Sunspot data for 23 June 2021 of period 2021Q2: (PREV DAY - NEXT DAY)
| Sun210623_1530UTC_sketch.jpg | Sun210623_1538UTC.jpg |
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Today it initially was fully overcast, but at the end of the day it cleared to light stratus, cirrus and some 50% cumuli. Seeing was poor, transparency mediocre. I made the following observation:
Observation date/time: 23 June 2021 @ 15:30 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: 1 | |
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