Sunspot data for 20 July 2022 of period 2022Q3: (PREV DAY - NEXT DAY)
| Sun220720_1058UTC_sketch.jpg | Sun220720_1101UTC.jpg |
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 |  Click here for the sharpened image. |
Today we started out fully overcast, which cleared slightly during the morning to a stratus of varying thickness and some small gaps. Transparency in the gaps was good, and the scintillation monitor reported reasonable seeing. I made the following observation:
Observation date/time: 20 July 10:58 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 (349mm distance, 80mm diameter) Reference: Earth's rotation axis Exposure (transparency): 0.190ms Seeing (SSSMon): 3.5" =================================================================== Total number of sunspots: 29 | |
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