Astrophotography Open Cluster Planet Reflection Nebula

Astrophoto: Mars and Pleiades – Messier 45 – 01/23

A reprocessed astrophoto with Mars and Pleiades using an Olympus legacy lens.

In January 2023, Mars was on its loop and at the loops end, on the 11th of January, Mars came very close to the Pleiades.

A Pleiades – Mars – Astrophoto was in my mind for quite some time now. I wanted a somewhat wider field. But since I still do not own a full format camera, this FoV is really ok – at least for now.

It was cloudy all the time, for several weeks. But the 11th of January let me see stars. And it was windy … and there were high clouds every now and then … and real clouds were on the way. And my guiding configuration did not want to work – i changed some stuff and did’nt test.

Due to this situation, i started collecting photons without guiding and used 45s exposures. I could only use 70 out of 270. Too many high clouds I could not see with the naked eye.

The result is one with a lot of compromises, but since there is no 2nd chance for the moment, i am still very happy with it.


I reprocessed this astrophoto in december 2023. Here is the old result:

Mars and Pleiades - M45 - on 1/11/2023
Mars and Pleiades – M45 – on 1/11/2023 – shot with a legacy lens Olympus Zuiko Auto-T MC 2.8 135mm at 5.6.

High resolution on Flickr:

Mars and Pleiades

Technical overview

TelescopeOlympus Zuiko Auto-T MC 2.8
Focal Length135mm
Aperture ratio5.6
Erecting Lense
MountSkywatcher HEQ-5
Mount ControlINDI
Guiding Scope Focal Length
Guiding Camera
Guiding SoftwareEKOS, INDI
CameraCANON EOS M100
Methodfocal projection
Camera angle-30° (Stellarium)
Camera ControlEKOS, INDI, Gphoto2
Photography Date01/11/2023
Exposure-Time Lights88x45s
Correction framesFLATS, BIASES
SensitivityISO 800
Post Processing Date01/12/2023
Reprocessing Date12/12/2023
Stacking, IntegrationPixInsight
Post Processing SoftwarePixInsight
Image EditingAffinity Photo
Capture PlaceKoblenz, Germany
LightpollutionBortle 5
Scattered lightstrong

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