Deep Sky Object in Spring
NGC5253 (Galaxy in Centaurus)



Date & Time: May 2 2025, from 23:15 to 24:00 JST(+0900)
Composed 12 shots with 4 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



NGC5253 / Galaxy, type Im: pec
R.A.13h 39m 55.7s (2000.0)
Dec.-31° 38' 31" (2000.0)
Apparent Size5.0×1.9'
Radial Velocity+416km/s
Magnitude10.9
Distance10.9 million light yrs.
Group of GalaxiesNGC5128 Group
Other IDsUGCA 369, ESO 445-4
MCG -5-32-60, PGC 48334
IRAS 13370-3123
It is an irregular galaxy located near the boundary with Hydra. It can be found slightly less than 2 degrees southeast of M83, the bright spiral galaxy in Hydra. This peculiar galaxy has a major axis of 5 arcminutes and a brightness of 11th magnitude, featuring a central nucleus elongated in the north-south direction. It is part of a galaxy group that includes M83 and Centaurus A (NGC 5128) and is approximately 11 million light-years away. NGC 5253 is the closest example of a galaxy type known as a "Blue Compact Galaxy." Galaxies of this type are characterized by containing large star-forming regions composed of young, hot, massive stars, while remaining small in overall galaxy size.




NGC5248

NGC5363, NGC5364


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