Stevinus

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

Mare Imbrium This is an area in the southern highlands with lots of interesting features.  It includes the Rheita valley which is a long valley, probably formed by a string of craters, starting at Rheita in the north and extending south through Young and Young D and finally out of the picture.  The large crater Petavius at the top of the picture is bout 3,800 million years old and 180 km in diameter with walls rising to 3300 metres (although the lighting here does not show this well).  Well shown, though, is one of several rimae that cut across the otherwise flat floor; this one extending from the foothills in the south-west to the 1700-metre high central mountain.  The feature Rheita E intrigues me; it appears to be a long, narrow valley but it carries only the crater designation Rheita E.  Stevinus and Snellius form a nice pair;  Stevinus is much the younger of the two at no more than 1,000 million years compared with 3,900 million years for Snellius.

The scale markers are approximately 100 Km north and east and apply in the region of Funerius.
The picture was taken at 19:07 UT on 14th March 2005 with my EXT125.
Date and Time 14th March 2005 19:07 UT
Camera ToUcam 740K
Telescope ETX125 at prime focus
Capture K3CCDTools. high gamma, 1/100", 36% gain, 321 frames
Processing Registax. 242 frames stacked. Wavelets 1,2 = 10 and 3 = 5
Slight sharpening of the image in PhotoImpact.
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