NGC 4725 and surrounding in RGB color

During my holidays in the Eifel in Germany I have been imaging NGC 4725.  NGC 4725 is an intermediate barred spiral galaxy about 40 million light-years away in the constellation Coma Berenices. NGC 4725 is a Seyfert Galaxy, suggesting an active galactic nucleus containing a supermassive black hole.

Observation data (J2000 epoch)
Constellation Coma Berenices
Right ascension 12h 50m 26.6s
Declination +25° 30′ 03″
Redshift 1206 ± 3 km/s
Distance 40 ± 6 Mly (12.3 ± 1.9 Mpc)
Type SAB(r)ab pec
Apparent dimensions (V) 10′.7 × 7′.6
Apparent magnitude (V) 10.1

Image info:

Telescope: TEC140Camera: QSI 583ws
Mount: NEQ6
Guiding: 90mm f5.5 with a DMK21


Luminance (made from RGB and luminance images) 45×10 min (=7.5 h)
R: 6 x 10 min
G: 9 x 10 min
B: 6 x 10 min


Annotated version:




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