Deep Sky Object in Spring
NGC2903 (Galaxy in Leo)


Date & Time: Mar 16 2018, from 25:04 to 25:44 JST(+0900)
Composed 9 shots with 5 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 & Pictor 201XT
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




NGC2903 / Galaxy, type SAB(rs)bc I-II
R.A.09h 32m 9.7s (2000.0)
Dec.+21° 30' 02" (2000.0)
Apparent Size12.6×6.0'
Radial Velocity+476km/s
Magnitude9.7
Distance20.5 million light yrs.
Group of Galaxies -
Other IDsUGC5079, MCG4-23-9,
PGC27077
NGC2903 is a typical spiral galaxy only 1.5-degree south of lambda Leonis, a tip star of the Lion's sickle, so it's easy to find that by using the star as a pilot. This galaxy has visual magnitude 9.7, which is brighter than any other Messier's objects in the constellation.
You can appreciate an elongated multiple-armed spiral with small telescopes.
NGC2903 is about 20 million light years away.




NGC2872, NGC2874

Around NGC2911


Copyright(c) 2018 by Naoyuki Kurita, All rights reserved.
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