Sunspot data for 25 September 2023 of period 2023Q3: (PREV DAY - NEXT DAY)
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Today started out grey, but we had a short moment in which we had thin stratus, cirrus and contrails. Transparency was mediocre, and the scintillation monitor could not report seeing (but is was good). I made the following observation:
Observation date/time: 25 September 2023 09:02 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 (349mm distance, 80mm diameter) Reference: Earth's rotation axis Exposure (transparency): 0.600ms (using 82nm bandwidth green filter) Seeing (SSSMon): good, but not measured =================================================================== Total number of sunspots: 49 | |
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