly, and even yearly graphical representations of what skies are best over time. I suppose it would be possible to reduce the data based upon zones as a combination of the images only gives an average of what the conditions where. So an area that is only mediocre all the time would not look any different from one that has drastically variable skies for 50% of the time.

(Oh, by the way, the two cross hairs represent the Discovery Channel Telescope and the McDonald Observatory)

Comments, suggestions?



Post Extras: Print Post   Remind Me!   Notify Moderator  
1965healy
The Snarkster
*****

Reged: 06/23/07

Loc: San Antonio, TX
Re: Clear nights per year new [Re: CMacD]
      #5577678 - 12/18/12 06:04 PM

Looks like you need to mount your mobile robotic observatory on a raft in the Gulf of Mexico. Nice image and a whole lot of work!

Post Extras: Print Post   Remind Me!   Notify Moderator  
Tom Clark
professor emeritus
*****

Reged: 11/14/07

Loc: North of Deming, NM
Re: Clear nights per year new [Re: CMacD]
      #5577712 - 12/18/12 06:19 PM

Thanks for showing your map. It shows why we have had two cloudy nights in the last two months. Guess I picked the right spot! After living in FL for 40 years, I was tired of light pollution and clouds and humidity. I started a search for a dark sky with good seeing, and settled right in-between McDonald and the Discovery Telescope near Happy Jack. Check the first post in this thread and you can see links to our place. And there is room for 50 more astronomers.
http://www.cloudynights.com/ubbthreads/showflat.php/Cat/0/Number/5435774/page...


Post Extras: Print Post   Remind Me!   Notify Moderator  
CMacD
super member


Reged: 01/23/12

Loc: Ontario, Canada
Re: Clear nights per year new [Re: Tom Clark]
      #5578039 - 12/18/12 10:31 PM

Quote:

I was tired of light pollution and clouds and humidity. I started a search for a dark sky with good seeing, and settled right in-between McDonald and the Discovery Telescope near Happy Jack.




Hi Tom. I have really appreciated watching your new build over the last little while. I got a chance to read your thread on your search for your new home too. I appreciated all the travelling that was involved . You really got a chance to see the country while you were at it. Very nice. I was wondering what it would cost for something like my little 7 foot x 5 foot trailer to park somewhere for an extended period. There are a few trailer parks in the areas of the big observatories that store trailers there all year round for a fairly reasonable cost. They probably have insurance for the vehicles too so that may work out well. I guess I will need to phone around a fair bit when it gets to that stage. Unlike the search for a place to build a home I don't really need to erect anything or own the land just a little space and a reasonably clear horizon. Hopefully that will fall into place when I finally decide


Post Extras: Print Post   Remind Me!   Notify Moderator  
Tom Clark
professor emeritus
*****

Reged: 11/14/07

Loc: North of Deming, NM
Re: Clear nights per year new [Re: CMacD]
      #5578117 - 12/18/12 11:14 PM

Quote:

Perhaps I should have mentioned that I am looking for a place to set up and park my mobile robotic observatory for the long haul.




Costs? My guess is that there are many variables involved. You will need electrical connections and internet for a remote project. Most storage lots offer neither. Also, most storage lots do not offer insurance, and if you are able to find a land owner who is willing, they would not be willing to be responsible for your equipment. Good luck in your search.


Post Extras: Print Post   Remind Me!   Notify Moderator  
1965healy
The Snarkster
*****

Reged: 06/23/07

Loc: San Antonio, TX
Re: Clear nights per year new [Re: Tom Clark]
      #5578182 - 12/18/12 11:59 PM

Clark, are you in Ontario, Canada or Ontario, California? Difference of a couple thousand miles. What do you need beside a place to park? 110v power, Internet access, someone to check or trouble shoot your rig if it fails? Does your insurance cover your rig if you park it somewhere and something happens to it? Wind, rain, lightening strike, earthquake or heaven forbid vandals? Do you intend to pay someone something to allow you to use their property, rent or lease on a monthly or annual basis? Babysitting fee to check, monitor or trouble shoot problems with the rig. A power failure during rain or snow could be a disaster if the dome/roof failed to close. I suppose if you got a fault notice from the rig you could ask the property owner to toss/tie a tarp over it until you could get to the site. All things to consider. It would be ideal if some astro geek with a home in the middle of dark skies was feeling altruistic and volunteered to let you setup there and could take care of it for you. It may or may not be a reality. Best to explore all the options. Answering some of my questions may help others to assist you in your search.

Post Extras: Print Post   Remind Me!   Notify Moderator  
gravitino
sage
*****

Reged: 04/28/09

Loc: Evanston, IL
Re: Clear nights per year new [Re: CMacD]
      #5578324 - 12/19/12 02:42 AM

Quote:

Is there a database somewhere of the number of clear nights per year for North America? I have always heard that places like New Mexico and Arizona have higher probabilities for clear skies but have never seen a distribution map of the continent. One has to exist I would assume?




Hi Clark,

I can get historical data for most "major" locations from

http://weatherspark.com/

It is a fun site to play around with; for the info you are after you'll probably want the "Averages" or "History" link.

Clear skies,
-- Shane


Post Extras: Print Post   Remind Me!   Notify Moderator  
Al8236
Pooh-Bah
*****

Reged: 08/18/10

Loc: 48.9173N 122.1390W
Re: Clear nights per year new [Re: gravitino]
      #5578344 - 12/19/12 03:35 AM

Perhaps this is what you are looking for!
http://www.ncdc.noaa.gov/oa/climate/online/ccd/cldy.html
Or this!
http://www.currentresults.com/Weather/US/average-annual-state-sunshine.php


Post Extras: Print Post   Remind Me!   Notify Moderator  
Tom Clark
professor emeritus
*****

Reged: 11/14/07

Loc: North of Deming, NM
Re: Clear nights per year new [Re: Al8236]
      #5578569 - 12/19/12 08:44 AM Attachment (31 downloads)

Clark,

Check out Rancho Hidalgo. It might just be what you are looking for. Sorry I didn't think of it earlier. We drove past it the other day while visiting friends at the Arizona Sky Village. It is an inexpensive way to have a remote observatory. There are already many there.


