MarsWatch 1996-1997

Images of Mars from Astronomers Around the World

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Linking Amateur and Professional Mars Observing Communities

for Observational Support of the Mars Pathfinder Mission

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Back to the MarsWatch Home Page

All images were obtained with a 60-cm telescope, CCD-camera ST-6V (SBIG) and magnifying filter block, which gives the equivalent focal length 12.3 m. The filters used at these observations are:

• UV - combination of two glass filters (ultraviolet and blue-green to cut infrared tail)
• 502 and 619 - interference filters with effective wavelengths 502 and 619 nm
• IR - combination of two glass filters (red and violet with IR tail).

The exposure times are 15, 4, 0.7, and 0.1 sec correspondingly. Mean approximate counts number are 10, 45, 35, and 40 thousands (65535 is the saturation limit). The temperature of CCD is -20 C with accuracy of about 0.01 degrees. The noise dark counts are 100-200.