Sunspot data for 7 July 2021 of period 2021Q3: (PREV DAY - NEXT DAY)

Sun210707_0841UTC_sketch.jpgSun210707_0853UTC.jpg


Today we had 50% cumuli with good transparency and reasonable seeing through which I managed to make the following observation.
Observation date/time: 07 July 2021 @ 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 (353mm distance, 80mm diameter)
Reference:             Earth's rotation axis

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Total number of sunspots:    1

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