You are not logged in. [Login] Entrance · Main Index · Search · New user · Who's Online FAQ · Calendar Observing >> Lunar Observing Previous   Index   Next   Threaded   Pages: 1 revans scholastic sledgehammer Reged: 09/26/05 Posts: 811 Loc: Fitchburg, MA Ptolemaeus       #2376765 - 05/07/08 06:20 AM Attachment (45 downloads) Edit   Reply   Quote Quick Reply   Usually when I imaged Ptolemaeus in the past I didn't capture very many small craterlets, but last lunar cycle I got more than is usual for me. I used the Mewlon 250 at FL=6000. The image is attached... I'm not sure what the diameter of the smallest is. -------------------- Rick Evans http://www.freewebs.com/revans_01420/ Post Extras:       Mare Nectaris Pooh-Bah Reged: 03/09/08 Posts: 1114 Loc: Toijala, Finland Re: Ptolemaeus [Re: revans]       #2377848 - 05/07/08 02:53 PM Edit   Reply   Quote Quick Reply   Wow Rick - that is a nice catch! I think Mardi can help with this... calling Whitepeak! Be well! -------------------- Share - and you shall have it all Timo Keski-Petäjä CtheMoon Observation shelter KuuMaja (MoonHut) TAL 250K*Celestron C8-N*SkyWatcher Skymax 150 Pro*TAL1(Mizar)*EQ6 Pro SynScan*Celestron Advanced GT (CG-5 GOTO)*Baader Hyperion Clickstop Zoom 8-24*17 mm UWA-70*TeleVue BIG 2x Barlow*Celestron 2x Barlow Ultima SV Series Post Extras:       larrytOMC200 sage Reged: 07/05/07 Posts: 222 Loc: New Zealand Re: Ptolemaeus [Re: revans]       #2379354 - 05/08/08 01:55 AM Edit   Reply   Quote Quick Reply   Rick, That is a cracking shot. I really like the small details you have pulled out with that one. Thank you for sharing with us. Keep well. Larry Post Extras:       revans scholastic sledgehammer Reged: 09/26/05 Posts: 811 Loc: Fitchburg, MA Re: Ptolemaeus [Re: Mare Nectaris]       #2379485 - 05/08/08 05:54 AM Edit   Reply   Quote Quick Reply   Timo, I tried to do a quick measurement of the smaller craters based on Ammonius being 9 km in diameter according to Rukl. I get just a sliver over 1 km... maybe about 1.1 or 1.2 km for the smallest craterlets when measured on my higher resolution image. I also checked an Apollo image of Ptolemaeus posted by Stephen Lammel in the LPOD gallery. -------------------- Rick Evans http://www.freewebs.com/revans_01420/ Post Extras:       ducatirob professor emeritus Reged: 06/15/05 Posts: 537 Loc: Centerville, Ohio Re: Ptolemaeus [Re: revans]       #2384538 - 05/10/08 02:15 AM Edit   Reply   Quote Quick Reply   Rick, Very nice photo ,super sharp. Thanks for sharing. Rob -------------------- C6-R /Atlas EQ Meade AR-5 Meade 90mm refractor 10x50 binoculars 15x70 binoculars Post Extras:       kfred Carpal Tunnel Reged: 11/11/03 Posts: 2005 Loc: Dayton, Ohio Re: Ptolemaeus [Re: ducatirob]       #2384597 - 05/10/08 04:11 AM Edit   Reply   Quote Quick Reply   Very nice... Fred -------------------- River Cam - Cambridge England Post Extras:       Pages: 1 Previous   Index   Next   Threaded   Extra information 2 registered and 3 anonymous users are browsing this forum. Moderator:  desertstars  Print Thread Forum Permissions       You cannot start new topics       You cannot reply to topics       HTML is disabled       UBBCode is enabled Thread views: 280 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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