M20 trifid nebula SHO, 2 scopes (pfile)

M20 trifid nebula SHO, 2 scopes

M20 Trifid Nebula
Spring 2024, oakland ca

57x600s AT6RC/2600MM Pro/Astrodon 5nm Ha (9.5h) [bin2]
29x600s AT6RC/2600MM Pro/Astrodon 5nm SII (4.83h) [bin2]
52x600s AT6RC/2600MM Pro/Astrodon 5nm OIII (8.6h) [bin2]

70x300s A-P 110GTX/6200MM Pro/ZWO 7nm Ha (5.83h) [bin1]
50x300s A-P 110GTX/6200MM Pro/ZWO 7nm SII (4.16h) [bin1]
63x300s A-P 110GTX/6200MM Pro/ZWO 7nm OIII (5.25h) [bin1]

Ha : 15.33h
SII: 9h
OIII: 13.85h

Mach1GTO/Mach2GTO mounts, APCC pro and NINA for aquisition. PI for processing.

notes:

the imbalance in the subexposure counts is unintentional. it's the result of having run across so many nights and culling bad frames without readjusting the sequence in NINA. i really shouldhave more SII images but it came out OK thanks to noiseX.

while processing the 2600MM/AT6RC images i realized that the image scale of the bin2 image was roughly the same as the bin1 images from the 110GTX/6200MM. i had been shooting the same field with the 110GTX at the same time, but of course that's a much wider-field image that contains the lagoon nebula as well.

i processed the images separately, then cropped/registered the GTX image to the AT6 image and averaged them together. not ideal but i didn't want to start from scratch and have to go back and crop all the 110GTX subs to get them to register with the AT6 subs in WBPP.

not sure if i like the colors. i could have gone for more gold color instead of red color i suppose.

the sharpness/resolution of the 4.3" 110GTX is very comparable to the AT6RC (6"). this might be an argument to just put the AT6 away and make crops of 110GTX images if i want to have a close-up image.

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Status	Advanced success
Started	...
Astrometry.net job	10066002
PixInsight job	ZKDTQO1QTTTFNB2QFUEEIVY31GPMKZ8S
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	18h02m30s.56
RA (top/left)	18h03m52s.45
RA (top/right)	18h01m09s.10
RA (bottom/right)	18h01m08s.22
RA (bottom/left)	18h03m52s.78

Dec (center)	-22°58′49″.2
Dec (top/left)	-22°30′40″.5
Dec (top/right)	-22°30′39″.2
Dec (bottom/right)	-23°26′56″.5
Dec (bottom/left)	-23°26′58″.4

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