Deep Sky Object in Winter
NGC2207 & IC2163 (Galaxies in Canis Major)

Date & Time: Nov 17 2012, from 26:18 to 27:00 JST(+0900)
6 shots composed with 8 minutes exposed
Optical: Meade 25cm(10") Schmidt-Cassegrain with a conversion lens (f=1600mm, F6.3)
with BaaderPlanetarium Moon&Skyglow filter
Auto-guided with Meade LX200 Equatorial & Pictor 201XT
Digital Camera: Canon EOS 600D (Remodeled)
Location: Ooizumi, Hokuto city, Yamanashi pref.

Camera Settings: Recording Format...14bit CCD-RAW, converted to 16bit TIFF(5184×3456)
CCD Sensitivity...ISO1600

NGC2207 / Galaxy, type SAB(r)c pec II
R.A.06h 16m 22.0s (2000.0)
Dec.-21° 22' 21" (2000.0)
Apparent Size4.3×2.7'
Radial Velocity+2728km/s
Group of GalaxiesN/A
Other IDsESO556-8, MCG-4-15-20
UGCA124, PGC18749
IC2163 / Galaxy, type SB(rs)c pec
R.A.06h 16m 27.7s (2000.0)
Dec.-21° 22' 31" (2000.0)
Apparent Size3.0×1.2'
Radial Velocity+2798km/s
Froup of GalaxiesN/A
Other IDsESO556-9, MCG-4-15-21
UGCA125, PGC18751
This image shows you a pair of small galaxies positioned at western region of Canis Major. You can find that about 3.5 degrees southwest of beta CMa. But the galaxies are fainter than 11th magnitude, you need a telescope over 8" in aperture to catch in your naked eyes.
A right galaxy in this image is NGC2207, and another left one has a number of IC2163. This field is equivalent to western edge of the Milky Way in winter, many faint stars are distributed around the pair. This pair has gravitational interactions each other, and it's considered that the galaxies are colliding pair represented by the Antennae in Corvus. The Hubble Space Telescope (HST) has captured a clear image of NGC2207 and IC2163, and the image shows us their arms are warped by mutual gravitation.



Copyright(c) 2012 by Naoyuki Kurita, All rights reserved.
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