Sunspot data for 20 March 2022 of period 2022Q1: (PREV DAY - NEXT DAY)
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Today we had a nice weather system above the Netherlands which covered us completely in clouds. In the afternoon the centre came over the observatory through which a watery Sun became visible. Transparency was very poor, seeing was reported good by the scintillation monitor. I made the following observation:
Observation date/time: 20 March 15:35 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 (343mm distance, 80mm diameter) Reference: Earth's rotation axis Exposure (transparency): 0.880ms Seeing (SSSMon): 2.0" =================================================================== Total number of sunspots: 3 | |
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