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Uploaded 5-May-25
Taken 5-May-25
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Dimensions866 x 1388
Original file size1.23 MB
Image typeJPEG
Color spacesRGB
Date modified6-May-25 07:58
Mars and the Beehive Cluster May 4 2025

Mars and the Beehive Cluster May 4 2025

What a beautifully clear evening last night at the VCO. Like the subject title there was a buzz of activity. It was dusk when we arrived so we had to wait for more darkness.

I aligned the tracker very roughly at Polaris. As it turned out there was some alignment inaccuracy which resulted in some elongation of the stars. At this particular scale it's not very noticeable and an iteration of RC-Astro's Blurxtermintor makes it even less noticeable. Next time I'll take the time to do a real polar alignment.

Camera: Nikon D7200
Lens: Nikkor 300/4 AFS with TC 1.4x (equivalent focal length 630mm)
Sensor ISO: 400
Mount: Star Adventurer sidereal
Exposure: 8 seconds at f/5.6
Processing: 65 Light frames, no calibration frames, Pixinsight, BlurXterminator and Adobe Photoshop CC 2025