Sunspot data for 31 January 2023 of period 2023Q1: (PREV DAY - NEXT DAY)
| Sun230131_1136UTC_sketch.jpg | Sun230131_1304UTC_lum.jpg |
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 |  Click here for the sharpened image. |
Today we had large patches of stratus with some clearances in between. Transparency during those moments was mediocre, and the scintillation monitor reported mediocre to poor seeing on average. I made the following observation:
Observation date/time: 31 January 11:36 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 (341mm distance, 80mm diameter) Reference: Earth's rotation axis Exposure (transparency): 0.700ms (using 82nm bandwidth green filter) Seeing (SSSMon): 2.5-4.0" (1.5" at best) =================================================================== Total number of sunspots: 10 | |
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