Deep Sky Object in Spring
NGC4559 (Galaxy in Coma Berenices)
|Date & Time: ||Mar 24 2018, from 25:23 to 26:08 JST(+0900)
|Composed 8 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)|
|Sensitivity...ISO4000, White Balance...Daylight|
A galaxy of NGC4559 belongs to a constellation of Coma Berenices, and the galaxy is lying just 2 degrees of NGC4565,
which is a very popular edge-on galaxy. NGC4559 has major axis and visual magnitude of 10 arc minutes and 10.2, respectively.
Actually these size and brightness are almost equal to those of NGC4565.
A galaxy of NGC4565 is very familiar as an example of edge-on appearance, while NGC4559 isn't so well known because of its figure without characteristics.
|NGC4559 / Galaxy, type SAB(rs)cd II-III|
|R.A.||12h 35m 57.3s (2000.0)|
|Dec.||+27° 57' 53" (2000.0)|
|Distance||30 million light yrs.|
|Group of Galaxies||NGC4631 Group|
|Other IDs||UGC7766, MCG5-30-30|
Though the galaxy will show you a simple lump of dimmed light with scopes,
indistinct arms are detected on films and it's understood that the galaxy has spiral structure a bit tilted from being edge-on.