Sunspot data for 1 October 2025 of period 2025Q4: (PREV PERIOD - NEXT DAY)
| Sun251001_0842UTC_sketch.jpg | Sun251001_0845UTC.jpg |
|---|---|
 |  Click here for the sharpened image. |
today we clear skies, but with upcoming cirrus. Transparency was good, and the scintillation monitor reported good seeing on average. I made the following observation:
Observation date/time: 01 October 2025 08:42 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 (347mm distance, 80mm diameter) Reference: Earth's rotation axis Exposure (transparency): 0.480ms (using 82nm bandwidth green filter) Seeing (SSSMon): 2.0-2.5" (0.8" at best) =================================================================== Total number of sunspots: 45 | |
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