Lunar craters filmed through a telescope: Gassendi Letronne Billy. 3 craters.

These images taken by the astronomical telescope, we observe three distinct craters in a single frame: Gassendi (110 km) with the shape of the diamond ring, Letronne (119 km) because it resembles a horseshoe, and Billy (46 km ), which has dark floor at this stage, and so it is highlighted.

Craters mentioned here are located on the west side of the Moon, in a region of the northwestern Mare Humorum Basin.

These are frames from a video made off HD camcorder attached to the telescope.


Age of Moon: 11 days
Distance: 386 658
Phase: 85% (0% = New, 100% = Full)

Optical Telescope Celestron C8 "Newtonian, 20mm Plossl, 2x Barlow
Mount: CG5 (EQ5)
Device: Sony CX-130
Video Mode: Full HD 1920x1080 progressive
Filter: no
Date: 23/03/2013
Location: Baia Mare, Romania
Processing and editing: Sony Vegas 10 FastStone.

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View of Letronne crater on the Moon through telescope.

56 frames, 80% best quality in Registax.

Letronne  (119 km), is a horseshoe-shaped crater, similar to Julius Caesar (90 km) or Sinus Iridum. It is located on the southern Oceanus Procellarum, forming a bit of the edge of this huge basin.
Near the extremities of the "horseshoe" are some overlapping plates that extend for tens of kilometers, and they are called Dorsum Rubey (on left), and Dorsum Ewing (on right).
Letronne's floor is one without any noticeable craters. Just to the southeast is a small one called Letronne B. There is a crater over its western edge, called Winthrop (18 km).
In the center of Letronne, are three mountain formations.

Age of the Moon: 11 days
Distance: 386 658
Phase: 85% (0% = New, 100% = complete)

Optical Telescope Celestron C8 "Newtonian, plossl 20mm, 2x Barlow
Mount: CG5 (EQ5)
Device: Sony CX-130
Video Mode: Full HD 1920x1080 progressive
Filter: no
Date: 23/03/2013
Location: Baia Mare, Romania
Processing and editing: Sony Vegas 10

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Letrone and Billy craters

Photographer: Victor Lupu
Optics: Celestron C8-Newtonian reflector telescope, plossl 20mm, 2x Barlow
Mount: CG5 (EQ5)
Device: Sony HDR CX105
Filter: No
Date: 15/02/2011
Location: Baia Mare, Romania
Processing: video capture
        Letronne (119 km), is a remnant of a lava flooded crater. Northern part of the crater is completely missing, and it opens in Oceanus Procellarum, forming a bay along the southwest coast. This formation is located northwest of the crater Gassendi. Southwest is flooded crater Billy, and north-north-west lies Flamsteed.
         Billy (46 km), is a lunar crater at the south edge of Oceanus Procellarum. It is located southeast of similar-sized crater Hansteen (45 km), and south-west of Letronne.
Billy's interior has been flooded by basaltic lava, leaving a dark area due to low albedo. Remaining above the surface edge is narrow and low, with a thin inner wall.

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