Trifid nebula M20 & open cluster M21 from La Palma

Date2017/07/20
LocationLa Palma / Spain
ObjectTrifid nebula (M20) & open cluster M21
CameraAtik383L+
Guidingyes, QHY5-II Mono via OAG
Telescope8
Barlow lensnone
MountEQ6 Syntrek
Cooling-10°C
Luminance8x 600s, bin: 1x1
Red7x 150s, bin: 2x2
Green7x 150s, bin: 2x2
Blue7x 150s, bin: 2x2
Dark2x
Flat10x
Total exposure~2h12m

Tonight I decided to image the Trifid nebula (M20)
which is quite “close” to the Lagoon nebula M8 from my last session. The seeing tonight was around ~2.4″ which could have been better – but certainly it was still sufficient.

Back in 2013 I already imaged the Trifid nebula with the same equipment but from Boeblingen. It is interesting to see the difference here.

For post-processing I used the free software DeepSkyStacker and GIMP. The full resolution images is available here.

Clear skies!

Astrophotography – Trifid Nebula (M20) & open cluster (M21)

The image is also available in full resolution.

Date2013/09/04
LocationBöblingen / Germany
ObjectTrifid Nebula (M20) & open cluster (M21)
CameraAtik383L+
Guidingyes, DMK31AU03.AS via OAG
Telescope8" GSO Newtonian
Barlow lensnone
MountEQ6 Syntrek
Cooling-15°C
Luminance6x 400s, bin: 1x1
Red6x 100s, bin: 2x2
Green6x 100s, bin: 2x2
Blue6x 100s, bin: 2x2
Dark5x
Flat-
Total exposure~1h10min.

Clear skies!

Last updated: June 20, 2022 at 10:31 am