Observation by Rik Hill: The Lunar "X"

Uploaded by

Richard "Rik" Hill

Observer

Rik Hill

Observed

2016 May 14 - 09:17

Uploaded

2018 Nov 09 - 06:32

Objects

The Moon

Equipment

3.5" Questar @ f/24.4 (internal barlow)
SKYRIS 445M camera + 656.3 filter

Location

Loudon Observatory, Tucson, Arizona, USA ( long. -110.77639 deg. W lat. +32.18025 deg.)

Target name

An "X" on the moon.

Title

The Lunar "X"

About this image

In the center of image is the flat bottomed 65km diameter crater Apianus. Just above it is the slightly smaller crater Playfair (49km), half in shadow here. Between them and slightly left (west) is the large 94km basin simply named Playfair G. To the lower left of Playfair are two large shadow filled craters. The lower one is the 82km Aliacensis, and to the upper left from that the 71km Werner. These two craters point right to the "X".

This interesting feature is formed from the walls of Purbach and Blanchinus which are largely in shadow except for the higher parts of their walls. Blanchinus is directly above Werner and Purbach immediately to its left.

Files associated with this observation

Apianus_2016-05-14-0217_QfinB.jpg (307.1 kB)

Like this image

Jeremy Shears, Andy Wilson, Neil Morrison, Geof Lewis, Martin E

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