UGC 4305, LRGB ( Cedric Raguenaud )

Celestial hemisphere: Northern · Constellation: Ursa Major (UMa)

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UGC 4305, LRGB

Link: https://raguenaud.space/2023/02/ugc-4305-lrvb/

Powered byPixInsight

UGC 4305, LRGB

Link: https://raguenaud.space/2023/02/ugc-4305-lrvb/

Imaging Telescopes Or Lenses: Omegon Pro RC 355/2845 Truss
Imaging Cameras: SBIG STT-8300
Mounts: Sky-Watcher EQ8
Filters: Baader Blue (B-CCD) 36 mm · Baader Green (G-CCD) 36 mm · Baader Red (R-CCD) 36 mm · Baader UV/IR Cut / Luminance 36 mm
Software: Pleiades Astrophoto PixInsight · Stefan Berg Nighttime Imaging 'N' Astronomy (N.I.N.A. / NINA)

Dates:: Jan. 24, 2023 · Jan. 25, 2023 · Jan. 26, 2023 · Jan. 27, 2023 · Jan. 28, 2023 · Jan. 29, 2023 · Jan. 30, 2023 · Jan. 31, 2023
Frames:: Baader Blue (B-CCD) 36 mm: 39×300″(3h 15′) -15°C bin 1×1
Baader Green (G-CCD) 36 mm: 46×300″(3h 50′) -15°C bin 1×1
Baader Red (R-CCD) 36 mm: 43×300″(3h 35′) -15°C bin 1×1
Baader UV/IR Cut / Luminance 36 mm: 135×300″(11h 15′) -15°C bin 1×1
Integration:: 21h 55′
Avg. Moon age:: 6.65 days
Avg. Moon phase:: 43.24%
Bortle Dark-Sky Scale:: 3.00

RA center: 08h19m04s.102

DEC center: +70°43′32″.25

Pixel scale: 0.802 arcsec/pixel

Orientation: -6.074 degrees

Field radius: 0.286 degrees

WCS transformation: thin plate spline

More info:Open

Resolution: 2048x1559

File size: 7.3 MB

Data source: Own remote observatory

Remote source: e-EyE Extremadura

UGC 4305, aka Holmberg II, an interesting dwarf galaxy with a lot of star formation and a very bright x-ray source, most likely a black hole.

Data and processing: Cedric aguenaud (http://raguenaud.space)

Rarely Imaged Small DSOs
Entre Encinas y Estrellas (e-EyE)

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	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	Advanced success
Started	...
Astrometry.net job	7101151
PixInsight job	XH54OIGCE1AW6XZ8DGLSI83V188820XQ
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	08h19m04s.102
RA (top/left)	08h21m36s.693
RA (top/right)	08h16m04s.758
RA (bottom/right)	08h16m34s.139
RA (bottom/left)	08h22m00s.722

Dec (center)	+70°43′32″.25
Dec (top/left)	+70°55′16″.53
Dec (top/right)	+70°52′21″.63
Dec (bottom/right)	+70°31′40″.97
Dec (bottom/left)	+70°34′32″.88

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UGC 4305, LRGB

UGC 4305, LRGB

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UGC 4305, LRGB

UGC 4305, LRGB

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