Crater Gassendi


This image was captured from video using a Panasonic Palmcorder coupled to a 26 mm eyepiece. Image contrast was enhanced.






A higher magnification image of the crater Gassendi and surrounding area. This image was captured from video on 8/3/98 using a video CCD module in eyepiece projection mode. The module was approximately 2 inches from a 26 mm eyepiece coupled to a 3x Barlow lens. Five separate images were combined to form the composite to the left. The composite was sharpened strongly, midtones were moderately lightened and shadow tones darkened slightly. The sky was unusually clear and the weather unusually cool and dry for an August night in central Virginia..





For comparison, the best single image of the 5 used for the previous composite. This image was sharpened moderately, mid and shadow tones were adjusted approximately as above.







A broader view of the Gassendi / Mare Humorum area captured using a CCD video module in eyepiece projection mode. The module was about 2 inches from a 26mm Plossl eyepiece. The image was moderately sharpened.






A view of the Gassendi / Mare Humorum area under a later lunar phase, a few days before full moon. The image was captured on 9/4/98 using the technique described above with the 26 mm eyepiece. Moderate sharpening and contrast enhancement were applied.







An image captured of the Gassendi area on 10/31/98 using the video technique described above. A 26 mm eyepice was used in eyepiece projection mode. A light sharpening algorithm was applied.









In the above image there is an interesting area to the west of the crater Gassendi within the crater Mersenius. The area is a light patch that appears in the portion of the crater that was shadowed at the moment the image was captured. It appears to be sunlight just striking some elevated terrain just within the crater rim.







A further enlargement.










Another interesting feature observed during the same session: A break in the ridge surrounding the crater Mersenius P, southwest of Gassendi. In this enlarged image sunlight can be seen passing through the break.