Post Extras: Print Post   Remind Me!   Notify Moderator  
CMacD
super member


Reged: 01/23/12

Loc: Ontario, Canada
Re: Clear nights per year new [Re: 1965healy]
      #5578589 - 12/19/12 09:05 AM

Quote:

Clark, are you in Ontario, Canada or Ontario, California?



Canada

Quote:

What do you need beside a place to park?

110v power?



No

Quote:

Internet access?



Yes. I live in the country now and have a internet hub (wireless that uses a SIM card)I was hoping to get something like that.

Quote:

someone to check or trouble shoot your rig if it fails?



That would be the last line of defence. But ultimately yes.

Quote:

Does your insurance cover your rig if you park it somewhere and something happens to it? Wind, rain, lightening strike, earthquake or heaven forbid vandals?



Don't have any insurance yet.

Quote:

Do you intend to pay someone something to allow you to use their property, rent or lease on a monthly or annual basis?




Yes

Quote:

A power failure during rain or snow could be a disaster if the dome/roof failed to close. I suppose if you got a fault notice from the rig you could ask the property owner to toss/tie a tarp over it until you could get to the site.




I plan to use the rig for a few years at home to work out any bugs in the system. It will be battery powered from solar cell.

Quote:

It would be ideal if some astro geek with a home in the middle of dark skies was feeling altruistic and volunteered to let you setup there and could take care of it for you.




Agreed - but not so easy to procure


Post Extras: Print Post   Remind Me!   Notify Moderator  
CMacD
super member


Reged: 01/23/12

Loc: Ontario, Canada
Re: Clear nights per year new [Re: Al8236]
      #5578592 - 12/19/12 09:07 AM

Quote:

Perhaps this is what you are looking for!
http://www.ncdc.noaa.gov/oa/climate/online/ccd/cldy.html
Or this!
http://www.currentresults.com/Weather/US/average-annual-state-sunshine.php




Thanks for the links Al. I was kinda hoping for a graphical representation but it might be possible to generate one from this data too.


Post Extras: Print Post   Remind Me!   Notify Moderator  
CMacD
super member


Reged: 01/23/12

Loc: Ontario, Canada
Re: Clear nights per year new [Re: Tom Clark]
      #5578606 - 12/19/12 09:16 AM

Quote:

Clark,

Check out Rancho Hidalgo. It might just be what you are looking for. Sorry I didn't think of it earlier.




Thanks Tom. That might work too. Do you have any idea how I might contact them? I looked at the web site but there wasn't much there.


Post Extras: Print Post   Remind Me!   Notify Moderator  
Steve Drapak
member


Reged: 09/18/08

Loc: Toronto, Canada
Re: Clear nights per year new [Re: CMacD]
      #5581859 - 12/21/12 04:17 AM

It looks like there is a newer one called Granite Gap: http://www.granitegap.com/Blog/September-2010/A-revolutionary-observing-oppor...

There is contact information part way down the page in the comments: Their web address is: www.newhorizonswest.org. Here is their contact information:
New Horizons West Inc.
30 Wasburn Rd
Animas, NM 88020
Phone: 575 548 0067

Not sure if they are live yet. Sounds interesting.

Steve


Post Extras: Print Post   Remind Me!   Notify Moderator  
Steve Drapak
member


Reged: 09/18/08

Loc: Toronto, Canada
Re: Clear nights per year new [Re: CMacD]
      #5581865 - 12/21/12 04:33 AM

You might be able to tease some data out of Wolfram Alpha. It can generate graphical data, though maybe not overlaid on a map. Asking it something like "cloud cover brampton ontario for october 2012" will give you a nice chart of the cloud cover over the month. It's a bit of fiddling to get exactly what you want.
For my area it's averaged a couple of days a month clear for a while now near Toronto (yay Canada!). I went to Tucson last week in hopes of taking in some of the legendary weather there. Rained and cloudy solid for the 3 days I was there. I must have bought something for the scope.... My eye has started to twitch whenever I think about it.

Steve


Post Extras: Print Post   Remind Me!   Notify Moderator  
Parsec96
super member


Reged: 03/07/11

Loc: Canada
Re: Clear nights per year new [Re: Steve Drapak]
      #5583308 - 12/21/12 10:30 PM

Clark, there is such a chart (mean cloud cover at night, per month) in the Canadian Royal Astronomical Society's annual handbook!

Post Extras: Print Post   Remind Me!   Notify Moderator  
CMacD
super member


Reged: 01/23/12

Loc: Ontario, Canada
Re: Clear nights per year new [Re: Steve Drapak]
      #5583705 - 12/22/12 08:38 AM

Quote:


www.granitegap.com
&
www.newhorizonswest.org





Thanks Steve,

Does anyone know any more about what is or will be happening out there? At the New Horizons site they talk about having groups of youth out regularly with rocket launching etc. At first read I got a bit concerned about vandalism or having things fall into an open observatory. I had always hoped to keep my project on the hush hush to some extent. The least amount of public exposure the better. Does anyone have any experience with public sites like this? My trailer is so small someone could easily walk right up to it while in operation and touch or take whatever they pleased.


Post Extras: Print Post   Remind Me!   Notify Moderator  
csa/montana
Den Mama
*****

Reged: 05/14/05

Loc: montana
Re: Clear nights per year new [Re: CMacD]
      #5583855 - 12/22/12 10:52 AM

Quote:

My trailer is so small someone could easily walk right up to it while in operation and touch or take whatever they pleased.





This would be my major concern leaving something like this completely unattended, in a public place. You will be at the mercy of anyone going by it. Your best bet would be on someone's private land, that is occupied, so at least it could be watched somewhat.


Post Extras: Print Post   Remind Me!   Notify Moderator  
1965healy
The Snarkster
*****

Reged: 06/23/07

Loc: San Antonio, TX
Re: Clear nights per year new [Re: csa/montana]
      #5584204 - 12/22/12 02:35 PM

Quote:

Quote:

My trailer is so small someone could easily walk right up to it while in operation and touch or take whatever they pleased.





This would be my major concern leaving something like this completely
unattended, in a public place. You will be at the mercy of anyone going
by it. Your best bet would be on someone's private land, that is
occupied, so at least it could be watched somewhat.




Can you post a pic/sketchof your rig so we can have some idea of what you'retalking about?


