SH2-261 (Lower's Nebula) HO-RGB (Almos Balasi)

Celestial hemisphere: Northern · Constellation: Orion (Ori) · Contains: LBN 862 · LBN 863 · LBN 864 · LDN 1587 · PGC 136275 · PGC 3097154 · PGC 3097156 · Sh2-261

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SH2-261 (Lower's Nebula) HO-RGB

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SH2-261 (Lower's Nebula) HO-RGB

Sh 2-261 is a HII region in the northern part os the constellation Orion. It is often called Lower's nebula because it appears on a photographic plate taken by the Harold and Charles Lower in 1939. The distance of this nebula is not known with certainty, but estimated to be about 3000 light years away.

When photographed in RGB, the Ha region can be seen nicely, but it does not show too many details, as it is a rather faint nebula. On the other hand, with ultra-narrowband filters, the details are very nice with all three filters, giving you the opportunity to make very spectacular HOO and SHO false color photos. But we can use it in combination with RGB to highlight its colours better.

This image is a RGB, Ha and O-III combination.

Original
C
D
E
Final
F

D

Description: Reprocessed the star field

Uploaded: ...

E

Title: New processing and new crop

Uploaded: ...

F

Description: This region contains a very dense star field, which was less visible in previous versions. Here, I tried to find the right balance between the nebula and the stars to present the region together.

Uploaded: ...

Sharpless2 Objects
ZWO ASI2600MM Pro
QHY268M/ZWO2600M Images
ZWO ASI 2600MC PRO
CMOS Imagers
ZWO ASIAIR PRO USERS
N.I.N.A. Users
Multiscope Setup
Gothard Group (Magyarok/Hungarians)
Skywatcher Esprit ED Super APO Triplet
Images from the EdgeHD Series

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Status	Advanced success
Started	...
Astrometry.net job	9408155
PixInsight job	A62JQ3W9XDCKSU0HKX1RBULFC2KAG1IU
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	06h09m26s.56
RA (top/left)	06h13m50s.49
RA (top/right)	06h08m22s.25
RA (bottom/right)	06h05m02s.41
RA (bottom/left)	06h10m30s.10

Dec (center)	+15°39′37″.1
Dec (top/left)	+15°35′50″.2
Dec (top/right)	+16°41′27″.3
Dec (bottom/right)	+15°43′08″.8
Dec (bottom/left)	+14°37′51″.10

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SH2-261 (Lower's Nebula) HO-RGB

SH2-261 (Lower's Nebula) HO-RGB

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SH2-261 (Lower's Nebula) HO-RGB

SH2-261 (Lower's Nebula) HO-RGB

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