Caldwell 3, Mar’26

Caldwell catalog +1.

An uneventful session under a nearly full moon. So the focus here isn’t on an artistically valuable photo, but on adding another object to my Caldwell catalog.

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
CameraCanon EOS R(a)
FilterBaader UHC-L Booster (CMOS Optimized) 50.4mm
MountSkywatcher HEQ5 Pro, Belt and Hypertuned
Guiding EquipmentWilliam Optics Uniguide 50
Guiding CameraToupTek GPM462M
Photography Date3/2/2026
Exposure-Time Lights31x300s
Correction framesFLATS, DARKS
SensitivityISO 1600
Processing Date03/11/2026
Software StackStellarmate OS, PixInsight, Affinity Photo
Capture PlaceKoblenz, Germany

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