High resolution detail of Vallis Rheita and friends (Niall MacNeill)

Contains: Solar system body or event

High resolution detail of Vallis Rheita and friends

Acquisition type: Lucky imaging

High resolution detail of Vallis Rheita and friends

Acquisition type: Lucky imaging

For my third imaging set on the day four of the recent new moon, I chose an area on the terminator, with many craters in deep shadow and particularly highlighting the magnificent Vallis Rheita. This image is south up so apologies to my Northern Hemisphere friends who may feel this is upside down!! It is a colour image (LRGB), with the Luminance coming from an IR 642nm BP image.

The Vallis can be seen running up from the bottom of the image and just left of centre and up to the left and is some 445kms long. It was apparently formed by the same mechanism as the nearby Vallis Snellius and both run radially from Mare Nectaris.

The 70km diameter crater Rheita is at the bottom of the image left of the Vallis.

Crater Young (72kms diameter) is transected by the Vallis, suggesting to me that it formed after the crater. Craters Young C and Young D to the right of the Vallis, as ears, give crater Young the look of Mickey Mouse's head, with the small crater Young A inside the rim of the main crater looking perfectly like his nose.

The deeply shadowed large craters at upper right are craters Metius (88kms) & Brenner (97kms) left and right and above them crater Fabricius (78kms), which has a couple of its central peaks just catching the Sun, sitting inside the rim of the very large crater Janssen (190kms). The scarred and pockmarked floor of this crater is brought out beautifully by the low angle of the sun's rays, with the deep clefts of some of the rille system, Rimae Janssen particularly visible.

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High resolution detail of Vallis Rheita and friends

High resolution detail of Vallis Rheita and friends

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High resolution detail of Vallis Rheita and friends

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