Daily Archives: April 28, 2015

Spiral galaxy Messier 106, NGC 4258


Messier 106 (also known as NGC 4258) is a spiral galaxy in the constellation Canes Venatici. It was discovered by Pierre Méchain in 1781. M106 is at a distance of about 22 to 25 million light-years away from Earth. It is also a Seyfert II galaxy. Due to x-rays and unusual emission lines detected, it is suspected that part of the galaxy is falling into a supermassive black hole in the center. NGC 4217 is a possible companion galaxy of Messier 106.

Imaging telescopes or lenses: Gso RC 10″ GSO
Imaging cameras: FLI MicroLine 8300 CCD-camera FLI
Mounts: Astro-Physics Mach1AP GTO with GTOCP3
Guiding telescopes or lenses: 90mm Guidescope Guidescope
Focal reducers: Astro Physics CDDT67
Software: Photoshop CS 6 Photoshop CS6, Pixinsight 1.8
Filters: Baader 2″ Green,  Baader 2″ Blue, Baader 2″ Red,  Baader 2″ Lum
Accessories: Starlight Xpress lodestar 2
Resolution: 3084×2058
Dates: April 20, 2015
Baader 2″ Blue: 10×300″ -35C bin 2×2
Baader 2″ Green: 9×300″ -35C bin 2×2
Baader 2″ Lum: 14×600″ -35C bin 1×1
Baader 2″ Red: 10×300″ -35C bin 2×2
Integration: 4.8 hours
Avg. Moon age: 1.37 days
Avg. Moon phase: 2.09%
RA center: 184.756 degrees
DEC center: 47.297 degrees
Pixel scale: 0.767 arcsec/pixel
Orientation: -5.667 degrees
Field radius: 0.395 degrees
Locations: Home Observatory, Home, Worcestershire, United Kingdom
Author: Patrick (Paddy) Gilliland

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