Post Extras: Print Post   Remind Me!   Notify Moderator  
Christopher EricksonModerator
Carpal Tunnel
*****

Reged: 05/08/06

Loc: Waikoloa Village, Hawaii
Re: Clear nights per year new [Re: csa/montana]
      #5584218 - 12/22/12 02:50 PM

One of the challenges here in Hawaii is that the weather is very localized because of the influence of the Easterly trade winds combined with the height and size of the volcanoes.

Here in Waikoloa Village, we have had 3.09" of rain so far this year and 310 clear nights. 1/2 hour away in Waimea/Kamuela, they have had about 120" of rain and maybe 60 clear nights.

Waikoloa Village averages about 4-12" of rain a year and about 300-330 clear nights.

Some areas here on the Big Island can get more than 240" of rain a year. They are fun places to visit but I would sure hate to live there!


Post Extras: Print Post   Remind Me!   Notify Moderator  
CMacD
super member


Reged: 01/23/12

Loc: Ontario, Canada
Re: Clear nights per year new [Re: 1965healy]
      #5584480 - 12/22/12 06:25 PM

Quote:

Can you post a pic/sketchof your rig so we can have some idea of what you'retalking about?




Here is the thread about the build - http://www.cloudynights.com/ubbthreads/showflat.php/Cat/0/Number/5488192



Post Extras: Print Post   Remind Me!   Notify Moderator  
CMacD
super member


Reged: 01/23/12

Loc: Ontario, Canada
Re: Clear nights per year new [Re: csa/montana]
      #5584487 - 12/22/12 06:29 PM

Quote:

Your best bet would be on someone's private land, that is occupied, so at least it could be watched somewhat.




That would be ideal Carol, I agree. Perhaps over the next couple of years I will meet someone that lives in southern Arizona, New Mexico, or Texas with a heart for astronomy and has 5'x 7' that they are not using Perhaps I will ask around at the WSP in Feb.


Post Extras: Print Post   Remind Me!   Notify Moderator  
1965healy
The Snarkster
*****

Reged: 06/23/07

Loc: San Antonio, TX
Re: Clear nights per year new [Re: CMacD]
      #5584787 - 12/22/12 10:10 PM

Not where I can post links. Suggest you Google Extech VB300. This is a 3 axis G Force/Shock Sensor contained in a USB dongle. You might want to make a "dummy" scope to mount, attach this and take your rig for a spin. The unit records data that you can analyze using their software. For about $200.00 you can pre-test the road worthiness of your rigs suspension. People have used these to find out just what kind of abuse their "fragile" cargo has been exposed to. Using it BEFORE you mount your scope might save you some costly surprises at the end of your journey.

Post Extras: Print Post   Remind Me!   Notify Moderator  
CMacD
super member


Reged: 01/23/12

Loc: Ontario, Canada
Re: Clear nights per year new [Re: 1965healy]
      #5584823 - 12/22/12 10:34 PM

Quote:

Suggest you Google Extech VB300...




Cool little device.


Post Extras: Print Post   Remind Me!   Notify Moderator  
CMacD
super member


Reged: 01/23/12

Loc: Ontario, Canada
Re: Clear nights per year new [Re: Christopher Erickson]
      #5584830 - 12/22/12 10:45 PM

Quote:

One of the challenges here in Hawaii is that the weather is very localized because of the influence of the Easterly trade winds combined with the height and size of the volcanoes.




Very interesting Chris. The mountains can be great benefactors for clear skies and terrible demons just a few miles down the road! Any data that I glean from satellite images still needs to be tempered with local anomalies. I've noticed that the Happy Jack area around the Discovery Telescope in Arizona seems to have a range that may produce behavior like that.


Post Extras: Print Post   Remind Me!   Notify Moderator  
CMacD
super member


Reged: 01/23/12

Loc: Ontario, Canada
Re: Clear nights per year new [Re: CMacD]
      #5594916 - 12/29/12 07:06 PM

Now that December is almost over I thought it a good idea to show where the best seeing was for the month. It turns out to live on either north coast was rather dismal. The best places for owning an observatory this past month have been in mid to southern Arizona or southern Florida. I would say the Canadian arctic or Alaska as that has been by far the best place on this continent to observe but the conditions for the waking hours of the day have been rather nippy and you don't get to see very far south. Although the nights have been very long



Post Extras: Print Post   Remind Me!   Notify Moderator  
Christopher EricksonModerator
Carpal Tunnel
*****

Reged: 05/08/06

Loc: Waikoloa Village, Hawaii
Re: Clear nights per year new [Re: CMacD]
      #5595023 - 12/29/12 07:50 PM

Quote:

Now that December is almost over I thought it a good idea to show where the best seeing was for the month. It turns out to live on either north coast was rather dismal. The best places for owning an observatory this past month have been in mid to southern Arizona or southern Florida. I would say the Canadian arctic or Alaska as that has been by far the best place on this continent to observe but the conditions for the waking hours of the day have been rather nippy and you don't get to see very far south. Although the nights have been very long




Some notes about astronomy in Alaska, since I lived there for 25 years...

* From about April fifteenth to September first, you only get one star to look at. Sol. Land of the Midnight Sun!

* "Alaska" is too general of a reference. One fifth of the USA is Alaska. You could cut Alaska in half and make Texas the third-largest state.

* Over half of Alaska's population lives in Anchorage and that is where most-all of the best jobs are. Anchorage has considerable light-pollution in the winter, with all of that white stuff on the ground.

* The planets don't get very far above the horizon when you live above 60 degrees North latitude.

* COLD...

* Anchorage has about 30 or so clear, starry nights a year.

* Fairbanks hovers between -30F and -65F during the winter.

* Juneau will show you a whole-new dimension to rain.

* If you have a passion for astrophotography, after a while, Northern lights become just one more form of light pollution.

* Alaska is Jet-Stream-Central.

* In the spring, the mosquitoes arrive before the snow is gone.


Post Extras: Print Post   Remind Me!   Notify Moderator  
CMacD
super member


Reged: 01/23/12

Loc: Ontario, Canada
Re: Clear nights per year new [Re: Christopher Erickson]
      #5595294 - 12/29/12 11:08 PM

Quote:

* COLD...

* Anchorage has about 30 or so clear, starry nights a year.

* Fairbanks hovers between -30F and -65F during the winter.




