Observation by Chris Hooker: Extreme NW libration, 5th August 2018

Uploaded by

Chris Hooker

Observer

Chris Hooker

Observed

2018 Aug 05 - 02:45

Uploaded

2018 Aug 05 - 18:34

Objects

The Moon

Equipment

254 mm F/6.3 Newtonian
x2 Barlow
ZWO ASI120MM-S camera
Baader 610 nm filter

Exposure

1.5 msec

Location

Didcot, Oxfordshire

Target name

Moon

Title

Extreme NW libration, 5th August 2018

About this image

The NW libration was almost at maximum on the 4th and 5th of August. This image is cropped from a large mosaic (which is too large to upload). The large crater with the prominent peak complex is Pythagoras, which has been shifted well away from the limb by 7 degrees of libration in both latitude and longitude. The inset shows the most westerly feature that could be identified with certainty: the crater Zsigmondy A, which has a western longitude of 102.4 degrees, marked by the lines drawn next to the limb.

Files associated with this observation

Pythagoras2.png (1.5 MB)

Like this image

David Swan, Jeremy Shears, Ray Emery, David Basey, Chris Dole, Andrew Paterson, Geof Lewis, Peter Carson, Andy Wilson

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