Sunspot data for 30 September 2021 of period 2021Q3: (PREV DAY - NEXT PERIOD)
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Today we started with 90% cumuli, topped with thin stratus, which reduced to about 80% cumuli with patches of stratus and with the anticipation of becoming fully overcast within the next hour for the rest of the day. During the few clear moments transparency was good, seeing was good (excellent during imaging). I made the following observation:
Observation date/time: 30 September 09:06 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): 0.180ms Seeing (SSSMon): 3.0-3.5" =================================================================== Total number of sunspots: 10 | |
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