Sunspot data for 16 April 2024 of period 2024Q2: (PREV DAY - NEXT DAY)
| Sun240416_0831UTC_sketch.jpg | Sun240416_0834UTC.jpg |
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 |  Click here for the sharpened image. |
Today started out wet and grey, but later in the morning the sky cleared to about 80% cumuli with scattered showers. Transparency in between was excellent, and the scintillation monitor reported reasonable seeing on average. I made the following observation:
Observation date/time: 16 April 2024 08:31 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 (346mm distance, 80mm diameter) Reference: Earth's rotation axis Exposure (transparency): 0.430ms (using 82nm bandwidth green filter) Seeing (SSSMon): 2.5-3.0" (1.5" at best) =================================================================== Total number of sunspots: 45 | |
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