Sunspot data for 30 September 2023 of period 2023Q3: (PREV DAY - NEXT PERIOD)

Sun230930_0909UTC_sketch.jpgSun230930_0913UTC.jpg





Click here for the sharpened image.
Today we had clear skies with the odd cumulus. Transparency was reasonable, and the scintillation monitor reported good seeing on average. I made the following observation: 
Observation date/time:   30 September 2023 09:09 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): 0.550ms (using 82nm bandwidth green filter)
Seeing (SSSMon):         2.5-3.0" (1.2" at best)

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Total number of sunspots:  26

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