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 was taken with a ToUcam attached to my LX200 on 5th June 2006 at 18:03 UT, when the Moon was 9.0 days old. The scale markers are approximately 100 Km north and east. Date and Time: 5th June 2006 18:03 UT Camera: ToUcam 740K Telescope: LX200 with IR-pass filter Capture: K3CCDTools. Low gamma, 1/33". gain 22%, 620 frames Processing: Registax. 87 frames stacked. Wavelet 1-2 = 10, gamma 1.4, histogram 50-200

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 20:10 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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