Lobster Claw Mosaic - SH2-157 (Kevin Morefield)

Celestial hemisphere: Northern · Constellation: Cepheus (Cep) · Contains: LBN 533 · LBN 536 · LBN 537 · LBN 540 · NGC 7510 · Sh2-157

Image of the day 09/03/2018

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Lobster Claw Mosaic - SH2-157

Image of the day 09/03/2018

Powered byPixInsight

Lobster Claw Mosaic - SH2-157

Like so many of the objects I shoot I discovered this one from others on Astrobin - Thanks everyone!

My FOV is too small for this so I planned a two panel capture. We had a couple of weeks of great weather and seeing so capturing the 65 hours of data was pretty painless. (Automation via CCDAutopilot!!)

Color here comes from OIII and SII with a 50-50 blend used for green. Ha is used for Luminance. I took non-linear channel masters from CCDStack into Photoshop and created the color masters there. The two color masters were joined using the mosaic automation in PS. I then did the usual color noise reduction, saturation, and color balancing. The Luminance channel has some unsharp masking and contrast enhancement. Noise reduction in the luminance channel was done by applying PS noise reduction to the dim part of a luminance mask.

20 minute subs were used with Astrondon 5,3,3 filters. 65.67 Hours total split roughly evenly between each side.

Deep Sky Mosaics

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Status	Advanced success
Started	...
Astrometry.net job	2224327
PixInsight job	CTELF1AI93I7EAPIZ6U0OXE2SRWUZLWJ
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	23h14m47s.859
RA (top/left)	23h19m14s.398
RA (top/right)	23h16m42s.544
RA (bottom/right)	23h10m12s.746
RA (bottom/left)	23h12m57s.945

Dec (center)	+60°15′01″.14
Dec (top/left)	+59°43′31″.55
Dec (top/right)	+60°58′37″.00
Dec (bottom/right)	+60°46′01″.71
Dec (bottom/left)	+59°31′18″.90

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Image of the day 09/03/2018

Lobster Claw Mosaic - SH2-157

Image of the day 09/03/2018

Lobster Claw Mosaic - SH2-157

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Image of the day 09/03/2018

Lobster Claw Mosaic - SH2-157

Image of the day 09/03/2018

Lobster Claw Mosaic - SH2-157

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