Kepler to Grimaldi

December 28, 2007

Uploaded 2/3/08

South is up in this image, more info below.
1290 x 960
1290 x 960

 This pair of images were taken a day before full moon, and on the wider field prime focus image at left, spans from the brilliant white rayed crater Kepler on the lower left, to the small basin on the upper right terminator which is the crater Grimaldi. There are many ghost craters in this part of Oceanus Procellarum appearing as white incomplete rings buried in the lava.

The image on the right is with the 1.8x barlow, as much as seeing would permit. Riccioli just to the right of Grimaldi is just starting to catch the light on its rims.

Processing: 250/1000 best frames, MAP 35 alignment in Registax, Wavelets in PixInsight Pro, Levels and Contrast Masking In Photoshop CS3, Focus Magic Plugin.

Instrument: 12.5" f/5 prime and with 1.8x Barlow Platform: Astrophysics AP1200 CCD Camera: Image Source DMK 31AU03.AS Filter: Hoya R72 Exposure: 1/60 - 1/108 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