SH2-154 + SH2-155 (Andrew Burwell)

Celestial hemisphere: Northern · Constellation: Cepheus (Cep) · Contains: HD215484 · HD216103 · HD216380 · HD216532 · HD216572 · HD216629 · HD216658 · HD216711 · HD216898 · HD217035 · HD217061 · HD217086 · HD217099 · HD217312 · HD217463 · HD217657 · HD217730 · HD217966 · HD218229 · LBN 521 · LBN 522 · LBN 524 · LBN 527 · LBN 529 · LDN 1210 · LDN 1211 · LDN 1212 · LDN 1215 · LDN 1216 · LDN 1218 · And 5 more.

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SH2-154 + SH2-155

Link: https://www.macobservatory.com

Powered byPixInsight

SH2-154 + SH2-155

Link: https://www.macobservatory.com

This image has been several days in the making. Total integration time is from three nights of exposures. Leading up to this image, I had been so impressed with StarXterminator and NoiseXterminator at the amount of data you could extract from an image with a lower integration time. And while that might still hold true for some bright objects, dimmer subjects still need increased integration time.

I've included several images here to show how adding more time can still benefit the final image. The final image includes 270 five minute frames evenly split between SHO filters.

The second image in the series is just two nights of data, so a total of 180 five minute frames split between SHO filters. It’s very clear to me the increased detail in the dust lanes, and subtle differences in the detail even in bright areas of the nebula.

The last image is an HSO process using the final set of 270 frames just to see how strong the Hydrogen Alpha is in the region. SII is actually quite prevalent, but blends in too much with the overpowering Ha.

Final
Original
B
C
D

B

Title: Two days of integration.

Description: Less integration time overall, clearly missing detail in the dark dust areas and even missing some of the ridge detail in the highlights.

Uploaded: ...

C

Title: HSO rendition of the same 3 day data.

Uploaded: ...

D

Description: I took another look at the image and processed it with a manual stretch, and took the time to do some local area contrast to enhance the two nebulas.

Uploaded: ...

Texas Astronomy

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Status	Advanced success
Started	...
Astrometry.net job	6324954
PixInsight job	IK9O003762GO4YQ7VT0Z982VVAPIHENR
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	22h55m15s.97
RA (top/left)	23h01m10s.28
RA (top/right)	22h41m29s.98
RA (bottom/right)	22h49m53s.23
RA (bottom/left)	23h08m59s.11

Dec (center)	+62°03′03″.3
Dec (top/left)	+63°30′47″.7
Dec (top/right)	+62°03′08″.5
Dec (bottom/right)	+60°34′24″.2
Dec (bottom/left)	+61°57′50″.2

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SH2-154 + SH2-155

SH2-154 + SH2-155

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Image Index:

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SH2-154 + SH2-155

SH2-154 + SH2-155

Equipment

Acquisition details

Description

Comments

Revisions

B

C

D

Sky plot

Histogram

In these public groups

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