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Contains:  M 5, NGC 5904, The star 5Ser
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            Matteo Ambrosi
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Technical card

Dates:May 25, 2020

Frames: 54x150" ISO800

Integration: 2.2 hours

Darks: ~31

Flats: ~41

Bias: ~41

Avg. Moon age: 2.64 days

Avg. Moon phase: 7.71%

Basic astrometry details job: 3558349

RA center: 15h 18' 34"

DEC center: +2° 4' 58"

Pixel scale: 1.572 arcsec/pixel

Orientation: 297.180 degrees

Field radius: 1.040 degrees

Resolution: 3962x2642

Locations: Sandrà (Home), Castelnuovo del Garda, Verona, Italy

Data source: Backyard


Astrophotography from my back garden going on. This time the subject is M5, a globular cluster in the snake constellation.
Globular clusters are an important object of study since they contain very ancient stars, with a low amount of heavy elements,
for they were formed in the early stages of the universe formation. These clusters are not on the same galactic plane as the other stars, but in the galactic halo.
Not being subject to the arms tidal forces, they retained their cluster shape.
M5 supposedly contains from 100,000 to 500,000 stars in about 130 light years diameter and is 24,500 light years away from the earth.

Acquisition date: 25-26/05/2020

Telescope: Skywatcher 150/750
Guide scope: UltraGuide Artesky 60/240
Mount: Celestron AVX
Camera: Canon EOS 450d modified with Baader filter
Guide camera: Zwo Asi 224 MC
Filter: Optolong L-Pro
Coma corrector: Skywatcher coma corrector 2''
Lights: 54x150'' 800 ISO
Darks: 31x150''
Flats: 41
Biases: 41
Software: APT Astro Photography Tool, PixInsight



Matteo Ambrosi
License: None (All rights reserved)

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            Matteo Ambrosi