A few comments about this image: It was taken with a SBIG ST7 CCD Camera, mounted on a Celestron CG11. The working aperture was 70 mm, fl 5600mm, the filter was a Wratten 25.
These cropped images were taken in the maximum resolution mode with 9 micron pixels. This works out to 0.33 arcsec per pixel grossly oversampled. Seeing estimated to be about 2" of arc.
They were taken on April 25 1999, at 1:01:15 am EDT. At that time the CM of Mars was 205 deg. The polar axis was tilted 38 deg to the east. The Polar Axis is tilted 19 deg to the Earth. The image is correctly placed. i.e. not inverted. The prominent dark areas are Utopia to the north andMare Cimmerium to the South. The two small areas areAlcyonius and Stymphalius Lacus.
Enjoy!
Get out your Observers Handbook first! Or see pg.106 April 99 S&T