Sunspot data for 8 June 2025 of period 2025Q2: (PREV DAY - NEXT DAY)
| Sun250608_1700UTC_sketch.jpg | Sun250608_1702UTC.jpg |
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 |  Click here for the sharpened image. |
Today started out wet and grey, but at the end of the afternoon we had clear but hazy skies. Transparency was poor, but the scintillation monitor reported good seeing on average. I made the following observation:
Observation date/time: 08 June 2025 17:00 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 (348mm distance, 80mm diameter) Reference: Earth's rotation axis Exposure (transparency): 0.830ms (using 82nm bandwidth green filter) Seeing (SSSMon): 2.5-3.0" (1.5" at best) =================================================================== Total number of sunspots: 19 | |
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