The sketch was done using the smaller scope because it is driven. I spent a 3 hour interval on this sketch but actual sketching time was more like 2 hours. At 373x using the 18 inch scope I could clearly see the floor of Palus Putredinis (The Marsh of Decay) and not far away Rima Hadley at the foot of Montes Apenninus. This was predicted so I had two telescopes outside (my 18 inch f/4.9 and 13.1 inch f/6 both Dobsonians). The atmosphere at sunset settled down to a Pickering 8/10 and 9/10 for brief intervals. Last evening proved to be a fine night for observing the Moon and the planets. Media: Graphite pencil on white paper Fabriano for sketches Posted on Author Jeremy Perez Categories crater, Graphite Pencil, Moon, White Paper 7 Comments on Triad of Craters Apollo 15 Landing Site Seeing:Perfect,not at the end cause Moon very low I see many shadow and particulars of surface……incredible show!! The image was perfect,still and my eies was concentrated to tryade of craters: Theophilus ,Cyrillus and Catharina. The sky was clear and i take my telescope and placed it on my roof in front my home. I return to asod with my last Moon sketch made with my old Refractor Kenko 80/1000. Hello Artist of the nightsky! How are you? i come after long time and many problems,in my family and out…. Junto a él, el cráter Chacornac ( 50,4km de diámetro) y al otro lado, el cráter Danielli ( 28 km diámetro).Īl oeste, la Dorsa Smirnov que es esa línea clara justo en el Terminador.Įl cráter Posidonius tiene un aire familiar que recuerda a Gassendi, tanto en tamaño como en fisonomía ( Gerald North: Observing the Moon)Īurelio Alcalde Posted on JJAuthor Jeremy Perez Categories crater, Moon 6 Comments on Posidonius Needle tip end of the crescent Moon Posidonius es un bonito cráter de 100 km de diámetro en el límite Este del Mare Serenitatis junto al Lacus Somniorum. Posidonius is somehow like Gassendi, ( Gerald North: Observing the Moon) To the West, the light line is Dorsa Sirnov.Īdjacent to Posidonius is crater Chacornac ( 54km Diam.) and on the other side, Danelli ( 28 km diam). at the East border of Mare Derenitatis, beside Lacus Somniorum. Hi folks, this is a sketch of the moon crater Posidonius.
Seeing: Variable, Antoniadi III(fair)-IV (poor)įrank McCabe Crater Davy – Labeled Posted on JJAuthor Jeremy Perez Categories Black Paper, Conté Pencil, crater, Moon 8 Comments on Crater Davy and its Crater Chain in Davy Y Posidonius Telescope 13.1” f/6 Dobsonian telescope on an equatorial drive platform at 332x with 6mm eyepiece Whitaker, Lunar and Planetary Lab, University of Arizona, Tucson, Az.īlack Artagain paper, white and black Conte’ pastel pencils, white Pearl eraser, blending stumps A paper published in 1994 by Melosh and Whitaker explains the hypothesis.Ĭrater Chains on the Moon: Records of Comets Split by the Earth’s Tides? H. As it went in on the moon like a train of meteors it would have created a chain of impacts. Whitaker believe that a comet (or asteroid) may be responsible as it broke up while inside the Earth’s roche limit. There is also no evidence of volcanic activity associated with this chain. Since it does not line up with any impacts of note it is not likely a sequence of secondary craters. It arcs across the floor and eastern rim of crater Davy Y (70 km.).
Crater Davy (35 km.) and the Davy crater chain (catena) were my targets for this evening of sketching and although the seeing and transparency were predicted to be above average that was not the case.
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