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Community photo entitled Calcium-filtered sun on January 16 2026 by Eliot Herman on 01/16/2026 at Tucson, Arizona

Calcium-filtered sun on January 16 2026

On 01/16/2026 by Eliot Herman | Website | Tucson, Arizona

Calcium-filtered sun on January 16 2026.

Astrophysics 110-millimeter telescope and Lunt calcium module. ZWO monochrome camera.

ZWO stack and Photoshop.

Community photo by Lorraine

By Lorraine Boyd | 2026-01-13
Community photo by Sanidhya

By Sanidhya Pathak | 2026-01-16