Posts Tagged iOptron

The Apennines Mountains

Taken using my 150mm Rumak-Maksutov and the same ZWO ASI 432MM camera I used for the previous Sun picture.

I added a 2x Televue Barlow in the imaging train.

Taken on 2026 May 25th at 4:12 UTC.

It was processed in Photoshop from two pictures, each stacked from about 500 frames.

The lunar Apennine mountain range along the eastern shore of Mare Imbrium, captured 25 May 2026 at 04:12 UTC with a 150mm Rumak-Maksutov and ZWO ASI 432MM

About the Image

This view looks across the eastern shore of Mare Imbrium. The Montes Apenninus — the lunar Apennines — form the rugged range sweeping across the lower half of the frame, marking the southeastern border of the mare. A few landmarks worth picking out:

  • Archimedes — the large, smooth-floored crater near the centre, at the northwestern foot of the Apennines.
  • Aristillus and Autolycus — the pair just above and to the right of Archimedes, with Aristillus showing bright ejecta and central peaks.
  • Cassini — above and right of centre, recognisable by the smaller crater sitting on its flooded floor.
  • Plato — the dark-floored crater at upper left, on the northern shore beside the terminator.
  • Vallis Alpes (the Alpine Valley) — the straight cleft slicing through the Montes Alpes near the top.
  • Aristoteles and Eudoxus — the prominent crater pair along the right edge.

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Moon First Quarter – December 2025

On the night of December 29, 2025, I captured the Moon at first quarter from Concord, California. Conditions were favorable for lunar imaging, and the result is this composite assembled from three separate pictures.

Equipment & Capture Details

The image was taken using an iOptron 150mm Rumak-Maksutov telescope paired with a ZWO ASI 432MM monochrome camera. Each of the three panels was captured with 500 frames, which were then stacked and sharpened using AutoStakkert. The final composite was assembled at 02h51 UTC.

Moon at first quarter captured with an iOptron 150mm Rumak-Maksutov telescope and ZWO ASI 432MM camera, December 2025

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