Sunspot data for 16 August 2023 of period 2023Q3: (PREV DAY - NEXT DAY)
| Sun230816_1444UTC_sketch.jpg | Sun230816_1447UTC.jpg |
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 |  Click here for the sharpened image. |
Today we had hazy skies with about 5% cumuli and some scattered cirrus. Transparency in between was very poor, and the scintillation monitor reported very poor seeing on average. I made the following observation:
Observation date/time: 16 August 2023 14:44 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 (350mm distance, 80mm diameter) Reference: Earth's rotation axis Exposure (transparency): 0.830ms (using 82nm bandwidth green filter) Seeing (SSSMon): 6.0-7.0" (3.5" at best) =================================================================== Total number of sunspots: 29 | |
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