Allan has posted elsewhere the outcome of meeting with directors and CMC policy people: his forecasts will remain unchanged for about a year. They they will...
Indeed the issue of this exercise was settled last friday. There was a few meeting where the astro-weather web page was on the agenda last week. To my big...
Attilla & Allan: I don't know how much impact it had, but I know they got a lot of mail from south of the border too. At any rate, I'm VERY glad the service...
I dragged myself out of bed at 4 a.m. for a look at the planets. As usual, I put the 10-inch out into the night air before I went to bed, so its temperature...
I have had the same experience as well. When the star twinkle a lot, it doesn't mean the seeing will be bad and the reverse is true as well. I am trying to...
... Use a slit-stroboscope with a telesscope? I would never have thought of that. Actually, I have tried to do the same sort of thing, but with a low-light...
This Leonid weather page has an internesting map of cloudiness fraction for the month of november. http://home.cc.umanitoba.ca/~jander/Leonids/leonids.htm ...
This won't be much help, but the map used data from the Satellite Active Archive, whose web page is http://www.saa.noaa.gov/. I think you would be able to...
I personnaly don't have this information handy at CMC. I know Jay Anderson did many study of cloud coverage based on satellite imageries for many solar ...
Hello A long time ago I made statistics of the average cloud cover during the night. I had 30 years data from all hours from a station at 58N 17E. To my...
Hello Alister, I will try to describe the situation I had. I was working in the weather service and was returning 30 years of observations to a station. It was...
Hi, I would like to express my best new year wishes to all of you. Healt success and many many clear skies for 2003. Latest CMC news... The biggest news at CMC...
I just wanted to say thanks to Allan and Atilla for this excellent service. I've been a user for sometime and glad to see Colorado has the most clocks. I've...
... I presume you mean the CMC astronomy forecasts and the clear sky clocks. You're most welcome. ... Actually, California has the most clocks. But thats only...
I am curious to know where you live exactly... or which clocks you are using. When you say you can't have a good match, are you talking about seeing or cloud...
Hi Allan, Its seeing that's the problem for me. I'll e-mail my lat and long to you this weekend. I use the seeing forecast to determine whether to haul out...
... I agree with you Mike, the time step is too long for fast moving low clouds streamers from the great lakes. This is a limitation of the CSC in forecasting...
Hi Mike, I did the changes I promised you last week. I am now forecasting seeing conditions when total cloud cover is smaller than 9/10 instead of the current...
... Hi David, Thanks for your interest about the transparency forecast. I actually use the spread between the dew point and temperature from the surface up to ...
Hi, Has anybody tried using an archive of the old maps to compare potential locations for an observatory? I'd be interested in looking back through the maps...
I've been using the light pollution maps at http://www.inquinamentoluminoso.it/worldatlas/pages/fig1.htm For the probably of being clear, you might find...
... Steve, Does your 18" have fans in the back of the mirror to coll it down? My 22" scope has 4 fans blowing air on the back of the mirror. It does improve ...
... Hi Clif... The seeing forecast I developped is based on visual observations. I have the impression the CCD seeing and visual seeing corrolation isn't that ...
CMC implemented a new REGIONAl DM model today which is a version running on the new IBM super computer (replacing NEC SX6). This model has many importent...
Hi, Attilla and I are pleased to announce that we are now providing hourly forecast for the cloud field all across north america. This was the most requested...
Allan, Thank you very much for the hourly cloud forecast. I look forward to your future improvements. Hourly forecasts for cloud and transparency will be ...
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