Tag: Cassiopeia

Double Cluster NGC869 and NGC884

September 3, 2019
Open cluster
3 Comments

Two clusters visually close to each other can be located between constellations Perseus and Cassiopeia.  The clusters are relatively young (12 million years) and they are 2700 light-years far from Earth.

The picture was captured during my travel to Karpathos where I had only single wind free night.

I know, the composition should be turned by 90°. I just simply forgot to twist the camera.

Technical details:

TelescopeNewton 150/600 mm
Aperture150 mm
Focal length630 mm
MountAvalon M-Zero
AutoguidingZWO 174MM, Guidescope 30 mm
CameraZWO 071 Pro @-5°C
CorrectorExplore Scientific HR
FiltersAstronomik L-1 - UV IR Block Filter
Exposure28x180s, Gain 94, bin 1x1,
Date2019-09-03

M103 Open Cluster

December 13, 2018
Open cluster
0 Comment


Messier 103 is an open cluster located in constellation Cassiopeia. With its distance 8500 light-year from Earth, this cluster is one of the most distant clusters from Messier’s catalogue.

The picture is a stack of 56 pictures, each 2 minutes long, i.e. nearly two hours of integration time. December is a month, which is rich with deep space objects, but it’s also rich with clouds. In whole December I got only single opportunity to take my telescope outside, therefore this is not the only deep space object, which I captured this night.

Technical details:

TelescopeNewton 254/1000 mm
Aperture254 mm
Focal length1000 mm
MountGemini G53f
AutoguidingZWO 174MM, TS 60/240 mm
CameraZWO 071 Pro @-20°C
CorrectorTS-Optics 2" 3-element MaxField
FiltersHutech IDAS LPS-D2
Exposure56x120s, Gain 94, bin 1x1,
Date2018-12-13

NGC 7635 Bubble Nebula

November 15, 2015
H II nebula
0 Comment

NGC 7635, known as Bubble Nebula is an HII region in the constellation Cassiopeia. Bubble shape structure is caused by the solar wind caused by a massive star.

Well, I must admit, the Hubble Space Telescope has a better resolution, but my telescope has a better price-performance ratio.

Telescope:Newton 254/1000 mm
Aperture:254 mm
Focal length:730 mm
MountGemini G53f
AutoguidingZWO 174MM, TS 60/240 mm
Camera:Moravian instruments G2 8300M @ -30C
Corrector:ASA 0.73 reducer
Filters:Baader Ha, OIII, SII
Exposure:39x Ha, 35x OIII, 32x SII, 300 s, bin 1×1