Caldwell 5, Mar’26

The last color astrophotograph taken with my Canon EOS R?

An astrophotograph that I created over two sessions. Session 1: RGB with my Canon EOS R. Session 2: luminance with my SkyEye mono camera.

I have since ordered a cooled full-frame OSC astro camera, so I can expect to capture the color channels with my new camera in the future.

High-resolution on Astrobin:

The high-resolution astrophoto on Astrobin with a wealth of additional information.

The annotated image:

Session Details:

TelescopeBaader Apo 95 Travel Companion
Focal Length590mm
Erecting LenseBaader M68 Field Flattener
CameraToupTek SkyEye62AM
FilterBaader UHC-L Booster (CMOS Optimized) 50.4mm
Baader Luminanz (CMOS Optimized) 50.4mm
MountSkywatcher HEQ5 Pro, Belt and Hypertuned
Guiding EquipmentWilliam Optics Uniguide 50
Guiding CameraToupTek GPM462M
Photography Date03/05/2026 (RGB)
03/07/2026 (Lum)
Exposure-Time LightsRGB 31x300s
L 60x300s
Correction framesFLATS, DARKS
SensitivityGAIN 100, Offset 125, ISO 1600
Processing Date03/08/2026
Software StackStellarmate OS, PixInsight, Affinity Photo
Capture PlaceKoblenz, Germany

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