LBN 723, 727, 732, 722 & 729 (Reg Pratt)

Celestial hemisphere: Northern · Constellation: Ursa Major (UMa) · Contains: 29 Lyn · 56 Cam · LBN 723 · LBN 727 · LBN 732 · LBN 733 · The star 29Lyn

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LBN 723, 727, 732, 722 & 729

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LBN 723, 727, 732, 722 & 729

LBN 723, 727, 732, 722 & 729. Collectively they make up an extremely faint molecular cloud at the head of Ursa Major. There are a few of these scattered throughout the area and are close enough to the M81 group that I wouldn't be surprised if it was all one huge cloud. An internet search turned up very little information on these objects. In fact, I was only able to find a single amateur image of it.

This thing is dim. People in the hobby like to throw that word around a lot but I'm not kidding. You're looking at 52 hours of data (a new solo record) taken from considerably dark sky and I still feel I haven't resolved all that is available. With apertures this small I could easily have gone over 100 hours but to be honest it's not an interesting enough target to spend more than the 5 nights I did on it. I'll probably circle back around one day with a 10" newt and really get up in its business. In the end though, I'm relatively happy with it and though it doesn't have that banger quality it definitely earns points for being uncommon and faint.

Equipment:
2x William Optics GT81 IV
William Optics Flat 6a iii 0.8x Focal Reducers
ZWO ASI2600mm, TS-Optics LRGB Filters
QHY268m, Astronomik L2 Luminance, Deep Sky RGB Filters
GEM45 mount
ADM 15" Dual Saddle
ADM Max Guider Alt/AZ adapter

N.I.N.A.
Pixinsight
Photoshop CS5

SQM: Bortle 4 [Magnitude 21.3]

L: 27.19 hrs
R : 8.31 hrs
G : 8.54 hrs
B : 8.91 hrs
TOTAL INTEGRATION: 52.95 hrs

The refractors!
Unique or Unusal Deep Sky Targets
Multiscope Setup
ZWO ASI2600MM Pro
SF Bay Area Imagers

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	Image of the day	Top pick	Top pick nominations	Total submitted
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Other
Unknown

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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Status	Advanced success
Started	...
Astrometry.net job	5578481
PixInsight job	3U0NDEAF0F281ALLDVLQUDYWFZ2GO6ZY
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	08h13m13s.40
RA (top/left)	08h03m55s.55
RA (top/right)	08h06m00s.24
RA (bottom/right)	08h21m46s.11
RA (bottom/left)	08h21m07s.89

Dec (center)	+60°27′15″.1
Dec (top/left)	+61°45′08″.0
Dec (top/right)	+59°00′17″.3
Dec (bottom/right)	+59°07′25″.6
Dec (bottom/left)	+61°52′48″.10

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LBN 723, 727, 732, 722 & 729

LBN 723, 727, 732, 722 & 729

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LBN 723, 727, 732, 722 & 729

LBN 723, 727, 732, 722 & 729

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