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Messier 58 (also known as M58 and NGC 4579) is an intermediate barred spiral galaxy with a weak inner ring structure located within the constellation Virgo, approximately 68 million light-years away from Earth. 

It is one of the four barred spiral galaxies that appear in Messier's catalogue.
Like many other spiral galaxies of the Virgo Cluster, Messier 58 is an anemic galaxy with low star formation activity concentrated within the galaxy's optical disk.

(text adapted from Wikipedia)

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 34x300" bin3 -20C

             R 18x300" bin3 -20C
             G 18x300" bin3 -20C
          B 18x300" bin3 -20C
Total integration  7h20'
Acquisition      Voyager, PHD2
Processing      Pixinsight 1.8, Photoshop CS5
SQM-L       21.16   
Location       Promiod (Aosta Valley, Italy), own remote observatory
Date           24/26 March, 5 April 2022


© Roberto Marinoni 2019 - All rights reserved