Saturday, July 15, 2006

 

Phases

Last month I digiscoped the full moon. Last night with the moon waning I took some more shots to see the effect of a different lighting angle on the craters.

Craters are more evident in this image, especially near the twilight zone, than in the full moon image with the light shining from directly above.

Click for larger image
Waning moon, click for larger image.

This is a crop from the upper-middle of the previous image. At lower left, the crater with the obvious center peak is 100 km across and is called Theophilus. The white line at upper left is the Montes Apenninus mountain range. Once again, craters are much more evident with the sun hitting the craters at an angle rather than from directly overhead.

Click for larger image
Detail of previous image, click for unresized 1024x768 crop.

It was as clear yesterday in the Northeast as it has been in weeks so I also took a look at the sun. The regular solar filter showed no sunspots large enough to notice, so I'm not going to post any of those images. The Coronado PST showed just a few small prominences. I've given up trying to find the right gadgets that will let me do photography through the PST.


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