Orpington Astronomical Society
Astronomy => Astrophotography => Topic started by: Roberto on Sep 16, 2020, 16:34:49
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My first image of Mars in quite a while! Taken Monday dawn in above average seeing as the high pressure system moved over SE England. Details of the acquisition are at the link below:
https://www.astrobin.com/y1nltx/E/ (https://www.astrobin.com/y1nltx/E/)
It was imaged using a 10" f/20 Maksutov and a ZWO ASI462MC CMOS OSC camera at 142 frames per second. 1,500 frames stacked out of 30,000 taken.
I hope the seeing cooperates later in the month and into October for closest approach.
Roberto
(https://cdn.astrobin.com/thumbs/hdLHqEy2AwVE_1824x0_yOjrhbNM.jpg)
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I saw this on Astrobin. Great detail Roberto.
Carole
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Thank you Carole!
I managed to extract a little bit from the data (in my view but maybe I'm squinting...) and finished with the below:
(https://cdn.astrobin.com/thumbs/vZXWQXBhmM_i_1824x0_kZeHYKMo.jpg)
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The new version looks smoother.
Carole
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Excellent work Roberto, that AP Mak is a great scope.
May be I'm squinting as well but I also think there is a bit more teased out of the second image. I'll be trying Mars myself when I get back from hols.
Robert
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Thank you Carole, Robert. Robert it's a TEC Mak, I wish I had the AP! Enjoy your break 8)
Roberto
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That's a fantastic image. Lots of detail. The seeing must have been good.
Mark
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Thank you Mark - difficult to put a reference on seeing as I have not observed the planets in literally years because they are so low over the horizon. I would say it was above average. I'm hoping for equal or better conditions for early October when the planet will be more illuminated.
Roberto
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That is fantastic Roberto, the detail is amazing. Seeing must have been very good. I have done a lot of Mars images over the years and also intend to set up for planetary when I get home. My old Meade 8" SCT can't compete with this though and you've done a great job with the colour. Shame the other planets are at such woeful altitudes this year. Did you use an ADC?
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Thank you! Yes, I did have an ADC in the imaging train. There was some dispersion but it was easily corrected - some 5/7 px at that focal length (0.11”/px). Fingers crossed for good seeing - maybe some this weekend- and we can compare images!
Roberto
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Lovely picture Roberto
Good to see one of the planets back on the Forum!
Hugh
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Thank you Hugh! Yes, with Jupiter and Saturn so low, it’s nice to have Mars high(er) in the sky.
Roberto
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More Mars....
Taken early in the morning of 22 September. Same equipment but slightly better seeing:
(01:37UT - 7% of 30,000 - resized 150%)
(https://cdn.astrobin.com/thumbs/_RS5WLwJbbit_1824x0_Ld6lYopT.jpg)
(01:45UT - 5 frames de-rotated and stacked in WinJupos)
(https://cdn.astrobin.com/thumbs/UNk-645dPU5u_1824x0_yOjrhbNM.jpg)
(02:00UT - 3 frames de-rotated and stacked in WinJupos)
(https://cdn.astrobin.com/thumbs/KFVaonrUXwCg_1824x0_COnXzQFG.jpg)
Animation of the 5 frames from the second image:
(https://cdn.astrobin.com/images/5378/2020/cfb5a317-9450-465f-a70b-e3799add259c.gif)
What hopefully should be visible in the above...
(https://cdn.astrobin.com/thumbs/QFppJCmXCBRr_1824x0_kZeHYKMo.jpg)
Roberto
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Those are really excellent Mars images, great capture.
Robert
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Thank you Robert!
I added a bit of colour saturation to the last stack.
Roberto
(https://cdn.astrobin.com/thumbs/mJFFhFEPF1E6_1824x0_XMZ8qe_X.jpg)
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That last batch show some fantastic detail.
Carole
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Thank you Carole. I was surprised by that as the planet had crossed the meridian by then and seeing was not any better, at least on the monitor. I suspect I got something better out of it as the videos were shorter (20k vs 30k frames) and maybe details smeared less when stacking.
Roberto
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More Mars in no so good seeing...but after all this rain and clouds better than nothing. Taken on Thursday night:
(https://cdn.astrobin.com/thumbs/TU7w0MVugXva_16536x16536_LOFmXT2F.jpg)
Information here: https://www.astrobin.com/8fc2xh/G/ (https://www.astrobin.com/8fc2xh/G/)
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Great Result Roberto
Carole
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Thank you Carole! I put together an animation from the frames I took from 22:43 to 00:01.
Roberto
(https://cdn.astrobin.com/images/5378/2020/afde971a-08ea-4e95-ac2d-c02093ea8ecd.gif)
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Very good Roberto
And in motion too.
Noel
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Thank you Noel!
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The dreaded edge-rind effect became stronger and stronger since September.
More Mars in November:
3/11/20 - 21:55UT
(https://cdn.astrobin.com/thumbs/A9w_-O2UgUCg_1824x0_weuzSonx.jpg)
And a blurb of Phobos and Deimos:
(https://cdn.astrobin.com/thumbs/DW5gLT04Kczy_1824x0_XMa3dGG3.jpg)
And the next day, 5 November, at the same time:
(https://cdn.astrobin.com/thumbs/JTI7IBPTJs7P_1824x0_CtqCEXoG.jpg)
And what will possibly be the last hurrah of Mars this apparition as the weather deteriorates and planet shrinks, on 7 November at 20:58UT:
(https://cdn.astrobin.com/thumbs/KPwil5tpIosf_1824x0_weuzSonx.jpg)
Roberto
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Very nice Roberto. Shame some deity can't peel the rind off these planets :wall:
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Thank you! I have not tried to remove the effect by processing but did read Martin Lewis' update on it here: http://skyinspector.co.uk/mars-edge-artefact/ (http://skyinspector.co.uk/mars-edge-artefact/) Some study!
Roberto