Sunspot data for 31 August 2023 of period 2023Q3: (PREV DAY - NEXT DAY)
| Sun230831_1400UTC_sketch.jpg | Sun230831_1407UTC.jpg |
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 |  Click here for the sharpened image. |
Today we had some 30% cumuli, topped with some cirrus. In between transparency was good, but the scintillation monitor reported mediocre to poor seeing on average. I made the following observation:
Observation date/time: 31 August 2023 14:00 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 (351mm distance, 80mm diameter) Reference: Earth's rotation axis Exposure (transparency): 0.450ms (using 82nm bandwidth green filter) Seeing (SSSMon): 4.5-5.0" (3.0" at best) =================================================================== Total number of sunspots: 15 | |
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