Purbach

Move your mouse over the picture to see the names of the various craters.

Purbach is an ancient crater, about 4,200 million years old, but must be younger than Regiomontanus to the south.  It is 120 Km in diameter and some 2400 metres deep.   Lacaille (spelt La Caille by the VMA) is 70 Km deep and almost 2800 metres deep, and the floor is remarkably flat for such an old crater.  Blanchinus is elongated, measuring 70 Km north-south and 55 Km east-west.  Although the floor is fairly flat it has a number of folds and small mountains.  Werner is a much younger formation at around 2,000 million years. Its inner details are hidden in this picture by the shadow of its 4200-metre walls. Thebit, at the top of the picture is close to Arzachel but there is no overlap with my picture of that feature so I was unable to add it to the mosaic. The picture was taken with a ToUcam attached to my LX200 with a X2 adaptor lens on 6th September 2004 when the Moon was 21.8 days old.

Date and Time	6th September 2004 04:43 UT
Camera	ToUcam 740K
Telescope	LX200 with X2 lens
Capture	K3CCDTools. High gamma, 1/50", 31% gain, 303 frames
Processing	Registax. 102 frames stacked. Wavelet 1,2 = 10

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