Barnard 150 and Sharpless 2-129 (Robin Livermore)

Celestial hemisphere: Northern · Constellation: Cepheus (Cep) · Contains: B148 · B149 · B150 · HD197734 · HD198300 · HD198654 · HD198662 · HD199120 · HD199306 · HD199354 · HD199937 · HD199967 · HD200205 · HD200386 · HD201063 · HD201344 · HD201429 · HD202214 · HD202380 · HD203025 · HD203265 · HD203338 · HD203339 · HD203534 · HD203550 · HD203551 · HD203574 · HD203627 · HD203695 · HD204150 · And 13 more.

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Barnard 150 and Sharpless 2-129

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Barnard 150 and Sharpless 2-129

I was tempted to call this "Look , no squid!" , or perhaps, "Seahorse searching for a squid".

Nothing against squid images - it's a labour of love collecting all that OIII and then working hard in post-processing to bring it out in a balanced finished image. But this is an antidote to all that - some briefly gathered broadband data, relatively simple processing, and an end result that brings out some different details in this area, in particular dust and some areas of reflection nebulosity, including vdB 140 towards the top left. When I say "briefly gathered", I guess it was a bit more complicated than that - 5 consecutive nights were required to get the 3h 45m of data across a 3 panel mosaic. This was partly due to hazy cloud getting in the way, and partly due to the very short period of darkness available (right on the cusp of astronomical night disappearing here). Five consecutive nights you say? Wales? Luxury!

Sharpless 2-129 is a mostly faint but large area of HII emission nebulosity, catalogued by Stewart Sharpless in the 1950s from the Palomar Sky Survey, and later earning the nickname Flying Bat Nebula. The Squid is nowhere to be seen of course, and this shows why it's perhaps not surprising it wasn't discovered until 2011. Barnard 150, nicknamed the Seahorse, is made up of a number of dark molecular clouds where new stars are forming and that completely block the light from stars behind, and it stands out nicely from the rich star field around it. Eta Cephei at mag 3.42 is just out of the frame to the bottom right, causing the bright dome of light there.

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Description: slight push to contrast

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Sharpless2 Objects
Celestron RASA
ZWO ASI2400MC Users

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Status	Advanced success
Started	...
Astrometry.net job	7779732
PixInsight job	6RCZM8A59XUGPMN23AIH660H1V14TX5V
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	21h03m15s.63
RA (top/left)	21h22m08s.14
RA (top/right)	21h25m16s.50
RA (bottom/right)	20h42m20s.12
RA (bottom/left)	20h43m07s.18

Dec (center)	+60°10′51″.5
Dec (top/left)	+58°23′13″.5
Dec (top/right)	+61°32′22″.3
Dec (bottom/right)	+61°47′20″.8
Dec (bottom/left)	+58°36′50″.4

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Barnard 150 and Sharpless 2-129

Barnard 150 and Sharpless 2-129

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Barnard 150 and Sharpless 2-129

Barnard 150 and Sharpless 2-129

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