Object Information

• Name/Designation: Messier 106 (NGC 4258) and Surrounding Galaxies

• Object Type: Spiral Galaxy Group

• Constellation: Canes Venatici

• Distance from Earth:
   Messier 106 & NGC 4248: ~22–23 million light-years
      Background galaxies: ~60+ million light- years

• Apparent Magnitude: Messier 106: ~8.4

• Angular Size: ~18 arcminutes

Imaging Info

• Date: May 19 & 23, 2023

• Location: Athens, Greece

• Frames: 258 × 60″ exposures (4h 18m)

• Camera Settings: Gain 101 | Temperature: -5 °C

• Bortle Scale: 8/9 (city sky)

Equipment & Guiding

• Imaging Telescope: Sky-Watcher Explorer 130PDS

• Imaging Camera: ZWO ASI533MC Pro

• Mount: Sky-Watcher EQ5 Pro

• Filter: Baader UV/IR Cut Luminance 2″

• Accessory: Baader 2″ MPCC Mark III Newton Coma Corrector

• Guide Scope: Artesky 32mm Mini Guide Scope

• Guide Camera: ZWO ASI120MM Mini

Software

• Astro Photography Tool (APT)

• PHD2 Guiding

• PixInsight

• BlurXTerminator

• NoiseXTerminator

• StarXTerminator