OUCH! That is one place I do NOT plan to visit in the winter


Post Extras: Print Post   Remind Me!   Notify Moderator  
Alex McConahay
Carpal Tunnel


Reged: 08/11/08

Loc: Moreno Valley, CA
Re: Clear nights per year new [Re: Christopher Erickson]
      #5595308 - 12/29/12 11:16 PM

So, just why did you move to Hawaii?

Alex


Post Extras: Print Post   Remind Me!   Notify Moderator  
Christopher EricksonModerator
Carpal Tunnel
*****

Reged: 05/08/06

Loc: Waikoloa Village, Hawaii
Re: Clear nights per year new [Re: Alex McConahay]
      #5595328 - 12/29/12 11:31 PM

Quote:

So, just why did you move to Hawaii?

Alex




Um... I forget...


Post Extras: Print Post   Remind Me!   Notify Moderator  
Christopher EricksonModerator
Carpal Tunnel
*****

Reged: 05/08/06

Loc: Waikoloa Village, Hawaii
Re: Clear nights per year new [Re: CMacD]
      #5595466 - 12/30/12 01:53 AM

Quote:

Quote:

* COLD...

* Anchorage has about 30 or so clear, starry nights a year.

* Fairbanks hovers between -30F and -65F during the winter.




OUCH! That is one place I do NOT plan to visit in the winter




Actually, observing the Northern Lights while comfortably-dressed for arctic weather on a cold Alaskan night is an awesome experience that you will never forget. It should be on everyone's bucket list!


Post Extras: Print Post   Remind Me!   Notify Moderator  
Alex McConahay
Carpal Tunnel


Reged: 08/11/08

Loc: Moreno Valley, CA
Re: Clear nights per year new [Re: Christopher Erickson]
      #5595707 - 12/30/12 09:01 AM

I'll be there this March......

Alex


Post Extras: Print Post   Remind Me!   Notify Moderator  
Tom and Beth
Post Laureate


Reged: 01/08/07

Loc: Tucson, AZ
Re: Clear nights per year new [Re: Christopher Erickson]
      #5597064 - 12/30/12 10:37 PM

Quote:

Quote:

Quote:

* COLD...

* Anchorage has about 30 or so clear, starry nights a year.

* Fairbanks hovers between -30F and -65F during the winter.




OUCH! That is one place I do NOT plan to visit in the winter




Actually, observing the Northern Lights while comfortably-dressed for arctic weather on a cold Alaskan night is an awesome experience that you will never forget. It should be on everyone's bucket list!




It is on mine! Hopefully they won't be prying me cold dead caboose from the ice the following morning


Post Extras: Print Post   Remind Me!   Notify Moderator  
CMacD
super member


Reged: 01/23/12

Loc: Ontario, Canada
Re: Clear nights per year new [Re: Christopher Erickson]
      #5597480 - 12/31/12 07:40 AM

Quote:

Quote:

Quote:

* COLD...

* Anchorage has about 30 or so clear, starry nights a year.

* Fairbanks hovers between -30F and -65F during the winter.




OUCH! That is one place I do NOT plan to visit in the winter




Actually, observing the Northern Lights while comfortably-dressed for arctic weather on a cold Alaskan night is an awesome experience that you will never forget. It should be on everyone's bucket list!




Oh - ok. I concede. Its probably "A nice place to visit, but I wouldn't want to live there."


Post Extras: Print Post   Remind Me!   Notify Moderator  
AB9MS
member


Reged: 10/19/12

Re: Clear nights per year new [Re: CMacD]
      #5598703 - 12/31/12 08:24 PM

On that map, I assume dark is clear skies and white is lots of cloud cover. I make that assumption form the white blob on the WI/IL border SW WI. I recall about 2 clear nights last month. I work from 9PM to 6AM so the timing for clear nights and me not at work don't line up much. Cool map though.
Lewis


Post Extras: Print Post   Remind Me!   Notify Moderator  
CMacD
super member


Reged: 01/23/12

Loc: Ontario, Canada
Re: Clear nights per year new [Re: AB9MS]
      #5599187 - 01/01/13 08:23 AM

Quote:

On that map, I assume dark is clear skies and white is lots of cloud cover. I make that assumption form the white blob on the WI/IL border SW WI. I recall about 2 clear nights last month. I work from 9PM to 6AM so the timing for clear nights and me not at work don't line up much. Cool map though.
Lewis



The map is made from two sources at the moment. The "Earth at night" image and the Clear Sky chart prediction of the astronomical seeing for midnight. I have started to acquire and infrared weather image for North America to be added to those to provide the "actual" conditions as well (as mountain ranges can be rather finicky with the cloud cover). So to answer your question the brightest white contains the glow from city lights while the light grey to dark blue represent from cloud cover to good seeing (the light grey being an average amount of clouds over the month - as daily images have been added together and then contrast stretched).


Post Extras: Print Post   Remind Me!   Notify Moderator  
Hermie
sage
*****

Reged: 04/20/05

Loc: Cloudy HKG
Re: Clear nights per year new [Re: CMacD]
      #5599211 - 01/01/13 08:55 AM

Clark,

I think if you can find anywhere in the southern US you are on the way. I used to live in LA for a while, and anywhere south of that is pretty good seeing and fairly clear skies. Don't chase perfect - just look for somewhere to set up!

Of course, if you can get Hawaii or Australia go for it!

Your rig is mobile. Get started anywhere you can in SOCAL/Arizona/NM and go from there. Don't forget the seeing! Keep to the coast if you can.

Good Luck!

Hermie


Post Extras: Print Post   Remind Me!   Notify Moderator  
Christopher EricksonModerator
Carpal Tunnel
*****

Reged: 05/08/06

Loc: Waikoloa Village, Hawaii
Re: Clear nights per year new [Re: Hermie]
      #5600200 - 01/01/13 07:34 PM

Quote:

Clark,

I think if you can find anywhere in the southern US you are on the way. I used to live in LA for a while, and anywhere south of that is pretty good seeing and fairly clear skies. Don't chase perfect - just look for somewhere to set up!

Of course, if you can get Hawaii or Australia go for it!

Your rig is mobile. Get started anywhere you can in SOCAL/Arizona/NM and go from there. Don't forget the seeing! Keep to the coast if you can.

