Sunspot data for 19 June 2024 of period 2024Q2: (PREV DAY - NEXT DAY)
| Sun240619_1010UTC_sketch.jpg | Sun240619_1014UTC.jpg |
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 |  Click here for the sharpened image. |
Today started out grey, but by the end of the morning it cleared completely. Transparency was excellent, but the scintillation monitor reported mediocre seeing on average. I made the following observation:
Observation date/time: 19 June 2024 10:10 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 (349mm distance, 80mm diameter) Reference: Earth's rotation axis Exposure (transparency): 0.350ms (using 82nm bandwidth green filter) Seeing (SSSMon): 3.5-4.0" (3.0" at best) =================================================================== Total number of sunspots: 56 | |
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