M17 The Swan Nebula (Coolhandjo)

Celestial hemisphere: Southern · Constellation: Sagittarius (Sgr) · Contains: Checkmark Nebula · HD168098 · HD168114 · HD168163 · HD168164 · HD168165 · HD168276 · HD168302 · HD168415 · HD168446 · HD168447 · HD168462 · HD168521 · HD168569 · HD168585 · HD168607 · HD168625 · HD168700 · HD168701 · HD168726 · HD168816 · HD168833 · HD168857 · HD168859 · HD168860 · IC 4706 · IC 4707 · LBN 60 · LDN 359 · Lobster Nebula · And 5 more.

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M17 The Swan Nebula

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M17 The Swan Nebula

This is image represents a few firsts. First Light 533MM pro, First light on my AM3 mount. First Light Antlia HA, OII, Sii*. I loved OSC and said I wouldn't go back to mono. But I reached a limit with my gear and knew the only was was to go back to mono or get more aperture. I think I got about 25% more detail using the same amount of integration time I used to do with the 533MC pro. The guiding on the AM3 compared to my HEQ5 pro was not miles better, but once dialed in, gave me the same 0.5 to 0.7 consistent RMS. But the big differences was weight and ease of set up. Cut the time by over 50%!

Getting the Swan processed in Pixinsight was not easy due to its stubborn reluctance to color map outside of SHO traditional Green.

This image is 29 hours integration time total using 300 sec subs through Askar V @ 600mm FL at 80mm.

Southern Hemisphere Astro
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Status	Advanced success
Started	...
PixInsight job	GLUAU2BU3VJD5VZN1UHYGMZI1W88AJ48
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	18h20m41s.600
RA (top/left)	18h23m08s.178
RA (top/right)	18h22m28s.985
RA (bottom/right)	18h18m14s.380
RA (bottom/left)	18h18m52s.233

Dec (center)	-16°09′38″.58
Dec (top/left)	-16°35′42″.15
Dec (top/right)	-15°34′15″.85
Dec (bottom/right)	-15°43′27″.30
Dec (bottom/left)	-16°44′57″.27

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M17 The Swan Nebula

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