Good Luck!

Hermie




Be advised that about 75% of Hawaii is horrible for astronomy and another 15% is marginal. The remaining 10% that is great for astronomy is primarily located in specific areas of the Big Island and Maui. Oahu/Honolulu is packed with people/light pollution and the best places to stargaze are now closed to public access.


Post Extras: Print Post   Remind Me!   Notify Moderator  
CMacD
super member


Reged: 01/23/12

Loc: Ontario, Canada
Re: Clear nights per year new [Re: Christopher Erickson]
      #5600238 - 01/01/13 07:58 PM

Quote:

Be advised that about 75% of Hawaii is horrible for astronomy and another 15% is marginal. The remaining 10% that is great for astronomy is primarily located in specific areas of the Big Island and Maui. Oahu/Honolulu is packed with people/light pollution and the best places to stargaze are now closed to public access.



Now that is just plain sad. I must admit Chris that you just burst my bubble. I guess we still have Chile!


Post Extras: Print Post   Remind Me!   Notify Moderator  
Christopher EricksonModerator
Carpal Tunnel
*****

Reged: 05/08/06

Loc: Waikoloa Village, Hawaii
Re: Clear nights per year new [Re: CMacD]
      #5600737 - 01/02/13 05:15 AM

Quote:

Quote:

Be advised that about 75% of Hawaii is horrible for astronomy and another 15% is marginal. The remaining 10% that is great for astronomy is primarily located in specific areas of the Big Island and Maui. Oahu/Honolulu is packed with people/light pollution and the best places to stargaze are now closed to public access.



Now that is just plain sad. I must admit Chris that you just burst my bubble. I guess we still have Chile!




Why does that burst your bubble?

All it means that you have to put some thought into where in Hawaii you choose to live!

After all, the same would go for Chile...


Post Extras: Print Post   Remind Me!   Notify Moderator  
Midnight Dan
Postmaster
*****

Reged: 01/23/08

Loc: Hilton, NY, Yellow Zone (Bortl...
Re: Clear nights per year new [Re: Christopher Erickson]
      #5600777 - 01/02/13 07:07 AM

Coming in late to this thread, but thanks for the work you put into the map, and for confirming that I live in the worst spot in the country for observing!

-Dan


Post Extras: Print Post   Remind Me!   Notify Moderator  
CMacD
super member


Reged: 01/23/12

Loc: Ontario, Canada
Re: Clear nights per year new [Re: Christopher Erickson]
      #5600857 - 01/02/13 08:48 AM

Quote:

Quote:


Now that is just plain sad. I must admit Chris that you just burst my bubble. I guess we still have Chile!




Why does that burst your bubble?

All it means that you have to put some thought into where in Hawaii you choose to live!

After all, the same would go for Chile...



LOL - I guess that's true. My son just came back from his honeymoon in Hawaii and said that it was raining a good portion of the time. I think it is somewhat of an urban myth that Hawaii is one of the best places on earth for amateur astronomy. Hermie is like most of us when we think of the "Mecca" for astronomy. Yet light pollution exists just about everywhere that man does, and rain or clouds happen pretty near everywhere man does too Which proves your point for sure: Knowing the area is a good thing


Post Extras: Print Post   Remind Me!   Notify Moderator  
Christopher EricksonModerator
Carpal Tunnel
*****

Reged: 05/08/06

Loc: Waikoloa Village, Hawaii
Re: Clear nights per year new [Re: CMacD]
      #5601289 - 01/02/13 01:48 PM

Quote:

Quote:

Quote:


Now that is just plain sad. I must admit Chris that you just burst my bubble. I guess we still have Chile!




Why does that burst your bubble?

All it means that you have to put some thought into where in Hawaii you choose to live!

After all, the same would go for Chile...



LOL - I guess that's true. My son just came back from his honeymoon in Hawaii and said that it was raining a good portion of the time. I think it is somewhat of an urban myth that Hawaii is one of the best places on earth for amateur astronomy. Hermie is like most of us when we think of the "Mecca" for astronomy. Yet light pollution exists just about everywhere that man does, and rain or clouds happen pretty near everywhere man does too Which proves your point for sure: Knowing the area is a good thing




The Big Island of Hawaii has ten of the thirteen major climate types, all in one island! Where I live in Waikoloa Village, we got 3" of rain in 2012, 4" of rain in 2011 and 6" of rain in 2010. We average about 300-330 clear nights a year. However over in Waimea, only 30 minutes away, they got about 120" of rain on the wet side of town! Some parts of the East side of the island (the wet side) get up to 250" of rain a year.

I have a 16" personal scope and here in Waikoloa Village, three of my neighbors have scopes bigger than mine!

Moving to Hawaii to enjoy astronomy can be very rewarding but you will need to carefully do your climate/people/resources research before deciding where to live.

Thirteen world-class professional observatories on Mauna Kea can't be wrong!

I hope this helps.


Post Extras: Print Post   Remind Me!   Notify Moderator  
CMacD
super member


Reged: 01/23/12

Loc: Ontario, Canada
Re: Clear nights per year new [Re: Christopher Erickson]
      #5601446 - 01/02/13 03:39 PM

Quote:

Moving to Hawaii to enjoy astronomy can be very rewarding but you will need to carefully do your climate/people/resources research before deciding where to live.

Thirteen world-class professional observatories on Mauna Kea can't be wrong!

I hope this helps.



I think I speak for the rest of us when I say that I appreciate your attention to detail Chris. As I hope to choose one of the best places in North America to move my trailer, attention to climate and light pollution is the primary reason for this thread. But you make very good points when you include people/resources in there as well. Putting it all together is proving to be a tad more tricky than I originally anticipated.


Post Extras: Print Post   Remind Me!   Notify Moderator  
CMacD
super member


Reged: 01/23/12

Loc: Ontario, Canada
Re: Clear nights per year new [Re: CMacD]
      #5647787 - 01/28/13 10:48 AM

January has been a rather blah month for most of North America. Southwest states and Florida Keys continue to be the best places to view on the continent. Nothing new there. Although Utah and Nevada picked up more clear skies this month compared to December as did southern Idaho and Oregon.



