Sunspot data for 2 October 2021 of period 2021Q4: (PREV DAY - NEXT DAY)

Sun211002_0841UTC_sketch.jpgSun211002_0844UTC.jpg


Today it will be fully overcast, but we started with a small clearance topped with some stratus during which transparency was quite poor and seeing was reasonable. I made the following observation: 
Observation date/time:   02 October 08:41 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 (351mm distance, 80mm diameter)
Reference:               Earth's rotation axis
Exposure (transparency): 0.530ms
Seeing (SSSMon):         4.0-5.0"

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Total number of sunspots:   4

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