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Old 21-10-2020, 10:57 AM
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Retrograde (Pete)
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Mars with the MN190

Hi all,

This is likely my best planetary image to date. Thanks to Andrew, Marc and others who've been providing tips on the forum on how to optimize planetary captures.

The seeing was quite good last night but a large band of cloud came over so I called it quits around 10pm so Mars was still a way from its highest elevation. Better seeing made it much easier to obtain good focus and I used a smaller ROI and moved it around in Sharpcap when the disk started to move out of frame.

This is a stack of the best 4500-odd frames out of 20,000 captured using the 190mm Mak-Newt, 4 x Powermate and an ASI-120-MC.

Really pleased with the performance of the MN190 and that I have something decent to show from this year's opposition.

*Edit* repro after using Winjupos to derotate 6 stacks added (2nd image)
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Click for full-size image (Mars_ISS1.jpg)
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Last edited by Retrograde; 28-10-2020 at 10:42 AM.
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Old 21-10-2020, 11:24 AM
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h0ughy (David)
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Really great detail there nice results
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Old 21-10-2020, 11:28 AM
Saturnine (Jeff)
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Ooohh, that is nice, well captured.
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Old 21-10-2020, 11:46 AM
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multiweb (Marc)
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Got to be in it to win it! Top shot Pete
Had a look up around 22:00 and it was still cloudy here so went to bed
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Old 21-10-2020, 11:51 AM
glend (Glen)
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Great shot Pete. Got to love the MN190.
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Old 22-10-2020, 09:39 AM
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rustigsmed (Russell)
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nice shot Pete - MN190 doing a great job!
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Old 22-10-2020, 11:18 AM
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Retrograde (Pete)
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Quote:
Originally Posted by h0ughy View Post
Really great detail there nice results
Thanks David!

Quote:
Originally Posted by Saturnine View Post
Ooohh, that is nice, well captured.
Thank-you Jeff I'm very pleased with it.

Quote:
Originally Posted by multiweb View Post
Got to be in it to win it! Top shot Pete
Had a look up around 22:00 and it was still cloudy here so went to bed
Thanks mate!
After I packed everything up I looked outside and it was mostly clear again
Still I was glad to have grabbed some images.
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Old 22-10-2020, 11:22 AM
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Retrograde (Pete)
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Quote:
Originally Posted by glend View Post
Great shot Pete. Got to love the MN190.
Thanks Glen!
Yep I love the MN190 - hopefully you don't miss it too much and you can be assured it went to an appreciative new owner.

Quote:
Originally Posted by rustigsmed View Post
nice shot Pete - MN190 doing a great job!
Thank-you Russell. Yep very pleased with its abilities for only 190mm aperture. Most of the issues so far have been with the operator
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Old 24-10-2020, 01:24 AM
Quopaz (Nick)
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Nice pic, well done. I've noticed it improves a fair bit from 10pm to 1am, but then Syrtis Major rotates toward the edge too.
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Old 28-10-2020, 10:39 AM
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Retrograde (Pete)
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Nice pic, well done. I've noticed it improves a fair bit from 10pm to 1am, but then Syrtis Major rotates toward the edge too.
Thanks Nick!
Hopefully the phase will change enough for you to get it before Mars gets too small.

I've had a play with Winjupos (don't really know what I'm doing) and derotated 6 stacked images from the evening. There's a bit less noise I feel but not sure about any extra detail.
I've also played with the colour balance a little in post. (Have added the image to the top of the thread too.)
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Last edited by Retrograde; 28-10-2020 at 04:24 PM.
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Old 28-10-2020, 12:19 PM
Saturnine (Jeff)
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The re-processed de-rotated image looks pretty smooth but as you said no obvious gain in detail.
The only critique I would venture is the orientation of the disc, lying on its side. I think it is easier to make sense of the martian features when the polar cap is at the top of the image. In other words the polar axis is vertical .
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Old 29-10-2020, 11:04 AM
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Retrograde (Pete)
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Quote:
Originally Posted by Saturnine View Post
The re-processed de-rotated image looks pretty smooth but as you said no obvious gain in detail.
The only critique I would venture is the orientation of the disc, lying on its side. I think it is easier to make sense of the martian features when the polar cap is at the top of the image. In other words the polar axis is vertical .
Looking again I believe that the small spot off to the right of the end of Syrtis Major, Nodus Alcyonius, came up a bit better than in the original.

As for the orientation - noted
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