Rosette Nebula, Mar’21

2023 reprocessed picture of Caldwell 49, the Rosette Nebula, based on the data from 2021.

Two important evenings for me. I had a lot of time for exposures and collected a lot of data, but the result shows where to focus on in the next months.

Astrophoto NGC 2237 Rosette Nebula Clear Skies 8+9.
I had two really nice evenings working on the Rosette Nebula. No real problems and in the end i was quite happe with the final result.

On this astrophoto the used EOS camera was not yet astromodified. I really like the version of this nebula much more with the OWB filter installed than the pictures without.

Lessons Learned

I collected a lot of light and stacked and processed it afterwards. I was quite happy with the results and the response on social networks were awesome. Now, with a look back there are a lot of problems to work on in the next months.

  • A lot of noise!
  • So i need even more photons.
  • longer exposures
  • dithering – something i started reading at.

I still was struggling with the bad support of my CANON M100 in the astrophoto tools.

Technical overview

TelescopeVixen ED80sf
Focal Length600mm
MountHEQ5 Pro
Goto-ControlCartes du Ciel
Mount ControlASCOM
Guiding Scope Focal Length162 mm
Guiding Camera Chip4.8mm x 3.6mm, 8bit
Guiding Camera Resolution1280×960
Guiding SoftwarePHD2, ASCOM Pulse
Dithering
CameraCANON EOS M100
Methodfocal projection
Camera ControliOS App CC&C
Photography Date03/05/2021
03/06/2021
Exposure-Time Lights90x150s
SensitivityISO 1250
2023 ReprocessingPixInsight
Capture PlaceKoblenz, Germany
LightpollutionBortle 5

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