Sunspot data for 2 August 2023 of period 2023Q3: (PREV DAY - NEXT DAY)
| Sun230802_1150UTC_sketch.jpg | Sun230802_1153UTC.jpg |
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 |  Click here for the sharpened image. |
Today started out wet and grey, but around noon we had a few clear moments. Transparency was excellent, but the scintillation monitor could not report seeing due to lack of large clear periods (the seeing was, however, very good). I made the following observation:
Observation date/time: 02 August 2023 11:50 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 (351mm distance, 80mm diameter) Reference: Earth's rotation axis Exposure (transparency): 0.420ms (using 82nm bandwidth green filter) Seeing (SSSMon): not measured, but very good =================================================================== Total number of sunspots: 41 | |
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