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Astrophotography Galaxy

Astrophoto: Leo I Dwarf Galaxy – UGC 5470 – 03/22

Rarely has the new workflow made such a difference. The small companion of the Milky Way, the dwarf galaxy Leo I. Barely visible next to the star Regulus, also known by the beautiful designation BD +12° 2149, according to the Bonner Durchmusterung.

One of the most distant satellite galaxies of the Milky way. The frames were shot with an EOS M100(a) at a 600mm refractor telescope. Not a beautiful picture, but the brights star Regulus makes it hard to work Leo I out.

High resolution on Flickr:

Leo I Dwarf

Processing Workflow 2022 vs. 2024

Technical overview

TelescopeVIXEN ED80sf
Focal Length600mm
Aperture ratio7.5
Erecting LenseTSFlat2
FilterOptolong UV/IR Cut
MountSkywatcher HEQ-5
Goto-ControlEKOS
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 angle
Camera ControlEKOS, INDI, Gphoto2
Photography Date03/25/2022
Exposure-Time Lights38x300s
Correction framesFLATS, BIASES
SensitivityISO 400
Processing Date03/26/2022
Reprocessing Date01/02/2024
Stacking, IntegrationPixInsight
Processing SoftwarePixInsight
Reprocessing SoftwarePixInsight
Image EditingAffinity Photo
Capture PlaceKoblenz, Germany
LightpollutionBortle 5
Scattered lightstrong

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