Mars Oct 26, 2005

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click here for 100% size

 

About this Image

Mars again a few days before opposition. The apparent size now is 20.1".
A dust storm has developed on the other invisible hemisphere, in the northern pole area some blue clouds are visible. Top image at f/20, bottom image at f/30

North is up.

 


Technical Details
Optics

16" cassegrain in secondary focus at f/20 (top), f/30 (bottom)

Mount MK-100 GEM
Camera Firewire webcam Imaging Source DMK21BF04, manual filter wheel
Filters Astronomik 1,25" IR-pass 740nm, G, B
Date Oct 26, 2005
top: 22h57 UT; bottom: 23h12 UT.
Location Wildon/Austria
Sky Conditions mag 5 sky, fair to good seeing;, temperature 10 C
Exposure 1/30 sec, 30 fps, approx 2500 frames per color
Processing Image aquisition in IC-Capture, further processing in Registax 3, resize 150% for f/20; selection rate 30%, color combine, balancing, curves, unsharp mask in Photoshop CS;