Deep Sky Object in Spring
NGC4393 (Galaxy in Coma Berenices)



Date & Time: Mar 20 2020, from 26:05 to 27:00 JST(+0900)
Composed 10 shots with 6 minutes exposed
Optical: Meade 25cm(10") Schmidt-Cassegrain with conversion lens (f=1600mm, F6.3)
with BaaderPlanetarium Moon&Skyglow filter
Auto-guided with Meade LX200 Equatorial & Lacerta M-GEN
Digital Camera: Nikon D810A
Location: Ooizumi, Hokuto city, Yamanashi pref.

Camera Settings: Recording Format...14bit CCD-RAW, converted to 16bit TIFF(4080×4080)
Device Size...20×20mm
Sensitivity...ISO4000, White Balance...Daylight



NGC4393 / Galaxy, type SABd
R.A.12h 25m 50.9s (2000.0)
Dec.+27°33' 37" (2000.0)
Apparent Size4.4×3.4'
Radial Velocity+842km/s
Magnitude12.7
Distance46.5 million light yrs.
Group of GalaxiesNGC4631 Group
Other IDsIC 3323, IC 3329
UGC 7521, CGCG 158-104
MCG +5-29-83, PGC 40600
In western region of Coma Berenices, a spiral NGC4393 is lying at 0.7 degrees south of gamma Com. Although the galaxy is overlapping on the northern part of a huge open cluster of Mel.111, of course they're floating at gigantically different distances. A glittering star at lower part of the image is fifth-magnitude 14 Com, one of member stars in the open cluster.
NGC4393 has an elliptic shape with a long axis of 4.4 arc minutes and a visual brightness of 12.7th magnitude. It's hard to recognize its detailed structures. The galaxy is about 46 million light years away, belonging to a small-scaled galaxy group around NGC4631 at 6 degrees north east on the celestial sphere.




NGC4298, NGC4302

NGC4395


Copyright(c) 2020 by Naoyuki Kurita, All rights reserved.
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