Friends call me Duane. Compustar C14, Leo Henzl's Custom C8, 6" Refractor Adv. GT mount, 6" F5 Omni XLT Newt., LXD-75 F4 Imaging SN8, Meade 8" F6 Newtonian, EX Dynamax DX6, RV-6 ETX-90 Astro, Meade 2045 4" SCT, B&L 4000 Vixen/Celestron 80mm F11 JC Penny 60mm AZ/ALT Refractor Binos 25x100
Kevin Apertura 8" Dob, Pentax K-5 My Photography Website -- My Flickr
Sky-Watcher Pro 120ED iOptron iEQ45-AZ GEM Canon 60D (modified) http://www.astrobin.com/users/dc_robert/
Quote:If you go to Clear Dark Sky look for a location with a red star next to it. Since those charts are sponsored they keep a history of observing conditions. It's easy to see comparing different locations that the west coast gets good seeing much more often. In Chicago for example 5/5 seeing happens on 3% of clear nights in July. In Huntington Beach, CA 5/5 seeing happens on 23% of clear nights in July.
Quote:I've found Clear Dark Sky to be largely off-the-mark. Perhaps I'm looking at it from a biased viewpoint, but when it predicts clear or steady from my NJ location, I always try to observe. It has never been right this year as far as good (not even excellent) seeing and there have often been clouds on evenings predicted to be clear.I think the model is seriously flawed.Grant
Rural central lower Michigan
Quote:I've found Clear Dark Sky to be largely off-the-mark. Perhaps I'm looking at it from a biased viewpoint, but when it predicts clear or steady from my NJ location, I always try to observe. It has never been right this year as far as good (not even excellent) seeing and there have often been clouds on evenings predicted to be clear.I think the model is seriously flawed.
Tom Polakis Tempe, AZ Visual observing, DSLR photography, lunar & planetary imaging http://www.pbase.com/polakis/
--MichaelDark site scope: Meade 8" f/6 DobWeeknight scopes: C9.25/iEQ45M, C102/LXD-75(I am looking for a 1980s Edmund Scientific 3" f/10 red-tube reflector, PM me if you have or know of one!)
Quote:Actually I referring to areas that have consistantly better seeing than other parts of the country.I know when I visit my friend in Colorado, the seeing is always better than here in the Midwest.
First and foremost observing love: naked eye.
Last but not least, telescopes.
And I sometimes dabble with cameras.
My eyepieces are made from the waste product of exploding stars.
10XTi 102XLT ST80A(2" Focuser); President, Eypieces Anonymous, Denver Chapter (Hello, I'm an eyepiece junky, what's your excuse?)
DAS Dark Site
Quote:In your experience, are there ever nights with good seeing in which CSC shows that it is supposed to be poor?
"Great men are forged in fire. It is the privilege of lesser men to light the flame." --John Hurt, as The War Doctor12" f/4.9 Skywatcher Collapsible Dobsonian8" f/4.9 Orion Newtonian on alt-az mountOberwerk 15x70 BinocularsMinimalist Eyepiece Collection: 30mm ES-82, 22mm Vixen LVW, 14mm Delos, 10mm Delos, 7mm Pentax XW, 2X GSO 2" ED Barlow, 3X Explore Scientific Focal Extender, 4X Powermate
Quote: Why not use multiple resources for observation planning?
Quote: Seeing, that is the stability of the atmosphere depends not only the big picture, the sorts of things the Clear Sky Clock looks at, but also local conditions that affect the seeing.
Quote: ...but it's always important to actually take a look at the generated maps for a view of the surrounding region.
Quote: I think the model is seriously flawed.
"I have been paddling in the shallows of a great ocean of knowledge." - Sir Isaac Newton * * 15" F4.55 Starsplitter Dob & a Denk II binoviewer * * http://peaceofsky.wordpress.com/ Pacheco State Park Fremont Peak