NGC4725 and neighbours (tommy_nawratil)

Celestial hemisphere: Northern · Constellation: Coma Berenices (Com) · Contains: NGC 4712 · NGC 4725 · NGC 4747

Image of the day 04/23/2017

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NGC4725 and neighbours

Image of the day 04/23/2017

Powered byPixInsight

NGC4725 and neighbours

Combining the 3,8µm pixels of ASI1600MMC with my Lacerta Photonewton's 1000mm focal length resultes in a pixel scale of 0,78arcsec/pixel - a healthy oversampling if seeing has mercy. The 16MP chip covers around 40arcmin on the sky, and even tiny NGC4712 (2arcmin long, and smaller axis only the size of Jupiter!) is resolved into wealth of detail. NGC4725 is 11x7arcmin, and the galaxy with the huge tideal streamers is NGC4747 or No.159 in the catalog of Halton Arp.

I have added 100% crops of NGC4725 and 4747, check out for details!

ASI1600MMC here works at unity gain, a LRGB of 143x46x32x32 subs of 180sec each.

I did a search in Aladin/VizieR on a small area north of 4725 - the faintest stars are about 23mag

http://aladin.u-strasbg.fr/java/nph-aladin.pl?from=VizieR&script=get%20Aladin%2012%2050%2040.523%20%2B25%2038%2047.84%2010arcmin%3Bsync%3Bget%20VizieR%28V/139%29

Original
Final
B
C
D

B

Description: NGC4725 and NGC4712 crop

Uploaded: ...

C

Description: NGC4747 crop

Uploaded: ...

D

Description: annotated version

Uploaded: ...

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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.

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Status	Advanced success
Started	...
Astrometry.net job	1542271
PixInsight job	QFJ4O2MDTZAWNU2DYCT2TMMWF0H02GGC
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	12h50m58s.326
RA (top/left)	12h53m13s.829
RA (top/right)	12h48m47s.538
RA (bottom/right)	12h48m43s.655
RA (bottom/left)	12h53m08s.170

Dec (center)	+25°34′23″.91
Dec (top/left)	+25°56′16″.87
Dec (top/right)	+25°57′43″.96
Dec (bottom/right)	+25°12′24″.55
Dec (bottom/left)	+25°10′58″.68

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Image of the day 04/23/2017

NGC4725 and neighbours

Image of the day 04/23/2017

NGC4725 and neighbours

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Image Index:

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Image of the day 04/23/2017

NGC4725 and neighbours

Image of the day 04/23/2017

NGC4725 and neighbours

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Acquisition details

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C

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