Two pairs of Gemini!

[astroavani]

An interesting photo because there are two pairs of famous twin craters that can be seen in the same photo.
At the top rigwn twins, pairs, doubles, and triplets (observed by binoculars and telescopes of small, medium and large diameters).
• Ariadaeus and A. Simultaneous formation;
• Beer and Feuillée a famous pair. An unnamed catena runs east-southeast of Beer.
• Draper and Draper C in Mare Imbrium near the Carpatus Mountains are observed by ordinary telescopes.
• Eratosthenes A and B (south of Wallace) are seen on larger telescopes.
• Gambart B and C views on medium-sized telescopes. Gambart C was called Moreux by F.C.Lamech.
• Lichtenberg AA, at 29 ° North / 63 ° 20 'West observed in common telescopes and larger openings.
• Messier and Messier A (formerly known as W.H. Pickering), is the most famous pair on the lunar surface. Not exactly twins, because one of them is elliptical.
• Secchi Ae B; Smithson (formerly Taruntius N) and Taruntius O, northeastern Mare Fecunditatis (Sinus Successus) are seen in medium and large aperture instruments.
• Taruntius K and P, on the Dorsum Cayeux observed by medium telescopes.
• Carmichael and Hill, near Sinus Amoris. An interesting pair for small and medium telescopes.
• Helicon and Le Verrier. A famous pair in Mare Imbrium, near Sinus Iridum. Observable by small telescopes and binoculars.
• Ritter and Sabine, on the southwest edge of Mare Tranquillitatis. An interesting pair for small and medium telescopes.
• Ritter B and C. These are two bowl-shaped craters north of Ritter (they were almost recorded in this photo where only Ritter C appears). Among them is a small crater which is a good object for testing the telescope optics.
And now, will we pay more attention to the twin craters on our next lunar observation? It depends on you.
Source: Lunar Observation Guide - Rosely Gregio
Adaptation: Avani Soares
http://www.astrobin.com/271715/

[Ruud]

Thanks Avani, it's an excellent image. My first 'pair' were Atlas and Hercules, in 7x50 binoculars. That was when I was twelve. They still seem like brothers to me, sitting together in the grazing light that falls on them when the Moon is young.

 

[michael.h.f.wilkinson]

Superb detail as ever!

[astroavani]

Thanks colleagues!