LBN 437 with some Sharpless 126 (James E.)

LBN 437 with some Sharpless 126

This image shows the molecular cloud LBN 437 intermixed with the much larger (several degrees in diameter) Sharpless 126 Ha emission nebula in Lacerta. LBN 437 is also known as the Gecko Nebula while Sharpless 126 has been called the Stellar or Star Funnel. It is estimated to be about 1500 light years away but there have been multiple distance estimations based on multiple methods. The most prominent feature of NGC 437 is a symmetrical reflection nebula - GN 22.32.5 (see revision cropped image) - associated with the Herbig Ae/Be star V0375 Lacertae and is host to a bipolar jet. A Herbig Ae/Be star is a pre-main sequence star - a young (less than 10 million years old) star of spectral type A or B that is still embedded in gas-dust envelopes and approaching the main sequence (although not burning hydrogen in their center). Professional observations have detected multiple small Herbig-Haro objects within LBN 437.

This nebula lies within a dense starfield making processing difficult without creating starless images. Ha in this area does not have any structural detail while Lum and RGB in LBN 437 show significant cloud-like details similar to a nebula such as the Witch Head Nebula in Orion. See revisions for supporting images. I was surprised at the significant number of small background galaxies in the image after applying Russell Croman's StarXTerminator program in PixInsight.

Imaged over several nights: Jul 26-27; Aug 1, 9 and 11, 2023.

B

Description: Lum with stars_7.5 hours

Uploaded: ...

C

Description: Lum_starless_7.5 hours_denoised

Uploaded: ...

D

Description: RGB_starless_2 hours each_denoised

Uploaded: ...

E

Description: Ha_starless_12 hours_denoised

Uploaded: ...

F

Description: Reflection nebula - GN 22.32.5

Uploaded: ...

ZWO ASI2600MM Pro
Sharpless2 Objects
"Simply Stellarvue"
N.I.N.A. Users
NOVAC
The refractors!

	Distinct awarded users	Total awarded images
Image of the day
Top picks
Top pick nominations

	Image of the day	Top pick	Top pick nominations	Total submitted
Deep sky
Solar system
Extremely wide field
Star trails
Northern lights
Noctilucent clouds
Landscape
Artificial satellite

	Image of the day	Top pick	Top pick nominations	Total submitted
Backyard
Traveller
Own remote observatory
Amateur hosting facility
Public amaeteur data
Professional, scientific grade data
Mix of multiple sources
Other
Unknown

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	...
PixInsight job	TJ6ZQA1X48OYJDE2NNGMYXU1XS2LQ7ZC
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	22h32m48s.37
RA (top/left)	22h39m25s.78
RA (top/right)	22h25m58s.86
RA (bottom/right)	22h26m20s.50
RA (bottom/left)	22h39m28s.00

Dec (center)	+40°47′23″.1
Dec (top/left)	+41°38′26″.10
Dec (top/right)	+41°35′07″.5
Dec (bottom/right)	+39°54′48″.0
Dec (bottom/left)	+39°58′11″.9

AstroBin

AstroBin

Image Index:

Contribution Index (beta):