Sunspot data for 15 March 2023 of period 2023Q1: (PREV DAY - NEXT DAY)
| Sun230315_0845UTC_sketch.jpg | Sun230315_0849UTC_lum.jpg |
|---|---|
 |  Click here for the sharpened image. |
Today started out with about 10% cumuli. Transparency was excellent, but the scintillation monitor reported mediocre to poor seeing on average. I made the following observation:
Observation date/time: 15 March 08:45 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 (342mm distance, 80mm diameter) Reference: Earth's rotation axis Exposure (transparency): 0.500ms (using 82nm bandwidth green filter) Seeing (SSSMon): 2.5"-3.0" (1.5" at best) =================================================================== Total number of sunspots: 16 | |
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