Sunspot data for 29 September 2021 of period 2021Q3: (PREV DAY - NEXT DAY)
| Sun210929_1528UTC_sketch.jpg | Sun210929_1540UTC.jpg |
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Today we had a grey start with plenty rain. At the end of the afternoon it opened up to about 90% cumuli with occasional showers. Transparency was mediocre, seeing was excellent. I made the following observation:
Observation date/time: 29 September 15:28 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): 0.260ms Seeing (SSSMon): 1.5-2.0" =================================================================== Total number of sunspots: 12 | |
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