Boussingault Crater (Bruce Rohrlach)

Contains: Solar system body or event

Boussingault Crater

Acquisition type: Lucky imaging

Boussingault Crater

Acquisition type: Lucky imaging

This is from last nights imaging session, later in the evening around 11 pm when the moon was higher (43 degrees) above the horizon, and I manged to luck in with a 2 minute interval when the atmospheric turbulence briefly settled. Image created from a stack of 1000 frames extracted from a 3241 frame 2-minute astronomical video cam sequence. Being just a day past the full moon, the terminator (the line that divides dark from light, or the line that demarcates sunset on the waning moon) lies very close to the eastern edge of the disc, thus enabling a perspective view of several craters beind each other receding around the limb of the moon, and which have long-shadows (the sun is setting here in the field of view at this time) that accentuates the topography.

This is on the heavily cratered southeast limb of the lunar disc.

Principal craters are Boussingault (French chemist), Helmholtz (German physician and physicist), Neumayer (German polar explorer and scientist), Boguslawsky (German astronomy professor and observatory director), and Hagecius (Czech naturalist and astronomer in the Kingdom of Bohemia).

Boussingault is unusal in that it has an internal crater that is wholly contained within an outer crater (2 separate impact events) giving it a double-walled appearance.

Skywatcher 8 inch/f5, Televue 5x (effective focal length ~7000mm).

Image processing - Autostakkert, Registrax, Lightroom, Topaz Denoise, Canvas.

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