Post Extras: Print Post   Remind Me!   Notify Moderator  
CMacD
super member


Reged: 01/23/12

Loc: Ontario, Canada
Re: Clear nights per year new [Re: CMacD]
      #5701217 - 02/26/13 09:17 AM

February has been very similar to January. I had a chance to attend the WSP in the Florida Keys this year and can confirm the mostly cloudless skies and fair seeing. During the week of the new moon the atmosphere would be rated 4/5. We got some fair images of Jupiter. Other than the keys however it looks like the southwest was about the only area with reasonable skies for the month. Its starting to get interesting watching as the different areas of the continent show their monthly transitions.



Post Extras: Print Post   Remind Me!   Notify Moderator  
rlandsboro
super member


Reged: 02/23/12

Loc: Scottsdale, AZ. USA
Re: Clear nights per year new [Re: CMacD]
      #5704384 - 02/27/13 10:10 PM

Quote:

Quote:

Be advised that about 75% of Hawaii is horrible for astronomy and another 15% is marginal. The remaining 10% that is great for astronomy is primarily located in specific areas of the Big Island and Maui. Oahu/Honolulu is packed with people/light pollution and the best places to stargaze are now closed to public access.




I'm just curious - what part of Maui would you recommend for astronomy?


Post Extras: Print Post   Remind Me!   Notify Moderator  
Christopher EricksonModerator
Carpal Tunnel
*****

Reged: 05/08/06

Loc: Waikoloa Village, Hawaii
Re: Clear nights per year new [Re: rlandsboro]
      #5704526 - 02/27/13 11:40 PM

Quote:

Quote:

Quote:

Be advised that about 75% of Hawaii is horrible for astronomy and another 15% is marginal. The remaining 10% that is great for astronomy is primarily located in specific areas of the Big Island and Maui. Oahu/Honolulu is packed with people/light pollution and the best places to stargaze are now closed to public access.




I'm just curious - what part of Maui would you recommend for astronomy?




The summit of Haleakala is the most important part!


Post Extras: Print Post   Remind Me!   Notify Moderator  
OLDTIMER77
member


Reged: 01/26/11

Re: Clear nights per year new [Re: CMacD]
      #5709970 - 03/03/13 05:47 AM

An interesting question CMAcD of Ontario, Canada asks and one I would ask of amateur astronomers living in England trying to observe 'anything' in this Country.

Ofcourse the question of clear nights is somewhat subjective: one observer's interpretation of a clear night sky is another's view of only 30/40% cloud covered.
Here in Buckinghamshire I have only seen 3 totally clear night skies in the last 18months and tempting as it was to just observe and photo I decided to renew my CGE PRO:2+4 align/calib stars because of the rare opportunity of selecting widely placed reasonably low stars in the North and Eastern night skies.
This exercise was very worth while because it greatly improved my 'Scope GOTO performances, the following night which amazingly was also 100% clear.

However it was almost 5months later before another totally clear night sky became visible.
So! in between these rarities we amateurs in Britain have to be satisfied with a night sky in which perhaps only 30% or maybe 70% is revealing 'beautiful stellar objects'.

Another issue of course is how much of the sky is visible from your own back yard without too much obstruction from neighbours houses. roof and trees etc.
Fortunately to have a small observatory, my observing is restricted to NW:SE:some Southerly aspects and these are only visible at altitudes in XS of 30deg.

BUT if I am able to see most all the stars visible at these locations I would consider myself lucky to have a ClearNight Sky.

Please excuse the longish post but the point I wished to emphasise is that Clearskies does not necessary mean what it says:
However I will end wishing everyone:
"May each of you have the best possible Clear Night Skies for your future observing.
Thank you for reading.
OldTimer


Post Extras: Print Post   Remind Me!   Notify Moderator  
CMacD
super member


Reged: 01/23/12

Loc: Ontario, Canada
Re: Clear nights per year new [Re: OLDTIMER77]
      #5710683 - 03/03/13 01:41 PM

I understand what you are saying OldTimer. I live in the country now but before we moved out here we used to live in a city of about 300,000 people. A lot of light pollution there. Now about 45 min north of that is much less light polluted but I live among the trees I like to observe visually but would much rather be doing more astronomical discovery. To do that with any frequency you really need a lot of clear sky - in every sense of the word. Hence this thread and the desire to find the best place possible for a remote observatory. Now I am finding out that clear skies are only part of the battle. Whoda thunk?

Post Extras: Print Post   Remind Me!   Notify Moderator  
CMacD
super member


Reged: 01/23/12

Loc: Ontario, Canada
Re: Clear nights per year new [Re: CMacD]
      #5773127 - 04/02/13 03:19 PM

March. I have been comparing the weather across North America now since late November 2012 and Arizona is starting to become the "clear" choice for sky watching (for the winter months at least). New Mexico, Texas, and the Florida Keys didn't fair so well this time around. It turns out that this past month Manitoba and British Columbia had the largest clear areas on the continent. I bet that doesn't happen very often. Not too many observatories built in those places. I suppose all one would need is to brave the -20 degree weather and shovel a few feet of snow off of the observatory roof and you would be set



Post Extras: Print Post   Remind Me!   Notify Moderator  
Spacetravelerx
Carpal Tunnel


Reged: 12/23/12

Loc: New Mexico
Re: Clear nights per year new [Re: CMacD]
      #5773797 - 04/02/13 07:38 PM

Clark,

Being in New Mexico I can agree with the trends you show. I can totally agree with the results for AZ.

Key highlights here in NM:
-- DRY CLIMATE
-- High altitude
-- 310+ clear skies

Moving from the Midwest I not only far more days of viewing, but also the skies were much clearer. It was like I got a new telescope.

I am now convinced using a larger size telescope out east is completely useless. Yes, it is better than nothing, the difference in performance between the east coast and southwest is profound.

Oh and no mosquitos and all that.


Post Extras: Print Post   Remind Me!   Notify Moderator  
johne
sage
*****

Reged: 11/10/06

Loc: Prescott, AZ.
Re: Clear nights per year new [Re: Spacetravelerx]
      #5774841 - 04/03/13 08:20 AM

I've been keeping an eye on this thread and up until this last map posting, it looked pretty accurate. However, where I live, in the mountains about 5 miles NW of Prescott,

the later part of Feb. and most all of March sure seemed to have had poor conditions with high clouds most late afternoons and nights.

