Sunspot data for 26 October 2025 of period 2025Q4: (PREV DAY - NEXT DAY)
| Sun251026_1253UTC_sketch.jpg | Sun251026_1255UTC.jpg |
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 |  Click here for the sharpened image. |
today started out with 50% fast moving cumuli with showers and force 5-6 winds, but in the afternoon the rain stopped making observations possible. Transparency in between was excellent, and the scintillation monitor reported good seeing on average. I made the following observation:
Observation date/time: 26 October 2025 12:53 UTC Telescope: GTT60 (Galileo Type Telescope) Focal length: 1490mm (plano convex singlet) Aperture: 60mm Stop: 30mm Eyepiece: -75mm (plano concave singlet, 24mm aperture) Observation type: projection (345mm distance, 80mm diameter) Reference: Earth's rotation axis Exposure (transparency): 0.430ms (using 82nm bandwidth green filter) Seeing (SSSMon): 1.8-2.2" (1.2" at best) =================================================================== Total number of sunspots: 15 | |
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