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Mars, November 7th 2020...


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This is a dodgy GIF made from half a dozen of so images of Mars I collected on the exceptionally soggy and fireworky evening of last Saturday (it runs if you click on it)...

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For each contributing image I shot 1000 or so frames using an ancient Toucam Pro and a C9.25 with a x2 barlow.  I stacked the best 100 of each run in an equally ancient edition of Registax.  The result (sort of) shows the rising of Syrtis Major over the eastern limb, between 18.30 and 20.00.

I am no planetary imager and I had forgotten how hard it is to get good planetary images. The seeing looked pretty good to me, yet the image was bouncing around the PC screen like a demented ping pong ball, making manual focussing a hit and miss affair. The results were pretty blurred, but they do show large-scale detail:  I matched up an image gathered at 19.30 with the BAA Mars map of the same time and most of the features are recognisable, if not exactly clear...

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I had to pack up at around 8, partly because the flashing and banging fireworks were driving me up the wall, and partly because the fog was drawing in, condensation was dripping off of everything and I was worried about the electrics!

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Thanks everyone for the positive comments. I would still like to know how experienced planetary imagers get some of the staggeringly detailed images I have seen. I appreciate that the Phillips TouCam/Registax v2.1.14 combo is hardly state of the art these days, but is a small pixel/high frame rate CMOS camera the secret of sharp planetary images? Or is it just down to luck with the conditions?

I have every confidence in my old Celestron 9.25, it is optically excellent and a breeze to collimate. I should get more use out of it than I do.

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Posted by: @Hallingskies

Thanks everyone for the positive comments. I would still like to know how experienced planetary imagers get some of the staggeringly detailed images I have seen. I appreciate that the Phillips TouCam/Registax v2.1.14 combo is hardly state of the art these days, but is a small pixel/high frame rate CMOS camera the secret of sharp planetary images? Or is it just down to luck with the conditions?

I have every confidence in my old Celestron 9.25, it is optically excellent and a breeze to collimate. I should get more use out of it than I do.

Nicely done.

I find I get best results with:

Spot on focus.

Atmospheric Dispersion Corrector.

Good quality barlow.

Decent but not ridiculously expensive colour camera (ASI120MC).

Excellent seeing.

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