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Mars 2018 July 04

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About this observation
Observer
David Arditti
Time of observation
04/07/2018 - 01:58
Object
Mars
Observing location
Edgware, Middlesex, UK
Equipment
14" SCT
Grasshopper 3 camera
Astronomik 742nm IR filter
Dispersion corrector
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Hellas and Syrtis Major are prominent in this view, and the dark areas N of the S Polar cap around L=300 are striking.

In taking this image, I took three videos of 120 seconds, collecting a total of 135,000 images. I stacked the best 40% of these, i.e. 54,000 images in total. The three batches were stacked and enlarged by drizzle in Autostakkert!, sharpened in Registax, and then combined by derotation in WinJUPOS. The final result was sharpened slightly more in Photoshop, but received no other processing.

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