NGC7538 Emission and Reflection Nebula (niteman1946)

Celestial hemisphere: Northern · Constellation: Cepheus (Cep) · Contains: NGC 7538

NGC7538 Emission and Reflection Nebula, niteman1946

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NGC7538 Emission and Reflection Nebula

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NGC7538 Emission and Reflection Nebula

NGC 7538, near the more famous Bubble Nebula, is located in the constellation Cepheus. It is located about 9,100 light-years from Earth. It is home to the biggest yet discovered protostar which is about 300 times the size of the Solar System. It is located in the Cepheus' Arm of the Milky Way and is probably part of the Cassiopeia OB2 complex. It is a region of active star formation including several luminous near-IR and far-IR sources. Stars in NGC 7538 are mainly low-mass pre-main-sequence stars.[Source: Wikipedia]

CAPTURE Information:

The image was captured with the iOptron CEM120 mount , the venerable Meade 12"LX200 SCT, and my Atik 383L+ mono CCD at F7.16 (2182mm FL).

Image subs were taken through Astronomik's narrowband filters Ha, SII and OIII.

IMAGE information -- 2020

This is a combination of Ha, OIII and SII.

Ha : 55 subs (9.17 hr) on Nov 2nd, 3rd, 5th and 6th.

OIII : 38 subs (6.33 hr) on Nov 2nd, 3rd, and 5th.

SII : 40 subs (6.67 hr) on Nov 2nd, 3rd, and 5th.

All exposures were at 10 minutes (600s) each, 1x1 bin and -10C.

Each of Ha, SII and OIII subs were individually integrated. The three assemblies then combined to create the Hubble Palette, using PixelMath and the following “SHO” formula:

Red = SII

Grn = Ha

Blu = OIII

Luminance was created using only subs from the Ha filter.

Processing was done with PixInsight, following (for the most part) kayronjm's tutorial of Feb. 24th from several years back. Credit also goes to Rick Stevenson’s Color Mask Script and Christopher Gomez’s tutorial.

COMMENTS:

First time on this target. It came out a bit noisy, but I really liked the resulting colors.

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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
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This table shows the distribution of awards per data source, compared to the popularity of images acquired from that data source.
	Image of the day	Top pick	Top pick nominations	Total submitted
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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	Basic success
Started	...
Astrometry.net job	3986818
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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NGC7538 Emission and Reflection Nebula

NGC7538 Emission and Reflection Nebula

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NGC7538 Emission and Reflection Nebula

NGC7538 Emission and Reflection Nebula

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