· 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 >> Variable Star Observing and Radio Astronomy Previous   Index   Next   Flat   gavinm scholastic sledgehammer Reged: 08/26/05 Posts: 804 Loc: Auckland New Zealand Re: Some rambling, feedback solicited       07/05/09 09:11 PM Edit   Reply   Quote   Quick Reply:   As Brian mentioned, exposures may be long, so get the most sensitive camera you can afford, with regulated cooling. There is science that can be done using different wavelengths, like limb-darkening or atmospheric detection, but you would do an entire transit in one wavelength then repeat with another wavelength - not changing during a transit. I have encountered no photometric issues using a filter wheel. I would start with variables too. -------------------- Gavin Mt Albert Grammar School Observatory Auckland, New Zealand http://www.mags.school.nz/astronomy/index.html 12" LX200R F6.8 AP SBIG ST7-XME + CFW10 Moonlite SCT focuser w/ temp Skywatcher Equinox ED80 Pro (ADM dovetail) + other stuff Post Extras       Entire thread Subject Posted by Posted on Some rambling, feedback solicited groz 07/03/09 01:53 PM Re: Some rambling, feedback solicited jeffg   07/10/09 06:05 PM Re: Some rambling, feedback solicited groz   07/11/09 03:09 PM Re: Some rambling, feedback solicited groz   07/17/09 01:20 PM Re: Some rambling, feedback solicited groz   08/24/09 11:44 PM Re: Some rambling, feedback solicited walt r   08/25/09 09:38 AM Re: Some rambling, feedback solicited groz   08/25/09 03:32 PM Re: Some rambling, feedback solicited btieman   08/25/09 10:53 PM Re: Some rambling, feedback solicited cflrich   07/03/09 06:44 PM Re: Some rambling, feedback solicited jgraham   07/03/09 03:01 PM Re: Some rambling, feedback solicited btieman   07/03/09 06:04 PM Re: Some rambling, feedback solicited groz   07/05/09 06:00 PM Re: Some rambling, feedback solicited gavinm   07/05/09 09:11 PM Re: Some rambling, feedback solicited groz   07/07/09 05:17 PM Re: Some rambling, feedback solicited cflrich   07/07/09 07:50 PM Re: Some rambling, feedback solicited brianb11213   07/08/09 05:00 AM Extra information 0 registered and 1 anonymous users are browsing this forum. Moderator:  RLTYS  Forum Permissions       You cannot start new topics       You cannot reply to topics       HTML is disabled       UBBCode is enabled Rating: Thread views: 470 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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