· 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 Mid-Moon Craters       #3087762 - 05/06/09 01:10 AM Attachment (41 downloads) Edit   Reply   Quote Quick Reply   With the moon just past first quarter, many beautiful, deep craters near the center of the lunar-earth facing side standout in shadowed relief. Among those visible were the famous trio of Alphonsus, Ptolemaeus and Arzachel. During this observation I selected Arzachel (96 km.) and neighbor Alpetragius (41 km.) for sketching. Both of these craters were on display about 200 kilometers from the terminator shadow line. Arzachel is the southern most of the above mentioned trio. It is a lower Imbrium impact depression and in addition it is floor fractured. Central to the crater floor is a fine mountain projecting one and a half kilometers above the floor. Also on the floor of the crater is Arzachel A (10 km.) with light shimmering off its illuminated rim. Part of Rimae Arzachel was visible as a bright edge rille which partly paralleled the floor shadow cast by the northeastern rim. Alpetragius the smaller, older crater (Nectarian) has a very large round mountain covering most of the crater floor. Just the tip of this mountain was catching the first rays of morning sun as I began this sketch. Sketching: For this sketch I used: black Strathmore 400 Artagain paper 8”x 8”, white and black Conte’ pastel pencils and a blending stump. After scanning, Brightness was decreased (-2) using my scanner. Telescope: 4.25 inch f/10 equatorial and 6 mm at 180x Date: 5-3-2009, 0:50 - 1:40 UT Temperature: 13°C (55° F) hazy, high thin clouds, calm Seeing: Antoniadi III Colongitude 11.2 ° Lunation 7.9 days Illumination: 63 % Frank McCabe Post Extras:       kraterkid Post Laureate Reged: 03/07/05 Loc: Jacumba, California Re: Mid-Moon Craters [Re: frank5817]       #3088744 - 05/06/09 03:29 PM Edit   Reply   Quote Quick Reply   Absolutely astonishing sketch Frank! The detail of the terracing in the crater walls is gorgeous. Fantastic capture of the central peak and floor of Arzachel. Wonderful observing report! Post Extras:       Tom Machtemes super member Reged: 06/09/08 Loc: Evergreen Park, Ill. Re: Mid-Moon Craters [Re: frank5817]       #3088754 - 05/06/09 03:35 PM Edit   Reply   Quote Quick Reply   Frank, Very nice sketch, keep them comming. Tom. Post Extras:       rodelaet Post Laureate Reged: 04/28/06 Loc: 50°56' N - 4°58' E (Belgium) Re: Mid-Moon Craters [Re: frank5817]       #3089015 - 05/06/09 06:10 PM Edit   Reply   Quote Quick Reply   Beautiful and very crisp, Frank! So many details captured in this sketch, great work. Post Extras:       CarlosEH Postmaster Reged: 01/19/05 Loc: Pembroke Pines, Broward County... Re: Mid-Moon Craters [Re: rodelaet]       #3089211 - 05/06/09 07:52 PM Edit   Reply   Quote Quick Reply   Frank, A wonderful observation and report of Arzachel and Alpetragius. You have captured the layered walls and shadows very nicely. Thank you for sharing it with us all. Carlos Post Extras:       frank5817 Postmaster Reged: 06/13/06 Loc: Illinois Re: Mid-Moon Craters [Re: CarlosEH]       #3089319 - 05/06/09 08:36 PM Edit   Reply   Quote Quick Reply   Rich, Tom, Rony and Carlos, Thank you all for the kind words about my sketch of Arzachel/Alpetragius. It has been a long while since I had used this old telescope, after cleaning the optics I wanted to see what I could see. Frank Post Extras:       rolandlinda3 Post Laureate Reged: 01/24/06 Loc: Crozet VA 22932 Re: Mid-Moon Craters [Re: frank5817]       #3089359 - 05/06/09 09:00 PM Edit   Reply   Quote Quick Reply   very nice sketch, Frank, and makes me smile as I look at it. By the way, before we left on our trip I was pointing out your sketch of a crater (have it posted in our sky shed along with several other sketchers' works) and got the typical question: is that a photograph?? Of course, I answered in the negative and said that a sketch is better than a photograph!! Roland Post Extras:       JayinUT I'm not Sleepy Reged: 09/19/08 Re: Mid-Moon Craters [Re: rolandlinda3]       #3090116 - 05/07/09 08:52 AM Edit   Reply   Quote Quick Reply   Frank, Excellent! I like the contrasts in the craters of light and dark and your details are captivating. Post Extras:       frank5817 Postmaster Reged: 06/13/06 Loc: Illinois Re: Mid-Moon Craters [Re: JayinUT]       #3090159 - 05/07/09 09:28 AM Edit   Reply   Quote Quick Reply   Roland and Jay, Thank you both for your kind comments. I really enjoy astrophotos too but I find that I would rather browse astosketches for enjoyment the way you do Roland. Frank Post Extras:       Tommy5 Carpal Tunnel Reged: 03/28/04 Loc: Chicagoland Re: Mid-Moon Craters [Re: frank5817]       #3091454 - 05/07/09 09:20 PM Edit   Reply   Quote Quick Reply   Great sketch Frank, the lunar terminator is an exciting place to observe in both large and small telescopes, thanks for sharing. Post Extras:       frank5817 Postmaster Reged: 06/13/06 Loc: Illinois Re: Mid-Moon Craters [Re: Tommy5]       #3091745 - 05/08/09 12:08 AM Edit   Reply   Quote Quick Reply   T5, Thank you for those words. You are correct of course; it does not matter the size of the scope. Great views are possible along the terminator using any size scope. Frank Post Extras:       cildarith Carpal Tunnel Reged: 08/26/04 Loc: San Diego, CA Re: Mid-Moon Craters [Re: frank5817]       #3091775 - 05/08/09 12:40 AM Edit   Reply   Quote Quick Reply   Excellent report and sketch of Arzachel and Alpetragius, Frank! Post Extras:       frank5817 Postmaster Reged: 06/13/06 Loc: Illinois Re: Mid-Moon Craters [Re: cildarith]       #3091802 - 05/08/09 01:14 AM Edit   Reply   Quote Quick Reply   Eric, Thank you for your nice comments about my sketch and report. I really miss those lunar sketches you did a couple of years back in that pale yellow color. You will need to draw a few more of those when you get a chance. Frank Post Extras:       Pages: 1 Previous   Index   Next   Threaded   Extra information 0 registered and 8 anonymous users are browsing this forum. 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