The Cosmic Questionmark (NGC 7822) in Narrowband (JDJ)

Celestial hemisphere: Northern · Constellation: Cassiopeia (Cas) · Contains: 10 Cas · NGC 7762 · NGC 7822 · The star 10Cas

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The Cosmic Questionmark (NGC 7822) in Narrowband

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The Cosmic Questionmark (NGC 7822) in Narrowband

Imaged the 'Cosmic Questionmark' (NGC 7822, SH2-170) on the nights of December 19/20/22, 2021 and January 3/7/11/26, 2022. Final image is a three panel mosaic from this data. The brightest portion of this region is NGC7822, and the dot of the question mark is SH2-170. Towards the end of this project I got a ZWO ASIAIR Plus integrated into this imaging rig, and boy is it a joy to work with!

Imaged with Astrotech AT60 at F4.8 (288 mm focal length) using Astrotech ATRF60 field flattener/0.8x reducer, Optolong L-Enhance dual narrowband filter, and full spectrum modified Nikon D5300. Total integration time of ~7 hours for each panel of the mosaic:
NGC 7822 (upper): 84 subs at ISO400 x 300 sec
NGC 7822 (centered): 70 subs at ISO400 x 300 sec
SH2-170: 69 subs at ISO400 x 300 sec

Original version = Ha image

Rev B = starless Ha image

Rev C = OIII image

Final
Original
B
C
D
E

B

Title: Starless Ha image

Uploaded: ...

C

Title: OIII image

Uploaded: ...

D

Title: Cropped to NGC7822

Uploaded: ...

E

Title: Cropped to SH2-170

Uploaded: ...

Nikon Imagers
The refractors!
Cloudy Nights
DSLR narrowband
Optolong L-eNhance filter
DSLR/Mirrorless Imagers from the World
Suburban Astrophotography
The OSC Club (One Shot Camera)

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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.
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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	5451207
PixInsight job	1ICIMEUKAAQJ4LYE5HIDT2PH9PUWCERM
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	00h02m54s.71
RA (top/left)	00h23m16s.34
RA (top/right)	23h38m32s.75
RA (bottom/right)	23h47m23s.95
RA (bottom/left)	00h21m51s.84

Dec (center)	+66°40′40″.1
Dec (top/left)	+69°58′41″.8
Dec (top/right)	+69°43′26″.5
Dec (bottom/right)	+63°13′42″.1
Dec (bottom/left)	+63°26′05″.0

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The Cosmic Questionmark (NGC 7822) in Narrowband

The Cosmic Questionmark (NGC 7822) in Narrowband

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Image Index:

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The Cosmic Questionmark (NGC 7822) in Narrowband

The Cosmic Questionmark (NGC 7822) in Narrowband

Equipment

Acquisition details

Description

Comments

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C

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E

Sky plot

Histogram

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