Sunspot data for 10 June 2021 of period 2021Q2: (PREV DAY - NEXT DAY)
| Sun210610_0800UTC_sketch.jpg | Sun210610_1021UTC.jpg |
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Today we had good seeing and good transparency (although not for all of the Sun). I made the following observation:
Observation date/time: 10 June 2021 @ 10:22 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 (353mm distance, 80mm diameter) Reference: Earth's rotation axis =================================================================== Total number of sunspots: 4 + one very large one | |
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