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Old 19-06-2020, 10:09 PM
foc (Ross)
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Europa chases its shadow

June 19 1-4am Celestron C8 on EVO with ZWO 224mc and 2.5x powermate

Shooting through high and intermittently thickening cloud, though with some variability that occassionaly gave better captures. Jet stream supposedly about 30m/s so not terrible but not brilliant.

I think Saturn was a bit less effected by the conditions. Jupiter is a bit dulled (I boosted contrast a bit) and loses detail towards the edges but the central region is still quite interesting, with the first image showing approaching Europa and a bright GRS and the second image shows a faint but blurred Europa moving across Jupiter after its shadow.

Mars at 10" shows it ice cap reasonably as well as some albedo markings that are a bit faint to confidently assign.
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Click for full-size image (2020-06-18-1510_0-L-Sat_ZWO ASI224MC_Gain=431(off)_Exposure=10.png)
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Click for full-size image (2020-06-18-1801a_0-L-Mars_ZWO ASI224MC_Gain=353(off)_Exposure=1.png)
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Old 19-06-2020, 10:46 PM
Saturnine (Jeff)
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Excellent images of the planets, very well done, Saturn may be a little bit dark but overall a nice set. SCTs' are not supposed to be that good for fine planetary detail but yours seems to contradict that notion.
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Old 20-06-2020, 09:41 AM
Quopaz (Nick)
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Getting some good detail there.
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Old 20-06-2020, 11:08 AM
foc (Ross)
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Thanks for the feedback Jeff and Nick.

I often find it tricky to judge brightness on a posted image so I will retry the two dimmer images.
Jeff, I have found that many scopes can give you decent images if you get good seeing, reasonable collimation and can manage thermals. Smallish scopes are less trouble to put out more often. I have previously posted images with a ETX-105, a C6 and now a C8. Unfortunately good seeing is not common in many locations so you have to try often as indeed I see you do. This seeing was just on the good side of moderate.

As I have brightened up Saturn as per your suggestion...it might show it s flaws clearer! and I put a location guide next to Mars for anyone who wants to stretch their imagination.
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