M 94

About image 

M94 is a 9 magnitude spiral galaxy in Canes Venatici constellation, located at a distance of about 16 million light years.
The central component of this galaxy is an early-type Sab galaxy, which shows a very bright nucleus and hints of spiral arms characterized by flocculent pattern of filament of gas and dust with some star forming regions.
Around the central component, it is visible a larger and much fainter halo which shows also some active areas: so astronomers did hypothesis that this outer ring was formed by accretion of a companion galaxy.
Several other remote galaxies are visible in the field, some of them also through M94 disk.

Technical data
Optic         GSO RC12 Truss - Aperture 304mm, focal lenght 2432mm, f/8
Mount       10Micron GM2000 HPSII
Camera        ZWO ASI 2600 MM Pro with filter wheel 7 positions
Filters        Astrodon Gen2 E-Serie Tru-Balance 50mm unmounted LRGB  
Guiding system   ZWO OAG-L with guide camera ASI 174MM
Exposure details  L 79x300" bin3 -15C

             R 14x300" bin3 -15C
             G 14x300" bin3 -15C
          B 14x300" bin3 -15C

                all gain 100
Total integration  10h5'
Acquisition      Voyager, PHD2
Processing      Pixinsight 1.8, Photoshop CS5, StarXTerminator, NoiseXTerminator, BlurXTerminator
SQM-L       21.15   
Location       Promiod (Aosta Valley, Italy), own remote observatory
Date           20 March, 18 April 2023


© Roberto Marinoni 2019 - All rights reserved