Sunspot data for 12 November 2023 of period 2023Q4: (PREV DAY - NEXT DAY)
| Sun231112_0928UTC_sketch.jpg | Sun231112_0932UTC.jpg |
|---|---|
 |  Click here for the sharpened image. |
Today we had about 60% slow-drifting cumuli in bands. Transparency in between was reasonable, and the scintillation monitor reported excellent seeing on average. I made the following observation:
Observation date/time: 12 November 2023 09:28 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 (343mm distance, 80mm diameter) Reference: Earth's rotation axis Exposure (transparency): 0.550ms (using 82nm bandwidth green filter) Seeing (SSSMon): 0.8-1.0" (0.5" at best) =================================================================== Total number of sunspots: 18 | |
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