Thebit and the Rupes Recta

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

Thebit is a small (60 Km) but deep (3,270 m) crater with steep walls supporting Thebit A to the north-west. Rupes Recta, also known as Huygen's Sword, is a fault 110 Km long and between 240 and 300 metres high. It is not a cliff but a steep slope, being 2.5 Km wide. The picture was taken with a ToUcam attached to my LX200 with X2 lens on 30th March 2004 at 2106 UT, when the Moon was 9.1 days old. Date and Time: 30th March 2004 21:06 UT Camera: ToUcam 740K Telescope: LX200 with X2 adaptor Capture: K3CCDTools. 50% gamma, 1/50", 0% gain, 462 frames Processing: Registax. 159 frames stacked. Wavelet 1-4 = 20 Contrast 50

This is a wider-angle view of the area around the Rupes Recta. It is a composite of two images taken with a ToUcam attached to my ETX125 on 15th July 2005 at 2010 UT, when the Moon was 8.5 days old. The scale markers are approximately 100 Km north and east. Date and Time: 15th July 2005 20:10 UT Camera: ToUcam 740K Telescope: ETX125 Capture: K3CCDTools. 0% gamma, 391 frames, infra-red light Processing: Registax. 73 and 59 frames stacked. Wavelet 1-3 = 10 Contrast 120, brightness -38

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