NGC4725 + NGC4712 Galaxies in Coma Berenices

These are the two galaxies NGC4725 and its weaker neighbour NGC4712,situated far north (for Chilenian observers!) in the constellation of Coma Berenices.

Sized about 11 arcminutes,NGC4725 shines at a visual magnitude of about 10mag and so is an easily observable object even for smaller telescopes.

Classified as a SAB(r)ab-typed galaxy,it only has one spiral arm,in opposite to the normal case of posessing two or even more arms,as the other galaxxy NGC4712 shows.

NGC4725 lies about 50mio. light-years away.Some supernovas have been observed in the past: SN 1940B (type-IIP), SN 1969H (type-I), SN 1987E and SN 1999gs (type-Ia).

It was first seen by William Herschel in 1785.

 

position (epoch 2000):

RA.: 12h 50m 26,6s
Decl.: +25° 30′ 03″

 

image data:

LRGB image with L = 15x1200s, RGB = 6x1200s each,a total of 11.0 hours

80cm f/7 AstroOptik Keller corrected cassegrain FLI Proline 16803 Astrodon LRGB Gen-II filters

Prompt 7 CTIO/UNC Chile,remote controlled

image processing: Bernd Flach-Wilken

 

here you see NGC4725 to the left ans NGC4712 to right in a 22.2arcmin.-sized FOV.North is up.

To get full resolution: click here

 here you have a more deatailed look to NGC4725 (filed-size 14´x14´)

with the Spitzer-IR-satellite you can see the brigt starburst-regions of this galaxy:click here

 

 

 

Last modified on Wednesday, 23 October 2019 17:44

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