M44, Præsepe, the Beehive Cluster (Richard Francis)

Celestial hemisphere: Northern · Constellation: Cancer (Cnc) · Contains: 38 Cnc · 39 Cnc · 40 Cnc · 41 Cnc) · 41 eps Cnc · 42 Cnc · Almalaf (ε Cnc · Beehive · Beehive cluster · HD73210 · HD73330 · HD73345 · HD73397 · HD73429 · HD73430 · HD73449 · HD73450 · HD73487 · HD73533 · HD73574 · HD73576 · HD73598 · HD73616 · HD73617 · HD73618 · HD73619 · HD73640 · HD73641 · HD73709 · HD73710 · And 30 more.

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M44, Præsepe, the Beehive Cluster

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M44, Præsepe, the Beehive Cluster

This image was made with a beta version of an X2 driver for the Kepler 4040 camera in TheSkyX, which was superseded soon after. Consequently the calibration data were not made with the same driver. It is perhaps because of this that I was unable to calibrate out the fixed-pattern artefacts (in quadrant form) characteristic of this sensor. I left a few remnants in the image, but to reduce the effects I had to suppress a lot of the low-level signal, which is a pity.

This is the central part of the Beehive Cluster, M44, also known as Praesepe ("manger" in Latin). This cluster, at about 600 light-years from Earth, is one of the closest open star clusters to us. Being relatively bright it has been known since classical times.

Astrophotographes (France)
UK Astro-Imaging
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Status	Advanced success
Started	...
Astrometry.net job	8126503
PixInsight job	2NRGH9NEMQLXB3UB7C55LH28P889FRFC
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	08h39m57s.701
RA (top/left)	08h42m13s.595
RA (top/right)	08h37m41s.386
RA (bottom/right)	08h37m42s.741
RA (bottom/left)	08h42m13s.182

Dec (center)	+19°39′49″.52
Dec (top/left)	+20°11′31″.63
Dec (top/right)	+20°11′23″.45
Dec (bottom/right)	+19°07′58″.42
Dec (bottom/left)	+19°08′06″.58

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M44, Præsepe, the Beehive Cluster

M44, Præsepe, the Beehive Cluster

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M44, Præsepe, the Beehive Cluster

M44, Præsepe, the Beehive Cluster

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