Plato
and Alpine Valley
December
19, 2007
Uploaded
2/3/08
North is up in this image, more info below.
Another image from this evening, where
the seeing was sometimes actually pretty decent. This over the
limb spaceship type view is dominated by the 60 mile in diameter
walled plain Plato, just to the left of center. Several tiny
craterlets can be seen inside which is certainly a test for a
better night. The mountain range across the center of this image
is Montes Alpes, with some peaks reaching over 7300 feet. On
the right side is the large gash like valley, Vallis Alpes or
more commonly known as the Alpine Valley. It is 80 miles long
but only 7 miles wide. You can just see hints of the central
quarter of a mile wide rille on its floor, indicating that I'm
certainly approaching under half an arc second resolution in
this image.
Processing: 300/1000
best frames, MAP 55 alignment in Registax, Wavelets in PixInsight
Pro, Levels and Contrast Masking In Photoshop CS3, Focus Magic
Plugin.
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Instrument: 12.5" f/5 with 1.8x Barlow
Platform: Astrophysics AP1200
CCD Camera: Image Source DMK 31AU03.AS
Filter: Hoya R72
Exposure: 1/60 sec 15fps
Location: Payson, Arizona
Elevation: 5150 ft.
Sky: Seeing good, Transparency 8/10
Outside Temperature: 35F
Processing: Registax, PixInsight Pro, Photoshop CS3, Focus Magic Plugin
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