Humboldt Home

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

This is the far south-east and is east of my picture of the southern highlands.  The largest crater, right by the terminator, is Humboldt, 213 Km in diameter.  Although it is not apparent here, Humboldt is an example of a floor-fractured crater and would be a stunning view if it were more favourably placed.  The libration was extremely favourable at 5° 21' in longitude and -4° 32' in latitude, so the crater is about as well displayed here as it ever is.  Another floor-fractured crater is Petavius, 182 Km in diameter, 3300 meters deep with central mountains rising to 1700 metres.  The floor is crossed by a series of rilles, the most obvious one, running from the central mountain to the western wall, is clearly visible here despite the unfavourable lighting.  A clearer picture of Petavius is shown here.
The scale markers are approximately 100 Km north and west and apply at Petavius.
The picture was taken with a ToUcam attached to my LX200 on 16th November 2005 at 20:45 UT, when the Moon was 15.5 days old.

Date and Time 16th November 2005 19:27 UT
Camera ToUcam 740K
Telescope LX200 at prime focus with IR-pass filter
Capture K3CCDTools. Low gamma, 1/33", 0% gain, 607 frames
Processing K3CCDTools. 75% of frames stacked, histogram 0-160, unsharp mask 5,0,100
		Home      Back to SE Quadrant