Sunspot data for 22 August 2023 of period 2023Q3: (PREV DAY - NEXT DAY)
| Sun230822_1154UTC_sketch.jpg | Sun230822_1159UTC.jpg |
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 |  Click here for the sharpened image. |
Today started out fully overcast, but it soon cleared to about 60% cumuli. Transparency in between was excellent, but the scintillation monitor reported mediocre to poor seeing on average. I made the following observation:
Observation date/time: 22 August 2023 11:54 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): 0.430ms (using 82nm bandwidth green filter) Seeing (SSSMon): 4.5-5.0" (3.0" at best) =================================================================== Total number of sunspots: 12 | |
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