LDN 1622 (Alex Woronow)

Celestial hemisphere: Northern · Constellation: Orion (Ori) · Contains: LDN 1621 · LDN 1622 · VdB62 · VdB63

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LDN 1622

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LDN 1622

LDN 1622

OTA: Star-Fire 175 (f/8)

Camera: FLI - PL16070AE

Observatory: Deep Sky West

EXPOSURES:

Red: 15 x 600 seconds

Blue: 21 x 600

Green: 20 x 600

Luminosity: 31 x 600

Hydrogen: 12 x 1800

Total exposure ~22 hours

Image Width: ~1.4 deg

Processed by Alex Woronow using PixInsight, StarNet++, Matlab, Aurora HDR in 2019

LDN 1622 lies in the constellation of Orion and at a distance of about 500 light-years. This is considerably closer than the Great Nebula of Orion, in Orion’s sword.

Observations at microwave frequencies show anomalously strong radiation that correlates with infrared radiation intensities. This correlation is consistent with the “spinning dust model.” This model suggest that extremely small (nanometer) dust grains, rapidly spinning (10-60 GHz), and carrying a dipole electric charge give rise to both the observed microwave radiation and thermal IR radiation.

(Source: largely Wikipedia )

Original
Final
B

Narrowband imaging
The refractors!

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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	2717739
PixInsight job	X1AZMG4ZV5GRBNWCQI42Z9CU1WRAH8W7
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	05h54m50s.62
RA (top/left)	05h56m48s.67
RA (top/right)	05h56m39s.98
RA (bottom/right)	05h52m52s.55
RA (bottom/left)	05h53m01s.22

Dec (center)	+01°59′11″.6
Dec (top/left)	+01°17′08″.4
Dec (top/right)	+02°42′40″.10
Dec (bottom/right)	+02°41′19″.9
Dec (bottom/left)	+01°15′41″.4

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LDN 1622

LDN 1622

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LDN 1622

LDN 1622

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