· Get a Cloudy Nights T-Shirt · Submit a Review / Article    Click here if you are having trouble logging into the forums Cloudy Nights - Official Forums of the 2009 International Year of Astronomy Privacy Policy | Please read our Terms of Service | Signup and Troubleshooting FAQ | Problems? PM a Red or a Green Gu.... uh, User   You are not logged in. [Login] Forum Archives · Entrance · Main Index · Search · New user · Who's Online FAQ · Calendar Observing >> Deep Sky Observing Previous   Index   Next   Flat   Starman1 Vendor - Scope City Reged: 06/24/03 Posts: 12223 Loc: Los Angeles Re: Transparency variability.....       07/04/09 02:54 PM Edit   Reply   Quote   Quick Reply:   I saw this the last time out, and it more-or-less corresponded to the momentary changes in transparency. I think this can also be small scale, too, as I see it often when viewing a large low-surface-brightness object. The details in the galaxy or nebula seem to come and go over a span of minutes. There is not any noticeable cloudiness when this happens (blue skies at sunset and dawn and no high cirrus passing through) -------------------- Don Pensack 12.5" Truss Dob, 5" Maksutov, Fujinon Binos Sustaining Lifetime IDA member Post Extras       Entire thread Subject Posted by Posted on Transparency variability..... Mr. Bill 06/28/09 01:24 PM Re: Transparency variability..... Tony Flanders   06/29/09 07:03 AM Re: Transparency variability..... Hrundi   06/29/09 07:27 AM Re: Transparency variability..... Mr. Bill   06/29/09 09:51 AM Re: Transparency variability..... 7331Peg   06/29/09 06:53 PM Re: Transparency variability..... Starman1   07/04/09 02:54 PM Re: Transparency variability..... Astrojensen   06/28/09 03:23 PM Re: Transparency variability..... Mr. Bill   06/28/09 03:44 PM Extra information 3 registered and 1 anonymous users are browsing this forum. Moderator:  Olivier Biot  Forum Permissions       You cannot start new topics       You cannot reply to topics       HTML is disabled       UBBCode is enabled Rating: Thread views: 254 Jump to *International Year of Astronomy 2009* -----   Global Coordination   Cornerstone Projects   Special Projects   Special Task Groups   Global Activities   National and Regional Activities   IYA 2009 in Africa   IYA 2009 in the USA*Announcements and News* -----   Cloudy Nights Announcements   Discussion of CN Articles, Reviews, and Reports   Beginners Forum   Celestial Events   Light Pollution*Equipment Discussions* -----   ATM, Optics and DIY Forum   Binoculars   Binoviewers   Cats & Casses   Classic Telescopes   Equipment   Eyepieces   Mounts   Observatories   Reflectors   Refractors    Celestron SkyScout and Meade mySky   Video and Electronically Assisted Astronomy*Astrophotography and Sketching* -----   Beginning and Intermediate Imaging   Film Astrophotography   DSLR & Digital Camera Astro Imaging & Processing   CCD Imaging & Processing   Solar System Imaging & Processing   Sketching   Astro Imaging/Sketching Contest *Observing* -----   NEO   General Observing   Planetary and Solar System Observing   Lunar Observing   Deep Sky Observing   Double Star Observing   Solar   Variable Star Observing and Radio Astronomy*Telescope Specific Forums* -----   Celestron NexStar    NexStar GPS / CPC Telescopes   Questar Forum   Meade ACF/RCX / LX / GPS    Meade ETX*Other* -----   Science of Astronomy & Space Exploration   AstroWebsites   Space Rocks*Speciality Forums* -----   AstroArt   Astronomy Software & Computers   Stellar Media   Astro Outreach, Clubs and Star Parties*CN Feedback and Vendor Announcements* -----   Vendor and Group Announcements CN Forums Home

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