M92 (NGC 6341)

is a globular cluster of stars in the northern constellation of Hercules. M92 is at a distance of about 26,700 light-years away from Earth.

M92 is one of the brighter globular clusters in the northern hemisphere, but it is often overlooked by amateur astronomers because of its proximity to the even more spectacular Messier 13. It is visible to the naked eye under very good conditions. Among the Milky Way population of globular clusters, Messier 92 is among the brighter clusters in terms of absolute magnitude. It is also one of the oldest clusters.

Source: https://en.wikipedia.org/wiki/Messier_92

Photographs (March 2019) made in Zwardoń. A standard place of meetings of the Polish association of astronomy enthusiasts – Katowice dep.

Equipment: Canon EOS 6D, Sky-Watcher 200/1000 [mm] on the NEQ6 Pro.,

  • Stack: APP (7 best frames),
  • Processing: GIMP v2.10.14 + add-ons (Linux),
  • Lights: 7 x 88[s], ISO-1000; 30.3.2019,
  • Flats: 22 ISO-1000; 02.8.2019,
  • Bias: 20 ISO-1000; 02.8.2019
M92 (NGC 6341) – gromada kulista znajdująca się w gwiazdozbiorze Herkulesa

M13 – Cluster of Hercules

Same Light frames (made 30.3.2019) has been processed but with new technique.

M13 – Cluster of Hercules – Brightness is 5.8 Magnitude. The cluster’s diameter is 145 light years! The distance from the ground is 25.1 thousand light years.

Photographs (March 2019) made in Zwardoń. A standard place of meetings of the Polish association of astronomy enthusiasts – Katowice dep.
Equipment: Canon EOS 6D, Sky-Watcher 200/1000 [mm] on the EQ6 Pro.

Composition: APP (10 best frames and Flat and Dark + Bias frames)
Processing: GIMP v2.10.14 + add-ons (Linux)
Lights: 10 x 57[s], ISO-1600;

Comparative photo. Left shows new processing with a new method that I use today. Right, older, processed by the old method.

M13-Ten sam materiał ale dwie różne techniki obróbki

Full photo with new pethod of processing.

M13 – Gromada w Herkulesie