Sunspot data for 26 January 2025 of period 2025Q1: (PREV DAY - NEXT DAY)

Sun250126_0950UTC_sketch.jpgSun250126_0951UTC.jpg





Click here for the sharpened image.
Today cumuli of varying density. Transparency in between was mediocre, but the scintillation monitor reported very good seeing on average. I made the following observation: 
Observation date/time:   26 January 2025 09:50 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 (342mm distance, 80mm diameter)
Reference:               Earth's rotation axis
Exposure (transparency): 0.780ms (using 82nm bandwidth green filter)
Seeing (SSSMon):         1.6-1.8" (1.0" at best)

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Total number of sunspots:  16

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