M51 combined sessions from C9.25 and OMC300 Klevtsov Mak Cass (Rick Evans)

Celestial hemisphere: Northern · Constellation: Canes Venatici (CVn) · Contains: IC 4278 · M 51 · NGC 5194 · NGC 5195 · Whirlpool Galaxy

M51 combined sessions from C9.25 and OMC300 Klevtsov Mak Cass, Rick Evans

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M51 combined sessions from C9.25 and OMC300 Klevtsov Mak Cass

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M51 combined sessions from C9.25 and OMC300 Klevtsov Mak Cass

On June 25, 2022 I imaged M51 for 2.75 hrs with my C9.25 XLT and 0.63x focal reducer, using a ZWO ASI5323MC astro camera. On July 3, 2022 I imaged M51 again but this time using my OMC300 Klevtsov Mak-Cass scope. It is native f9 but I used it with a 0.7x focal reducer, using a ZWO ASI6200MC full frame astro camera. The imaging time was 4 hours. Processed photos from each of these scopes looked fine. Today (Oct 31, 2022) I decided to combine both imaging sessions using Astro Pixel Processor which took something like 5 hours to analyze, calibrate, normalize, register and integrate the results into a single fits image. I brought this into Siril for initial processing and then into Gimp and ImagesPlus for fine tuning. This is the result, representing a total imaging time of 6.75 hrs. Seeing was poor even for my area during both imaging sessions and was no better than 5-6 arc seconds.

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B

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Status	Advanced failed
Started	...
Astrometry.net job	6670160
PixInsight job	LQ0UDU4GHYWKQBHBV76IFWX92H5M9CAM
PixInsight queue size	n/a
PixInsight stage	PLATE_SOLVING_IMAGE

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M51 combined sessions from C9.25 and OMC300 Klevtsov Mak Cass

M51 combined sessions from C9.25 and OMC300 Klevtsov Mak Cass

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M51 combined sessions from C9.25 and OMC300 Klevtsov Mak Cass

M51 combined sessions from C9.25 and OMC300 Klevtsov Mak Cass

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