Edited by johne (04/03/13 08:40 AM)


Post Extras: Print Post   Remind Me!   Notify Moderator  
CMacD
super member


Reged: 01/23/12

Loc: Ontario, Canada
Re: Clear nights per year new [Re: johne]
      #5775028 - 04/03/13 09:30 AM

Quote:

I've been keeping an eye on this thread and up until this last map posting, it looked pretty accurate. However, where I live, in the mountains about 5 miles NW of Prescott, the later part of Feb. and most all of March sure seemed to have had poor conditions with high clouds most late afternoons and nights.




Very interesting Johne. Thanks for pointing this out. I waited a little longer than usual to post this month because my machine somehow bungled the downloading of 10 days worth of data from the 8th until the 18th. I added the first few days of April in an attempt to minimize the loss but you caught me . It looks like 10 days over the course of the month can really make a big difference. Good catch.


Post Extras: Print Post   Remind Me!   Notify Moderator  
johne
sage
*****

Reged: 11/10/06

Loc: Prescott, AZ.
Re: Clear nights per year new [Re: CMacD]
      #5775280 - 04/03/13 11:12 AM

I just wonder whether the system that captures the information is not that sensitive to thin, high/cirrus clouds? (Just speculating.)

Post Extras: Print Post   Remind Me!   Notify Moderator  
CMacD
super member


Reged: 01/23/12

Loc: Ontario, Canada
Re: Clear nights per year new [Re: johne]
      #5775593 - 04/03/13 01:36 PM

Quote:

I just wonder whether the system that captures the information is not that sensitive to thin, high/cirrus clouds? (Just speculating.)




The images are a prediction only so I would expect some discrepancies with reality. I should also mention however that I am capturing real infra-red satellite images 3 times a night as well. I was planning on pasting them together in a final collage after a full year but could place them along side of the predicted "seeing" images also.


Post Extras: Print Post   Remind Me!   Notify Moderator  
Calypte
Pooh-Bah


Reged: 03/20/07

Loc: Anza, California
Re: Clear nights per year new [Re: johne]
      #5776071 - 04/03/13 05:53 PM

Quote:

I just wonder whether the system that captures the information is not that sensitive to thin, high/cirrus clouds? (Just speculating.)



Meteorologists have a different idea of "clear" than we astronomers. I frequently see forecasts of "clear" and even descriptions of current conditions that show "clear," when all they really mean is that, somewhere above that deck of cirrostratus, there are probably some stars.


Post Extras: Print Post   Remind Me!   Notify Moderator  
Mike Clemens
Frozen to Eyepiece
*****

Reged: 11/26/05

Loc: Alaska, USA
Re: Clear nights per year new [Re: Calypte]
      #5841771 - 05/05/13 02:24 PM

Thus concludes the worst year I remember for deep sky pics in Alaska in the last 10? I think I had 5 sessions this year. Looking forward to September.... I mean, except for everything else but astrophotography. I worked hard to set myself up for daytime photography this last four months, sort of throwing in the towel.

Post Extras: Print Post   Remind Me!   Notify Moderator  
Christopher EricksonModerator
Carpal Tunnel
*****

Reged: 05/08/06

Loc: Waikoloa Village, Hawaii
Re: Clear nights per year new [Re: Mike Clemens]
      #5842174 - 05/05/13 06:13 PM

Quote:

Thus concludes the worst year I remember for deep sky pics in Alaska in the last 10? I think I had 5 sessions this year. Looking forward to September.... I mean, except for everything else but astrophotography. I worked hard to set myself up for daytime photography this last four months, sort of throwing in the towel.




You should take your 200mm TEC APO and AP1200GTO and ship them to me! We'll set them up in a small robotic observatory here on my property in Hawaii and you can run them remotely...


Post Extras: Print Post   Remind Me!   Notify Moderator  
CMacD
super member


Reged: 01/23/12

Loc: Ontario, Canada
Re: Clear nights per year new [Re: CMacD]
      #5843197 - 05/06/13 10:09 AM

April 2013. I must have had my laptop unplugged more than I realized this past month. Only 16 images were used to create this collection for the month (oops). They are spread out over the course of the month so that is one consolation. Southern Arizona and southern Florida are the winners again. I have never been to Texas but looking over the images for the past 6 months I would have expected clearer skies for the number of professional observatories located in that state. Then again they are located in the western edge of the state so I guess that goes to show as the realtors say "Location, Location, Location!".



Post Extras: Print Post   Remind Me!   Notify Moderator  
CMacD
super member


Reged: 01/23/12

Loc: Ontario, Canada
Re: Clear nights per year new [Re: CMacD]
      #5903393 - 06/05/13 08:28 AM

May 2013. This past month has been another for Arizona and Florida. Apart from Northern Alberta and Saskatchewan most of North America had mostly equal seeing and cloud cover. Well, the west was better than the east.



Winter/Spring 2012-2013.

I don't know about the rest of you but up here in Ontario, Canada we have had a pretty cool spring. Almost out of the norm - at least for the past few years anyway. The following image is a compilation of 144 images from late November 2012 until this morning. Clearly the winners over this past winter and spring have been southern Arizona and the Florida Keys. Given the fact that the Keys are prone to severe weather on a yearly basis around hurricane season I would say that I am leaning towards southern Arizona around the area of Prescott to be the best place for observing in all of North America so far. Does that sound about right? I would say to the west of Tucson but I have read that this area can be kind of rough and dangerous with people needing to bring guns and leave an observing schedule with the local sheriff etc. On a final note an interesting place nearing the mid latitude of the states is Greybull Wyoming. I wasn't expecting to see a single patch of clear good seeing up there. I guess topography has a lot to do with it.


Post Extras: Print Post   Remind Me!   Notify Moderator  
Starhawk
Space Ranger
*****

Reged: 09/16/08

Loc: Tucson, Arizona
Re: Clear nights per year new [Re: CMacD]
      #5903506 - 06/05/13 09:55 AM

It looks like the best places would be either Willcox, AZ, or up near Safford, AZ would be the best place. This wouldn't be a coincidence- the Large Binocular Telescope was put on top of Mount Graham because of the superior seeing and weather in. That area.

There is a ham radio station on top of Heliograph peak, just down the way. It would be worth a try to see if they would be willing to let a little robotic observatory join their antennas on a 10,000 peak.

