Sunspot data for 14 June 2025 of period 2025Q2: (PREV DAY - NEXT DAY)
| Sun250614_0834UTC_sketch.jpg | Sun250614_0839UTC.jpg |
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 |  Click here for the sharpened image. |
Today we had a few patches of stratocumuli. Transparency in between was excellent, and the scintillation monitor reported very good seeing on average. I made the following observation:
Observation date/time: 14 June 2025 08:34 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): 0.430ms (using 82nm bandwidth green filter) Seeing (SSSMon): 1.6-2.0" (0.8" at best) =================================================================== Total number of sunspots: 33 | |
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