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Lateest Jup image

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18 years 6 months ago #29187 by daveg
Lateest Jup image was created by daveg
Hi Folks

Latest Jupiter image below. Nothing as exciting as DaveL's animation and heck it's not even in color!



CG11 f/22 IR pass filter 314 frames out of 574

DaveG

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18 years 6 months ago #29200 by albertw
Replied by albertw on topic Re: Lateest Jup image
Nice image. Looking at Daves animation got me thinking. What is the time limit of how long you can take an avi of Jupiter for before the planets fast rotation period (9hrs 55mins) starts to cause a blur on the stacked image? Have you ever found yourself throwing out some avi frames due to this?

Perhaps its not really an issue, just curious!

Cheers,
~Al

Albert White MSc FRAS
Chairperson, International Dark Sky Association - Irish Section
www.darksky.ie/

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18 years 6 months ago #29207 by daveg
Replied by daveg on topic Re: Lateest Jup image
Thanks Al

At the resolution of the TUC Pro its about 90-100secs. So the key then is to cram as many frmaes as possible. With TUC normally best you'll get is 10fps = 1000 frames

DaveG

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18 years 6 months ago #29221 by dave_lillis
Replied by dave_lillis on topic Re: Lateest Jup image
This ia a question that I found myself pondering also,
If you go a 5fps and you want 1500 frames, the detail is most definitely smeared, the moon disk and shadow also become smeared.

My best images are all between 10-20 fps, not ideal, then again you can go and get a proper planetary camera costing you over a grand that'll do 30fps with no losses, remembering that the toucam looses frame detail at > 5fps. :(

if you look at the animation very closely, you can tell which were the 5fps imsges.

Nice image BTW Dave.
Do you not mean the IR blocking filter, as in blocks IR and lets visible in?

Dave L. on facebook , See my images in flickr
Chairman. Shannonside Astronomy Club (Limerick)

Carrying around my 20" obsession is going to kill me,
but what a way to go. :)
+ 12"LX200, MK67, Meade2045, 4"refractor

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18 years 6 months ago #29236 by daveg
Replied by daveg on topic Re: Lateest Jup image
Thanks Dave

No as I said on another thread IR PASS blocks RGB and hence you dont get the blurring effect caused by bad seeing (RGB coming to a different focus). The only prob is that its b/w, I'm waiting on a ATK color filter wheel to do some LRGB imaging. I've tried using the cam on its own as the RGB channel but thyre not great.

DaveG
PS
Remember that fps and NOT exposure is the key to trapping the seeing, thats why you get better results at 15 or 10fps. Of course the only prob hi fps is more noise

DG

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18 years 6 months ago #29245 by dave_lillis
Replied by dave_lillis on topic Re: Lateest Jup image
So this filter only lets through infrared, no visible, thats an interesting approach, and if the seeing was good is there still an advantage to using this method, is the IR jupiter exactly the same as the visible in terms of surface features, would make for an interesting side by side image.

Dave L. on facebook , See my images in flickr
Chairman. Shannonside Astronomy Club (Limerick)

Carrying around my 20" obsession is going to kill me,
but what a way to go. :)
+ 12"LX200, MK67, Meade2045, 4"refractor

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