-Rich


Post Extras: Print Post   Remind Me!   Notify Moderator  
vsteblina
sage


Reged: 11/05/07

Loc: Wenatchee, Washington
Re: Clear nights per year new [Re: CMacD]
      #5903522 - 06/05/13 10:01 AM

Quote:

.......I would say to the west of Tucson but I have read that this area can be kind of rough and dangerous with people needing to bring guns and leave an observing schedule with the local sheriff etc.




That was only because we spent the winter in the area. AND I do mean winter...on Jan 15th the low for the morning was 12!

There are plenty of developed campgrounds and other spots for observing.

Not sure I would feel comfortable with just camping outside of developed facilities with all the aliens streaming north through the area.

There are also the internal Border Patrol checkpoints scattered about the area. I don't know how well-lit they are at night....but the internal checkpoint outside of Tombstone looks like it has a great observing spot just east of it!!

We have spent two winters in the area. Next year, we will probably be looking for a warmer area closer to the Colorado River area.

The only downside from an observing point of view is the area sometimes gets dust particles in the air. There is a big dry lake bed in the middle of the area and I think the dust comes from that lake bed.

BTW.....we stayed in Benson.

Edited by vsteblina (06/05/13 10:06 AM)


Post Extras: Print Post   Remind Me!   Notify Moderator  
CMacD
super member


Reged: 01/23/12

Loc: Ontario, Canada
Re: Clear nights per year new [Re: Starhawk]
      #5903531 - 06/05/13 10:07 AM

Quote:

There is a ham radio station on top of Heliograph peak, just down the way. It would be worth a try to see if they would be willing to let a little robotic observatory join their antennas on a 10,000 peak.
-Rich




That's a cool idea Rich. I should look into that - thanks.


Post Extras: Print Post   Remind Me!   Notify Moderator  
CMacD
super member


Reged: 01/23/12

Loc: Ontario, Canada
Re: Clear nights per year new [Re: CMacD]
      #5952979 - 07/03/13 11:56 AM

June 2013. This past month has not been very good. I would have thought that June and July would have been the really nice clear months but it is not shaping up that way. Southern Florida is still a good place to be as well as Arizona and maybe the extreme South West of California although the light pollution there is killer?



Post Extras: Print Post   Remind Me!   Notify Moderator  
LakeFX
sage


Reged: 01/02/07

Loc: West Michigan
Re: Clear nights per year new [Re: CMacD]
      #5998666 - 07/30/13 03:35 PM Attachment (7 downloads)

http://neo.sci.gsfc.nasa.gov/Search.html?datasetId=MODAL2_M_CLD_FR

Monthly averages...

Works with Google Earth.

Edited by LakeFX (07/30/13 03:36 PM)


Post Extras: Print Post   Remind Me!   Notify Moderator  
CMacD
super member


Reged: 01/23/12

Loc: Ontario, Canada
Re: Clear nights per year new [Re: LakeFX]
      #5999642 - 07/31/13 07:59 AM

Quote:

http://neo.sci.gsfc.nasa.gov/Search.html?datasetId=MODAL2_M_CLD_FR

Monthly averages...

Works with Google Earth.




Very interesting Michael. I haven't seen that site before. Some of the more useful visual images are just one day sadly - but overall quite informative. Thanks.


Post Extras: Print Post   Remind Me!   Notify Moderator  
CMacD
super member


Reged: 01/23/12

Loc: Ontario, Canada
Re: Clear nights per year new [Re: CMacD]
      #6011549 - 08/07/13 01:49 PM

July 2013. This past month has been almost a repeat of June. Not very good. Florida saw a bit more cloud this month as did southern Arizona. The central states saw a little less dense cloud cover but nothing to write home about. I would have to say that there is no clear winner this month. The south west is just marginally better than the rest of the continent this time around.



Post Extras: Print Post   Remind Me!   Notify Moderator  
CMacD
super member


Reged: 01/23/12

Loc: Ontario, Canada
Re: Clear nights per year new [Re: CMacD]
      #6064180 - 09/05/13 10:56 AM

August 2013. Nothing special this month either. For the first time Georgia, Alabama, and Mississippi made the running - although there seems to be quite a bit of light pollution that way. The Florida Keys always seem to be in the running and usually have good seeing and transparency. This month was another strong showing for them. New Mexico and Arizona had nothing out of the ordinary for a third straight month.


Post Extras: Print Post   Remind Me!   Notify Moderator  
vsteblina
sage


Reged: 11/05/07

Loc: Wenatchee, Washington
Re: Clear nights per year new [Re: CMacD]
      #6064611 - 09/05/13 02:52 PM

Quote:

Quote:


The best source in my opinion is the clear sky charts sponsored sites. They have the forecasts for night by month.





Hi Vladimir, I like the clear sky charts also. They are a great resource and tend to be fairly accurate too. I am unaware of how they are organized by month though?




Sorry, I missed this message of yours. The sponsored clocks under FORECAST HISTORY have a summary of all the elements shown in the clocks, by month. So you can get cloud cover in 10% increments for each month.

Really a great service and an excellent reason to sponsor a clock.

I just wish he would send out BILLS for sponsorship....I keep forgeting to pay mine ahead of time!!


Post Extras: Print Post   Remind Me!   Notify Moderator  
CMacD
super member


Reged: 01/23/12

Loc: Ontario, Canada
Re: Clear nights per year new [Re: vsteblina]
      #6064617 - 09/05/13 02:57 PM

Quote:

The sponsored clocks under FORECAST HISTORY have a summary of all the elements shown in the clocks, by month. So you can get cloud cover in 10% increments for each month.

Really a great service and an excellent reason to sponsor a clock.





Does this service only exist for sponsors then? I searched the page for the word "history" but didn't find any.


Post Extras: Print Post   Remind Me!   Notify Moderator  
Pages: 1 | 2 | 3 | 4 | (show all)


Extra information
2 registered and 5 anonymous users are browsing this forum.

Moderator:  Christopher Erickson 

Print Thread

Forum Permissions
      You cannot start new topics
      You cannot reply to topics
      HTML is disabled
      UBBCode is enabled


Thread views: 6043

Jump to

CN Forums Home


Cloudy Nights LLC
Cloudy Nights Sponsor: Astronomics