Astrophotography Open Cluster

Astrophoto: Messier 35 and NGC 2158 – 03/22

Astrophoto: Messier 35 and NGC 2158. My Clear Sky 30. I like the result. Read what i have changed.

The Session-Story of Messier 35 and NGC 2158

Astrophoto: Messier 35 Clear Sky 30: It took months between my clear skies 29 and 30. I think 29 was in december for me. Meanwhile a few things changed at my setup.

  • I found my flattener distance to the Chip!
  • I am now able to expose 300s with my CANON EOS M100. The trick is, to make one 10s photo and then a series of 30, 40 or whatever 300s photos. Don’t know why it works 🙂
  • I got my USB-Hub attached to my Vixen.
  • Last but not least: I fixed the backlash on my HEQ-5 Pro and did the Rowan Belt Upgrade. I used the discription of astrophotograph Marten: Install the Rowan belt modification kit on your HEQ5 Pro mount – Frosth Astrophotography
    Thanks for the video! And also for the backlash video!

So, a lot of changes and here is the high resolution result on Flickr:

Open Clusters Messier 35 and NGC 2158

Lessons Learned

Yes, I learned some things, as always. The Flattener position really seems to be good now, although there is still one thing. That will be fixed at Clear Sky 33 🙂

What really makes me crazy, and this is a new problem is, dizzering makes my guiding crazy. I dont know why, bur after dithering my guiding needs heavy corrections.

Technical overview for Astrophoto: Messier 35 Clear Sky 30

TelescopeVIXEN ED80sf
Focal Length600mm
Aperture ratio7.5
Erecting LenseTSFlat2
FilterOptolong UV/IR Cut
MountSkywatcher HEQ-5
Mount ControlINDI
Guiding Scope Focal Length162 mm
Guiding Camera Chip4.8mm x 3.6mm, 8bit
Guiding Camera Resolution1280×960
Guiding SoftwareEKOS, INDI
Dithering3 pixel
CameraCANON EOS M100(a)
Methodfocal projection
Camera angle30° (as Stellarium)
Camera ControlEKOS, INDI, Gphoto2
Photography Date23.03.2022
Exposure-Time Lights30x300s
SensitivityISO 400
CalibrationframesFlats, Bias
Post Processing Date24.03.2022
Stacking, IntegrationPixInsight
Post Processing SoftwarePixInsight
Image EditingAffinity Photo
Capture PlaceKoblenz, Germany
LightpollutionBortle 5
Scattered lightstrong

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