Sunspot data for 12 July 2021 of period 2021Q3: (PREV DAY - NEXT DAY)
| Sun210712_0928_sketch.jpg | Sun210712_0934UTC.jpg |
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Today it was like yesterday, so mainly grey, but a small half-hour gap in the cloud-cover allowed some observations and imaging. Seeing was reasonable, but transparency was poor and both were varying quickly (now it is completely overcast again and so will be the rest of the day). I made the following observation.
Observation date/time: 12 July 2021 @ 09:28 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 (353mm distance, 80mm diameter) Reference: Earth's rotation axis =================================================================== Total number of sunspots: 2 | |
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