Sunspot data for 6 February 2025 of period 2025Q1: (PREV DAY - NEXT DAY)
| Sun250206_1053UTC_sketch.jpg | Sun250206_1100UTC.jpg |
|---|---|
 |  Click here for the sharpened image. |
Today started out grey, but it soon cleared to about 50% cumuli. Transparency in between was good, but the scintillation monitor reported mediocre seeing on average. I made the following observation:
Observation date/time: 06 February 2025 10:53 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 (341mm distance, 80mm diameter) Reference: Earth's rotation axis Exposure (transparency): 0.580ms (using 82nm bandwidth green filter) Seeing (SSSMon): 2.5-4.0" (2.0" at best) =================================================================== Total number of sunspots: 36 | |
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