Sunspot data for 27 September 2021 of period 2021Q3: (PREV DAY - NEXT DAY)
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Today it was mainly fully overcast, but at the end of the day the sky cleared, although some 30% cumuli remained. Transparency was poor, seeing was good. I made the following observation:
Observation date/time: 27 September 16:17 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): 0.300ms Seeing (SSSMon): 2.0-2.5" =================================================================== Total number of sunspots: 4 | |
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