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Fading C/2023 A3 Tsuchinshan-ATLAS 11-02-2024

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#1 Achernar

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Posted 04 November 2024 - 09:35 PM

Two nights ago, I was observing and imaging the comet C/2023 A3 Tsuchinshan-ATLAS at the Deep South Star Gaze near Sandy Hook MS. The skies there are much darker than those of Mobile, and that resulted in an unexpected issue. When I aligned the subs on the nucleus, the profusion of trailed background stars nearly overwhelmed the comet. This image is a stack of over eighty 30-second subs taken through red, green and blue filters, aligned on the background stars. Now that the comet is receding into interstellar space, it's motion with respect to the background stars slowed significantly. The displacement in the image is the result of that, since I do not have software that allows the separate processing of the stars and the comet yet. I will archive the data for the day when I get it to enable re-processing of the data I acquired on the comet. An 80mm Astro-Tech EDT apochromatic refractor, ZWO 533MM monochrome camera and Skywatcher EQ6R-Pro mount were used to acquire the image data. Processing was accomplished with Nebulosity and SIRIL, post processing with Photoshop.

 

Taras

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  • C2023A3 Tsuchinshan-ATLAS_RGB_11-02-2024_2_small.jpg

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#2 Oort Cloud

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Posted 04 November 2024 - 10:51 PM

Siril (free) has comet registration.  I haven't used it, as I did not get a chance to image the comet :(  I did at least get to see it with the naked eye, though on 10/19 :) It was pretty rad.  Nice image, BTW!!


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#3 kannassee

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Posted 05 November 2024 - 02:00 AM

Well, and this image was taken in downtown Miami just over the condo building in front of me, so the colors are really off. I even had to improvise a sort of "light shroud" !!!!.....too much ambient light I assume.

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Edited by kannassee, 05 November 2024 - 02:03 AM.

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#4 Achernar

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Posted 05 November 2024 - 04:26 AM

Siril (free) has comet registration.  I haven't used it, as I did not get a chance to image the comet frown.gif  I did at least get to see it with the naked eye, though on 10/19 smile.gif It was pretty rad.  Nice image, BTW!!

Thanks! It has been a superb object for binoculars and telescopes visually, especially under dark skies.

 

Taras


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#5 kannassee

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Posted 29 November 2024 - 01:05 PM

well , the comet is getting really far away but still is going strong!!!....now its magnitude is around 9 or 10 I think

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Edited by kannassee, 29 November 2024 - 01:30 PM.

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