Tag Archives: opdyke

From The Astrophotography Group

Posted on January 3, 2026 by ST Editors

C/2025 A6 (Lemmon) taken by Daniel Opdyke Telescope: Atrotech AT 72ED II 72mm aperture 430mm focal length f/6Mount: Iopteron CEM 25 hypertunedExposures: 60 subframes @ 60 sec each over 1 nights for 1 hour of integration; ASI533MC-P; … Continue reading →

Posted in January 2026, Sidereal Times | Tagged lemmon, opdyke | Leave a comment

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Tag Archives: opdyke

From The Astrophotography Group

More about AAAP

Affiliated Organizations

Interested in Becoming a Keyholder?

Announcements

Slides from Lectures

Light Ordinances (Example)

Subscribe to Sidereal Times:

Recent Posts

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Monthly Issues

Meta