SH2-261 (Lower's Nebula) OSC (Almos Balasi)

Celestial hemisphere: Northern · Constellation: Orion (Ori) · Contains: 69 Ori · 69 f01 Ori · LBN 862 · LBN 863 · LBN 864 · LDN 1586 · LDN 1587 · PGC 136275 · PGC 1483606 · PGC 3097154 · PGC 3097156 · Sh2-261 · The star f1 Ori

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SH2-261 (Lower's Nebula) OSC

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SH2-261 (Lower's Nebula) OSC

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.

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	Distinct awarded users	Total awarded images
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This table shows the distribution of awards per subject type, compared to the popularity of images of that subject type.
	Image of the day	Top pick	Top pick nominations	Total submitted
Deep sky
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	Image of the day	Top pick	Top pick nominations	Total submitted
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Other
Unknown

The “AstroBin Image of the Day and Top Picks”, or IOTD/TP, is a long-running system to promote beautiful, interesting, peculiar, or otherwise amazing astrophotographs, with a focus on technical excellence. Learn more.

Submitted The date and time when you submitted this image for IOTD/TP consideration.	...
Views by Submitters (available since September 19th, 2023) Every image is assigned to 50% of available Submitters. In the event that at least 80% of them don't view the image before its time in the IOTD/TP process expires, it's assigned to the other 50% of Submitters and the process begins anew.
Promotions by Submitters When 3 distinct Submitters promote the image, it moves on to the next stage of the process: evaluation for Top Pick status. This requirement, in addition to anonymization of images and distribution to only a subset of them, prevents biases and ensures that the best images are selected.
Promotions by Reviewers When 3 distinct Reviewers promote the image, it moves on to the next stage of the process: evaluation for IOTD status.
Early dismissal Staff members have a lot of images to inspect on a daily basis, and they can dismiss images if they believe they don't meet the requirements for IOTD/TP selection. If an image is dismissed 5 times, it's removed from the process. This streamlines the process and ensures that any bias present in promotions could be overruled by other staff members.

Status	Advanced success
Started	...
Astrometry.net job	9065229
PixInsight job	IL7CO43NGPXCF63625W4DNMPDZ4BR4Y0
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	06h09m17s.95
RA (top/left)	06h03m40s.90
RA (top/right)	06h11m01s.24
RA (bottom/right)	06h14m55s.27
RA (bottom/left)	06h07m33s.13

Dec (center)	+15°46′51″.5
Dec (top/left)	+15°49′27″.0
Dec (top/right)	+14°29′34″.2
Dec (bottom/right)	+15°43′41″.5
Dec (bottom/left)	+17°04′12″.7

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SH2-261 (Lower's Nebula) OSC

SH2-261 (Lower's Nebula) OSC

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SH2-261 (Lower's Nebula) OSC

SH2-261 (Lower's Nebula) OSC

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