Tag: Great Sagittarius cluster

M8 Lagoon nebula M20 Trifid nebula

Constellation Sagittarius is full of deep space objects. I think we all agree that the most beautiful one is the Lagoon nebula, accompanied by the Trifid nebula. I captured these nebulae already, but with a much longer focal length. This time I used a significantly shorter telescope – only 180 mm to reveal the other deep space objects. The bright star at the bottom left is the star Kaus Bolearis, where the archer has his head. This star is surrounded by the globular clusters: M22 Great Sagittarius cluster on the left and M28 on the top.

Technical details:

LensAskar FMA180 F4.5
CameraCanon EOS 6Da
MountiOptron Skyguider Pro
Exposure50x60s, ISO 1600

M22 Great Sagittarius Cluster

Messier 22, sometimes called Great Sagittarius Cluster is a globular cluster, visually located very close to the galactic core of the Milky Way. If we look in this direction by a telescope, the surrounding of this cluster is filled with many stars. The cluster itself contains approximately 100 000 stars and it has roughly 97 light-years in diameter. The region of the sky where is this cluster located is poorly visible from my home, therefore every time I travel south with my portable telescope, I capture some deep space objects in this region. This picture was taken under the dark skies of Kythira.

TelescopeNewton 150/600 mm
Aperture150 mm
Focal length570 mm
MountRainbow Astro RST 135
AutoguidingZWO 174MM, Guidescope 30 mm
CameraZWO 071 Pro @-0°C
CorrectorTS MaxField
Exposure59x180s, Gain 94, bin 1x1,