Deep Sky Object in Winter
NGC1084 (Galaxy in Eridanus)

Date & Time: Dec 23 2011, from 22:14 to 22:44 JST(+0900)
Composed 6 shots with 6 minutes exposed
Optical: Meade 25cm(10") Schmidt-Cassegrain with conversion lens (f=1790mm, F7.1)
with BaaderPlanetarium Moon & Skyglow filter
Auto-guided with Meade LX200 Equatorial & Pictor 201XT
Digital Camera: Nikon D700
Location: Ooizumi, Hokuto city, Yamanashi pref.

Camera Settings: Recording Format...14bit CCD-RAW, converted to 16bit TIFF(2784×1848)
Device Size...DX Format (24×16mm)
CCD Sensitivity...ISO3200

NGC1084 / Galaxy, type SB:(rs)bc pec II?
R.A.02h 45m 59.7s (2000.0)
Dec.-07° 34' 42" (2000.0)
Apparent Size3.2×1.8'
Radial Velocity+1438km/s
Distance60 million light yrs.
Group of GalaxiesNGC1052 Group
Other IDsMCG-1-8-7, IRAS02435-0747
Around the western edge of Eridanus, a tiny spiral of NGC1084 is lying near the border to Cetus. You can use Mira as a guide star tracing toward SE about 8 degrees.
The galaxy has a long axis of 3 arc minutes and a brightness of 11th magnitude, it's very minor one but this image shows you an unexpectedly good-proportioned face-on galaxy. It seems like a shrunken M33 in Triangulum.

Nebulosities around the Hyades


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