Sunspot data for 28 April 2021 of period 2021Q2: (PREV DAY - NEXT DAY)
| Sun210428_1755UTC_sketch.jpg | Sun210428_1758UTC.jpg |
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We had a lovely cloudless morning, but I was away for work. Upon arrival back home this evening there was a thick haze through which the Sun was hardly visible. Yet I managed to make the following observation, although I am unsure if it should be included given the poor conditions it was made under:
Observation date/time: 28 April 2021 @ 17:55 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 (340mm distance, 80mm diameter) Reference: Earth's rotation axis =================================================================== Total number of sunspots: 4 | |
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