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M51
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Apr 19, 2024 06:42:39   #
pfrancke Loc: cold Maine
 
profbowman wrote:
Thanks again for sharing your procedure and the philosophy behind it. I definitely understand how stacking reduces random noise. What I am unclear about is how stacking hides or enhances regular motion.

For example, with a period of 4.5 days, Jupiter's Giant Red Spot is moving at just over 3 deg per hour. So, long exposures and/or stacking will affect how this motion is recorded in the final photo. Just things I think about from time to time but without the equipment to experiment. --Richard
Thanks again for sharing your procedure and the ph... (show quote)


thanks Jay, Planetary tracking is a different animal entirely. I know nothing about that, absolutely nothing. With math and software I imagine the subject can be tracked, (like Jupiter, but I don't if a particular moon is trackable yet).

Anyway though, I suspect part of the secret sauce for processing such a thing is to get tracking shots of the subject and get shots of the moon as well, and separate them, and process them alone, and then composite them back together again.. You are right that the moon since it moves differently than the planet it circles, would I suspect show as a blur or some such depending on how long the exposures add up to and how fast it is moving.

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Apr 19, 2024 06:45:41   #
pfrancke Loc: cold Maine
 
btrlvngthruchem wrote:
pfrancke,

Your M51 is special, especially when viewing the download. What really drew me in was the amount of continuum, IFN, or ___ (fill in the blank with the correct noun) you were able to extract with your noob Pixinsight post-processing. I'd gladly take half of your talent with that program.

Jay


hi Jay, Blush... thanks. The line (like a cat scratch), is just another small galaxy up there. But it does not look so good due to excessive sharpening that I had processed into the image (I suspect).

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Apr 19, 2024 18:08:38   #
btrlvngthruchem
 
Ah, gotcha. That's on me. I should have looked at a map. Appreciate the response.

Jay

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Apr 29, 2024 09:07:29   #
stepping beyond Loc: usa eastcoast
 
Nicely done, I hope the weather will cooperate for me soon.

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