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] Entrance · Main Index · Search · New user · Who's Online FAQ · Calendar Equipment Discussions >> Binoculars Previous   Index   Next   Flat   GlennLeDrew professor emeritus Reged: 06/18/08 Posts: 620 Loc: Ottawa, Ontario, Canada Re: The "Other" Double-Double in Lyra       06/21/08 10:57 PM Edit   Reply   Quote   Quick Reply:   About a decade ago I stumbled on this one quite by accident. I was trying to sweep up the Ring nebula with a 5" f/5 binocular I built for a buddy, and when this "pair of pairs" drifted into view I had to blink my eyes a bit because I really thought I was starting to see double! But this duo is a really neat sight due to the similarities; separation, position angle and component brightnesses. In other words, kind of like clones of each other. They're cataloged as Struve 2472 and Struve 2474, if memory serves. -------------------- Home-made 11X50 right angle bino, 8.1 deg. FOV Modified 26X100 bino, 3.5 deg. FOV Mediocre minds discuss people. Good minds discuss events. Great minds discuss ideas. Post Extras       Entire thread Subject Posted by Posted on The "Other" Double-Double in Lyra CESDewar 06/21/08 10:41 PM Re: The "Other" Double-Double in Lyra GlennLeDrew   06/21/08 10:57 PM Re: The "Other" Double-Double in Lyra Dave Mitsky   06/22/08 01:15 AM Re: The "Other" Double-Double in Lyra SaberScorpX   06/22/08 03:22 PM Re: The "Other" Double-Double in Lyra Special Ed   06/25/08 02:58 AM Re: The "Other" Double-Double in Lyra ronharper   06/25/08 11:30 AM Re: The "Other" Double-Double in Lyra CESDewar   06/25/08 09:19 PM Re: The "Other" Double-Double in Lyra Dis   06/25/08 09:35 PM Extra information 7 registered and 21 anonymous users are browsing this forum. Moderator:  EdZ  Forum Permissions       You cannot start new topics       You cannot reply to topics       HTML is disabled       UBBCode is enabled Rating: Thread views: 513 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 Imaging   Film Astrophotography   DSLR & Digital Camera Astro Imaging & Processing   CCD Imaging & Processing   Solar System Imaging & Processing   Sketching   Astro Imaging/Sketching Contest *Observing* -----   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 Home

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