Celestial hemisphere:  Southern  ·  Constellation: Scorpius (Sco)  ·  Contains:  M 4  ·  NGC 6121
M4 - Globular Cluster, Derryk
M4 - Globular Cluster
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M4 - Globular Cluster

M4 - Globular Cluster, Derryk
M4 - Globular Cluster
Powered byPixInsight

M4 - Globular Cluster

Equipment

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Acquisition details

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Description

M4 (NGC6121) is a globular star cluster located in Scorpius at about 7,200 light years away.



Taken April 2019 from Campbell, CA, USA. Sky: 18.80 mag/arcsec^2



Total integration: 180 mins (3 hrs)



Details, Equipment, & Software:

Telescope: Astro-Tech AT10RCT (FL2000mm f/8)

Camera: SBIG STF-8300m (-10°C)

Filter: Astrodon36mm RGB

Guide: OAG-8300 with QHY5III174

Focuser: Moonlite CSL w/ high res stepper motor

Mount: Astro-Physics AP1100GTO

Capture: Sequence Generator Pro

Frames:

Astrodon R: 12x300s

Astrodon G: 12x300s

Astrodon B: 12x300s

Stacking/Final Processing: Pixinsight

Comments

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M4 - Globular Cluster, Derryk

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Messier Objects