ARCHIVE · Login   · Main Index   · Search Observing >> Double Star Observing Previous   Index   Next   Threaded   Pages: 1 | 2 | (show all) Paul V.C. member Reged: 08/19/07 Posts: 16 Loc: Belgium Re: Struve 2470/2474 Lyra's other Double-Double [Re: JohanK]       #2480726 - 06/24/08 06:14 PM Edit   Reply   Quote Quick Reply   There's a small article on these stars in Sky and Telescope, july 1998 issue, page 103 rgds Paul -------------------- Paul Van Cauteren Beersel Hills Observatory Beersel, Belgium Post Extras:       Avatar sage Reged: 05/27/06 Posts: 249 Re: Struve 2470/2474 Lyra's other Double-Double [Re: JohanK]       #2481027 - 06/24/08 08:21 PM Edit   Reply   Quote Quick Reply   I think the distance between the pairs in this double double is roughly twice that of the distance separating the more famous pair. Anybody know the magnitude of the teeny-tiny star between? Is it really mag ~12? This would be a good reference magnitude for me. Post Extras:       acafar member Reged: 06/17/06 Posts: 60 Loc: Madrid, Spain Re: Struve 2470/2474 Lyra's other Double-Double [Re: Avatar]       #2481540 - 06/25/08 02:27 AM Edit   Reply   Quote Quick Reply   The faint star forming a triangle with STF 2470/2474 -at the left in Rich's sketch- has visual magnitude 9.07 according to the Tycho catalogue. -------------------- Rafa Vixen 4" Sf f/9,Scopos 2.5" f/6 Post Extras:       vanhooglesnort member Reged: 02/18/08 Posts: 92 Re: Struve 2470/2474 Lyra's other Double-Double [Re: acafar]       #2482956 - 06/25/08 05:53 PM Edit   Reply   Quote Quick Reply   Saw these last night under abysmal transparency. Very nice, and thanks for the head's up! -------------------- Supercharged ETX-125PE Meade 4000 Super Plossls One Lonely Nagler 16mmT5 10X50 Nikon Binos Phenix City AL Clearsky Clock Post Extras:       Pages: 1 | 2 | (show all) Previous   Index   Next   Threaded   Extra information 0 registered and 1 anonymous users are browsing this forum. Moderator:  EdZ, RLTYS  Print Thread Forum Permissions       You cannot start new topics       You cannot reply to topics       HTML is disabled       UBBCode is enabled Thread views: 3890 Jump to *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   Pets   Cloudy Days & Microscopes   Gardening   Audiophiliacs   Cameras & Photography   AstroWebsites*Speciality Forums* -----   AstroArt   Astronomy Software & Computers   Stellar Media   Astro Outreach, Clubs and Star Parties*CN Feedback and Vendor Announcements* -----   CloudyNights Feedback   Vendor and Group Announcements*International Year of Astronomy 2009 - Forums are now closed.* -----   Global Coordination   Cornerstone Projects   Special Projects   Special Task Groups   Global Activities   National and Regional Activities   IYA 2009 in Africa   IYA 2009 in the USA CN Forums Home

Cloudy Nights Sponsor: Astronomics