Sunspot data for 15 January 2023 of period 2023Q1: (PREV DAY - NEXT DAY)
| Sun230115_1021UTC_sketch.jpg | Sun230115_1032UTC.jpg |
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 |  Click here for the sharpened image. |
Despite force 8 winds I managed to do my observation. We had about 80% cumuli passing by at high speed. Transparency in between was reasonable, and the scintillation monitor reported good seeing on average. I made the following observation:
Observation date/time: 15 January 10:21 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 (340mm distance, 80mm diameter) Reference: Earth's rotation axis Exposure (transparency): 0.280ms Seeing (SSSMon): 1.5-2.0" (1.0" at best) =================================================================== Total number of sunspots: 53 | |
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