· Get a Cloudy Nights T-Shirt · Submit a Review / Article Click here if you are having trouble logging into the forums 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 Astrophotography and Sketching >> Sketching Previous   Index   Next   Threaded   Pages: 1 frank5817 Postmaster Reged: 06/13/06 Loc: Illinois Craters: Phocylides and Nasmyth       #3253941 - 08/04/09 05:29 PM Attachment (49 downloads) Edit   Reply   Quote Quick Reply   As the moon approaches full phase the sun will eventually rise on the well known triple crater group: Phocylides, Nasmyth and Wargentin. The 117 kilometer diameter walled plain crater known as Phocylides is situated south southwest of the more famous impact remnant known as Schickard (233 km.). At the time of my observation and sketch the terminator was crossing over Phocylides and presenting an impressive view for an attempt at a quick sketch. This ancient formation (Nectarian) was just beginning to catch sunlight on its inner western wall. The crater looked much larger than usual because hidden in that darkness is also crater Nasmyth (80 km.), its far western wall also illuminated but not its floor, central peak or common wall with Phocylides. When at higher sun it is easy to tell that Nasmyth is the older crater since the wall of Phocylides intrudes into Nasmyth at their common divide. There is a third member to this group and it is an interesting crater with lava filling it to the brim. It is crater Wargentin (87 km.) but unfortunately it remained hidden during the entire observation. Sketching: For this sketch I used: white sketching paper 12”x 10”, HB, 4B, 6B graphite pencils, a blending stump. After scanning, Brightness was decreased (-2) and contrast increased (+2) using Microsoft Office Picture Manager. Telescope: 10 inch f/ 5.7 Dobsonian and 6 mm eyepiece 241x Date: 8-3-2009, 3:00 - 4:00 UT Temperature: 22° C (72° F) clear, breezy, 70% humidity Seeing: Antoniadi III Colongitude 56.4° Lunation 12 days Illumination 93 % Frank McCabe Edited by frank5817 (08/04/09 05:32 PM) Post Extras:       rodelaet Post Laureate Reged: 04/28/06 Loc: 50°56' N - 4°58' E (Belgium) Re: Craters: Phocylides and Nasmyth [Re: frank5817]       #3254008 - 08/04/09 06:01 PM Edit   Reply   Quote Quick Reply   Frank, I was waiting for a post with a sketch from your hand. It's amazing how you transform the white sketching paper into a sunlit moonscape. Wonderful work. Post Extras:       frank5817 Postmaster Reged: 06/13/06 Loc: Illinois Re: Craters: Phocylides and Nasmyth [Re: rodelaet]       #3254048 - 08/04/09 06:13 PM Edit   Reply   Quote Quick Reply   Rony, Thank you very much. I get a little antsy when I can't get out and try to sketch for a week or more. Frank Post Extras:       kraterkid Post Laureate Reged: 03/07/05 Loc: Jacumba, California Re: Craters: Phocylides and Nasmyth [Re: frank5817]       #3254172 - 08/04/09 06:59 PM Edit   Reply   Quote Quick Reply   Frank, a superb pencil sketch and observation report of Phocylides and Nasmyth! This area is a challenge to sketch because besides being highly foreshortened by it's position closer to the southern limb, the lighting can really be confusing sometimes. It might have something to do with Wargentin, it's such an odd full saucer. You've done an outstanding job with this one! Post Extras:       frank5817 Postmaster Reged: 06/13/06 Loc: Illinois Re: Craters: Phocylides and Nasmyth [Re: kraterkid]       #3254228 - 08/04/09 07:23 PM Edit   Reply   Quote Quick Reply   Rich, Thank you very much for those kind words. I was lucky to get this one in as clouds moved in and prevented any Jupiter observing and sketching for me. An upside to the location of these craters for sketching them on the terminator is that the terminator moves more slowly at these latitudes. Frank Post Extras:       Tom Machtemes super member Reged: 06/09/08 Loc: Evergreen Park, Ill. Re: Craters: Phocylides and Nasmyth [Re: frank5817]       #3255427 - 08/05/09 10:36 AM Edit   Reply   Quote Quick Reply   Frank, , for the nice sketch. , Tom Post Extras:       CarlosEH Postmaster Reged: 01/19/05 Loc: Pembroke Pines, Broward County... Re: Craters: Phocylides and Nasmyth [Re: Tom Machtemes]       #3255446 - 08/05/09 10:47 AM Edit   Reply   Quote Quick Reply   Frank, An excellent observation of Phocylides and Nasmyth. You have recorded this region very nicely. Thank you for sharing it with us all. Carlos Post Extras:       frank5817 Postmaster Reged: 06/13/06 Loc: Illinois Re: Craters: Phocylides and Nasmyth [Re: CarlosEH]       #3255466 - 08/05/09 10:55 AM Edit   Reply   Quote Quick Reply   Tom and Carlos, Thank you both for your kind words about my recent lunar sketch. Frank Post Extras:       rolandlinda3 Post Laureate Reged: 01/24/06 Loc: Crozet VA 22932 Re: Craters: Phocylides and Nasmyth [Re: frank5817]       #3256561 - 08/05/09 08:53 PM Edit   Reply   Quote Quick Reply   It's hard to get those way out there...nice job. Post Extras:       Special Ed Postmaster Reged: 05/18/03 Loc: Greenbrier Co., WV 38N, 80W Re: Craters: Phocylides and Nasmyth [Re: rolandlinda3]       #3256626 - 08/05/09 09:37 PM Edit   Reply   Quote Quick Reply   Nice pencil sketch, Frank. I always like to see those places deep in the terminator get lit up by the rising sun. I'm glad you could get this one done before the clouds came in. I hear you about getting antsy if you haven't sketched for a while--I'll bet several people share that feeling. Post Extras:       frank5817 Postmaster Reged: 06/13/06 Loc: Illinois Re: Craters: Phocylides and Nasmyth [Re: Special Ed]       #3256880 - 08/06/09 12:01 AM Edit   Reply   Quote Quick Reply   Roland and Michael, Thank you both for your kind words. Yes everyone that posts here gets antsy when it is cloudy and they can't sketch. It's even worse when it's clear and you can't sketch. Frank Post Extras:       Kris. Carpal Tunnel Reged: 09/16/04 Loc: Belgium Re: Craters: Phocylides and Nasmyth [Re: frank5817]       #3257432 - 08/06/09 10:53 AM Edit   Reply   Quote Quick Reply   a very nice moonscape Frank, i like the lighting angle on the small crater at the left of your sketch. i'm always struggling with getting the bright and dark areas right! Post Extras:       frank5817 Postmaster Reged: 06/13/06 Loc: Illinois Re: Craters: Phocylides and Nasmyth [Re: Kris.]       #3257485 - 08/06/09 11:27 AM Edit   Reply   Quote Quick Reply   Kris, Thank you. Yes me too. That little crater is 17km. Phocylides A. Frank Post Extras:       Shannon s sage Reged: 06/21/09 Loc: Bartow FL. Re: Craters: Phocylides and Nasmyth [Re: frank5817]       #3258058 - 08/06/09 05:52 PM Edit   Reply   Quote Quick Reply   Great sketch Frank. Man I can't get a break in the weather at all. Post Extras:       frank5817 Postmaster Reged: 06/13/06 Loc: Illinois Re: Craters: Phocylides and Nasmyth [Re: Shannon s]       #3258261 - 08/06/09 07:54 PM Edit   Reply   Quote Quick Reply   Shannon, Thank you much. Fighting with the weather - I think that is to give us time to pause and plan or next sketch. But you know.... I'm with you when the weather is bad. Frank Post Extras:       Tommy5 Carpal Tunnel Reged: 03/28/04 Loc: Chicagoland Re: Craters: Phocylides and Nasmyth [Re: frank5817]       #3258434 - 08/06/09 09:59 PM Edit   Reply   Quote Quick Reply   very nice sketch shows that thee is stuff to see when the moon is nearly full. Post Extras:       frank5817 Postmaster Reged: 06/13/06 Loc: Illinois Re: Craters: Phocylides and Nasmyth [Re: Tommy5]       #3258470 - 08/06/09 10:15 PM Edit   Reply   Quote Quick Reply   T5, Yes indeed, and even when it is full you have rays and bright crater rims. It just never stops.... unless it's cloudy. UGH! Thank you Tommy Frank Post Extras:       Pages: 1 Previous   Index   Next   Threaded   Extra information 0 registered and 5 anonymous users are browsing this forum. 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