Deep Sky Object in Spring
NGC4565 (Galaxy in Coma Berenices)
|Date & Time: ||Mar 4 2017, from 24:27 to 25:04 JST(+0900)
|Composed 10 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 & 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...ISO6400, White Balance...Daylight|
NGC4565 is one of the brightest and largest galaxies without Messier's numbers scattered around the constellation of Coma Berenices.
The galaxy is fairly popular one because it's often quoted as a very typical example of the "edge-on" galaxy.
This edge-on galaxy is about 45 million light years away and has an apparent size in the thickness-direction of only 2 arc minutes, but has a length of more 15 arc minutes,
equivalent to the half of an apparent diameter of full-moon.
It might be easy to search the galaxy with the binoculars; you can recognize it as a narrow line in the conditioned sky.
|NGC4565 / Galaxy, type SA(s)b? sp I|
|R.A.||12h 36m 20.6s (2000.0)|
|Dec.||+25° 59' 20" (2000.0)|
|Distance||45 million light yrs.|
|Group of Galaxies||NGC4565 Group|
|Other IDs||UGC7772, MCG4-30-6, |
You will be able to enjoy the galaxy looks like the front-view of a plane with scopes.
Though this picture shows you a dark lane crossing, you might need a bit larger scope to see the lane with naked-eyes.
The galaxy has a long-short ratio of about 14:1. Almost all of typical galaxies have such a thin figure, of course including our Galaxy.