Sunspot data for 11 August 2023 of period 2023Q3: (PREV DAY - NEXT DAY)
| Sun230811_0803UTC_sketch.jpg | Sun230811_0806UTC.jpg |
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 |  Click here for the sharpened image. |
Today we started with clear skies, but stratus and dense cumuli moved in quickly and covered the sky only minutes after the observation. Transparency in between was reasonable, and the scintillation monitor reported very good seeing on average. I made the following observation:
Observation date/time: 11 August 2023 08:03 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): 0.500ms (using 82nm bandwidth green filter) Seeing (SSSMon): 1.5-2.0" (1.0" at best) =================================================================== Total number of sunspots: 28 | |
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