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Jupiter and its moons
      #85182 - 04/05/04 12:05 PM Attachment (62 downloads)

Took this last night with my Canon 300D and XT6. Jupiter is a stack of 80+ shots and is pasted onto an overexposed shot that brings out the moons.

I am still working on trying to bring out more details on Jupiter. When I am stacking pics using Registax, should I lean toward (shorter exposure, high ISO 400-1600) or (longer exp, low ISO 100-200) The big issue is that without having the ability to track Jupiter it is flying across the frame so I cannot do too long of an exposure without blurring just from apparent motion.


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TeamGS
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Reged: 01/20/04
Posts: 3073
Loc: Elk Grove, CA
Re: Jupiter and its moons new [Re: ]
      #85233 - 04/05/04 01:44 PM

Excellent, especially considering that you have no tracking!

Generally, the lower the ISO, the lower the noise.

Are you using the continuous mode of your Rebel?

Regards,

Gary

--------------------
Celestron 80ED
Losmandy G11
NexStar 80
Starlight Xpress SXV-H9
SXV guidehead, ToUcam 840
http://www.teamgs.org/astrophotography.htm


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Charles
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Re: Jupiter and its moons new [Re: TeamGS]
      #85494 - 04/05/04 09:05 PM

Nice Bill!

Charles


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Anonymous
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Re: Jupiter and its moons new [Re: Charles]
      #85869 - 04/06/04 11:28 AM

Thanks for the comments!

I made a shutter control box out of an old Motorola pager body, stereo cable and 3 switches. I then set the scope up so that Jupiter starts at one side of the frame and as it moves across I snap pictures. With the near instantaneous response of the 300D I can wait for the best viewing (it was a little windy when I took these shots) before taking the shots. I can usually take 6-10 shots before having to move the scope. How many shots can I take before field rotation starts to impact image stacking using RegiStax?


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TeamGS
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Loc: Elk Grove, CA
Re: Jupiter and its moons new [Re: ]
      #86109 - 04/06/04 04:34 PM

IT is usually based upon time, and I think that I have read it is somewhere in the 3 to 5 minute range.

BTW, while I am sure that it will make it much harder(maybe impossible!) for you, tracking wise, you may want to think about a barlow.

Regards,

Gary

--------------------
Celestron 80ED
Losmandy G11
NexStar 80
Starlight Xpress SXV-H9
SXV guidehead, ToUcam 840
http://www.teamgs.org/astrophotography.htm


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