Sunspot data for 17 June 2022 of period 2022Q2: (PREV DAY - NEXT DAY)

Sun220617_0850UTC_sketch.jpgSun220617_0904UTC.jpg





Click here for the sharpened image.
Today we had patches of altocumulus, but with large clearings in between. Transparency was good, and the scintillation monitor reported exceptional seeing. I made the following observation: 
Observation date/time:   17 June 08:50 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): 0.180ms
Seeing (SSSMon):         1.5-2.0"

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Total number of sunspots:   38

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