Cone Nebula and the Christmas Tree Cluster (Cone Nebula and the Christmas Tree Cluster) (James R Potts)

Celestial hemisphere: Northern · Constellation: Monoceros (Mon) · Contains: 15 S Mon · B39 · Christmas Tree Cluster · Hubble's variable neb · LBN 899 · LBN 902 · LBN 911 · LBN 912 · LBN 920 · LBN 922 · LDN 1610 · LDN 1613 · NGC 2259 · NGC 2261 · NGC 2264 · Sh2-273 · The star 15Mon

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Cone Nebula and the Christmas Tree Cluster (Cone Nebula and the Christmas Tree Cluster)

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Cone Nebula and the Christmas Tree Cluster (Cone Nebula and the Christmas Tree Cluster)

Captured this 5 nights ago (3 hours of data, Ha & OIII) and really wanted to add more data, but it has been cloudy all week and is forecast to be cloudy for the next several days and then I head to the slopes for a couple of weeks, so we will just go with what I have The nebula came in nicely (HOO), but the stars were awful on the edge as I had my back focus way off (stupid mistake, to be discussed another time). In another goof, I had capture about 1.5 hours of Su, but somehow I accidently switched that session to Bin 3x3, I tried to stack, but APP could not complete its "star analysis." One of those nights, where you just can't seem to do anything right.

In the processing, I ended using StarXterminator to remove the stars, then used PS patch tool to clean up a lot of the stars before adding them back, so the stars are just OK, a bit dim and way out of place on the edges. I didn't get them all fixed, but got most of the really bad ones, so don't examine the edges too closely, LOL. Hopefully I can capture some RGB images in a few weeks and add good stars back to the image.

This object was discovered by William Herschel in 1784 / 85. The cluster consist of about 80 stars inside lots of nebulosity. The cluster spans around 20 light years and is 2,600 light years away. The Cone Nebula is part of a much large area of nebulosity and is an active star forming region.

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Status	Advanced success
Started	...
Astrometry.net job	5521714
PixInsight job	UXXYNG4LSD6SJ7CH413SR4Z658Q2DCF3
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	06h41m32s.33
RA (top/left)	06h37m45s.34
RA (top/right)	06h46m52s.100
RA (bottom/right)	06h45m17s.43
RA (bottom/left)	06h36m10s.16

Dec (center)	+09°47′28″.3
Dec (top/left)	+08°17′34″.10
Dec (top/right)	+08°37′15″.3
Dec (bottom/right)	+11°16′38″.4
Dec (bottom/left)	+10°57′28″.6

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Cone Nebula and the Christmas Tree Cluster (Cone Nebula and the Christmas Tree Cluster)

Cone Nebula and the Christmas Tree Cluster (Cone Nebula and the Christmas Tree Cluster)

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