M33 - The Triangulum Galaxy

 Posted: Dec 29th, 2024
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Technical Info
Telescope/Lens: SharpStar 61EDPH II + 0.8x reducer
Camera: ZWO ASI533MM Pro
Mount: Umi 17 Lite
Guide Scope: Starpal 32/125 f4
Guide Camera: ZWO ASI 120mm
Software: Siril, GraXpert, Adobe Photoshop, Cosmic clarity
Accessories: ZWO Asiair mini, ZWO EFW-S, ZWO EAF
Exposure:
106 x 180" ISO/Gain: 101 - R, G, B
Yellow zoneLight Pollution:
 Lipeck, Russia
 Nov 2nd, 2024
5 h 18 m
845
The first session took place on November 2nd, and I only managed to capture through the red and blue filters. I completed the green channel only on December 26th. After finishing the post-processing, I noticed an "artifact" in the upper right corner of the frame in the form of a sequence of red and blue dots. At first, I wanted to remove it, but after an investigation, it turned out to be a large Jupiter trojan asteroid from the Trojan group - 16070 Charops, with a diameter of over 60 km. At the time of imaging, it had an apparent magnitude of approximately 16.85 and was barely distinguishable in individual frames. The color is explained by the use of a monochrome sensor, and the absence of green dots is because the green channel was completed almost 2 months later. So, a small thing - but a pleasant one.
Resolution: 3008x3008 px
Scale: 4031 KB
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