Sunspot data for 8 January 2023 of period 2023Q1: (PREV DAY - NEXT DAY)

Sun230108_1003UTC_sketch.jpgSun230108_1006UTC.jpg





Click here for the sharpened image.
Today we had clear skies. Transparency was reasonable, but the scintillation monitor reported very good seeing on average. I made the following observation: 
Observation date/time:   08 January 10:03 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
Exposure (transparency): 0.280ms
Seeing (SSSMon):         1.2" (0.8" at best)

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Total number of sunspots:   39

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