SH 2-101 (Tulip Nebula) in HOO (Torben van Hees)

Celestial hemisphere: Northern · Constellation: Cygnus (Cyg) · Contains: B144 · Sh2-101

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SH 2-101 (Tulip Nebula) in HOO

Link: http://astro.van-hees.name

Powered byPixInsight

SH 2-101 (Tulip Nebula) in HOO

Link: http://astro.van-hees.name

SH 2-101 is a H2-region in Cygnus, at a distance of about 6000 to 8000 light years (there is conflicting information). Its emissions are blocked by some dark dust and nebula in the foreground which leads to the tulip-like shape when imaged. Surrounding is a lot of fainter bright and dark nebulosity that I tried to show here. In the lower right of the image the shock bow of the black hole Cygnus X-1 (about 7200 light years away) is barely visible, but neither acquisition nor post-processing were aimed at this target - it's a project for a stretch of better weather, maybe later in the season.

I really like the many structures from the dark clouds in this nebula and the faint whips of O3 nebulosity in the center. I am also very pleased with the noise profile of the ASI2600MM, very little NR was necessary.

I'm getting closer to dialling in the collimation of the RC, as tilt and curvature seem to be much reduced.

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Status	Advanced success
Started	...
PixInsight job	S15PKD49VXIU6M57KDQG2TWRUKZ9YILA
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	19h59m51s.283
RA (top/left)	20h01m43s.815
RA (top/right)	19h58m42s.990
RA (bottom/right)	19h57m59s.220
RA (bottom/left)	20h00m59s.590

Dec (center)	+35°22′08″.10
Dec (top/left)	+35°27′36″.60
Dec (top/right)	+35°41′10″.34
Dec (bottom/right)	+35°16′33″.43
Dec (bottom/left)	+35°03′03″.70

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SH 2-101 (Tulip Nebula) in HOO

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