Sh2-140 Area, Ha, Borg 55FL (Stephen Garretson)

Celestial hemisphere: Northern · Constellation: Cepheus (Cep) · Contains: 17 Cep) · 17 ksi Cep · 18 Cep · 19 Cep · 20 Cep · 25 Cep · 26 Cep · Al Kurhah (ξ Cep · Alkurhah · Cepheus · LBN 494 · LBN 496 · LBN 498 · LBN 500 · LBN 505 · LBN 508 · LBN 509 · LBN 510 · LBN 520 · LBN 523 · LBN 526 · LDN 1178 · LDN 1182 · LDN 1186 · LDN 1188 · LDN 1191 · LDN 1193 · LDN 1195 · LDN 1196 · LDN 1201 · And 24 more.

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Sh2-140 Area, Ha, Borg 55FL

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Sh2-140 Area, Ha, Borg 55FL

Here's that same area as recently posted, but at a wider FOV, shot with the 200mm focal length Borg 55FL. It is presented "upside down" relative to the other image; this is because the cameras happen to be oriented 180° opposite of each other. I could flip it, in fact I did look at it flipped; however I like this orientation better. Besides, is there really "up" or "down" in space?

[21] 600s Ha guided subs
total integration: 3 hours 30 minutes

image capture:
Borg 55FL f/3.6 Petzval Astrograph
ASI 2600MM Pro
ZWO EWF [filter wheel]
Chroma 3nm Ha filter

guiding:
William Optics RedCat f/4.9 Petzval Astrograph
ASI 290M Mini

Paramount MX+

from the Beevo Dome

TheSkyX, SGP, PHD2
PixInsight, Topaz DeNoise AI, Mac OS Photos, Photoshop, Preview

...Stephen

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.
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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	5820257
PixInsight job	U5BUCMCYOYZ1WQGJSJTLYOWKZV6LT1CE
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	22h13m56s.72
RA (top/left)	21h52m34s.85
RA (top/right)	21h56m03s.83
RA (bottom/right)	22h30m55s.46
RA (bottom/left)	22h36m24s.40

Dec (center)	+64°17′02″.6
Dec (top/left)	+67°24′25″.5
Dec (top/right)	+61°04′05″.1
Dec (bottom/right)	+61°00′03″.2
Dec (bottom/left)	+67°19′37″.8

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Sh2-140 Area, Ha, Borg 55FL

Sh2-140 Area, Ha, Borg 55FL

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Sh2-140 Area, Ha, Borg 55FL

Sh2-140 Area, Ha, Borg 55FL

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