Jupiter with Mewlon 210 – single Frame vs 3,000 Frame Stack

[Dennis]

Using the Mewlon 210 F11.5 with a Tak x1.6 Extender I managed to get a reasonable image of Jupiter on 14th August despite the less than optimal seeing conditions, as clouds kept rolling in throughout the session, disturbing the imaging acquisition. Theoretically this should have been taken at 3864mm at F 18.4.

I used the on-line calculator at:

http://www.wilmslowastro.com/software/formulae.htm

to calculate the actual focal length of my system with the x1.6 Extender , which turned out be 3687mm at F17.56, which gives me a multiplication factor of x6 i.e. 17.56 / 2.9. (FL / pixels size in microns)

Cheers

Dennis

[Retrograde (Pete)]

Looks good Dennis - some nice detail on Jupiter despite the conditions.

Interesting calculator - I had a look at the "CCD Planetary Critical Sampling" section and put in my own MN190 scope and ASI120 camera details and it says I should be imaging at a minimum focal length of 3689mm for blue light (red and green were less). I use a TV 4 x Powermate to give 4000mm so I guess that's a little over-sampled but not too bad.

[Dennis]

Thanks Pete, the seeing conditions sure make a huge difference.

I tried for the satellite event of the century earlier this morning after the clouds had gone, but the seeing was atrocious.

Cheers

Dennis

EDIT: It looks like I am oversampling too, at the measured 3687mm/F17.56 vs the "recommended" 2936mm/F14.

[multiweb (Marc)]

Originally Posted by Dennis

Thanks Pete, the seeing conditions sure make a huge difference.

I tried for the satellite event of the century earlier this morning after the clouds had gone, but the seeing was atrocious.

Cheers

Dennis

Nice catch Dennis. Superb snapshot. You did a lot better than I. Very sharp and clear.

[Dennis]

Originally Posted by multiweb

Nice catch Dennis. Superb snapshot. You did a lot better than I. Very sharp and clear.

Hi Marc

Post #1 is from the 14th Aug when the seeing was slightly better, whereas the latest was from early this morning when the seeing was really quite poor.

Cheers

Dennis

[Dennis]

How does Autostakkert produce an image from this garbage input...

Cheers

Dennis