Sunspot data for 16 October 2021 of period 2021Q4: (PREV DAY - NEXT DAY)

Sun211016_1129UTC_sketch.jpgSun211016_1131UTC.jpg


This morning it was fully overcast, just after noon a large clearance appeared. Transparency was good, seeing were mediocre. I made the following observation: 
Observation date/time:   16 October 11:29 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 (347mm distance, 80mm diameter)
Reference:               Earth's rotation axis
Exposure (transparency): 0.180ms
Seeing (SSSMon):         3.0"-3.5"

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Total number of sunspots:   1

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