Sunspot data for 26 March 2025 of period 2025Q1: (PREV DAY - NEXT DAY)
| Sun250326_1242UTC_sketch.jpg | Sun250326_1244UTC.jpg |
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 |  Click here for the sharpened image. |
Today started out grey, but around noon it cleared to patches of stratocumulus. Transparency was excellent, but the scintillation monitor reported mediocre seeing on average. I made the following observation:
Observation date/time: 26 March 2025 12:42 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 (343mm distance, 80mm diameter) Reference: Earth's rotation axis Exposure (transparency): 0.430ms (using 82nm bandwidth green filter) Seeing (SSSMon): 4.5-5.0" (3.0" at best) =================================================================== Total number of sunspots: 8 | |
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