Sunspot data for 28 April 2024 of period 2024Q2: (PREV DAY - NEXT DAY)
| Sun240428_0835UTC_sketch.jpg | Sun240428_0840UTC.jpg |
|---|---|
 |  Click here for the sharpened image. |
Today started out grey, but later in the morning it cleared to about 60% cumuli. Transparency in between was excellent, and the scintillation monitor reported good seeing on average. I made the following observation:
Observation date/time: 28 April 2024 08:35 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 (347mm distance, 80mm diameter) Reference: Earth's rotation axis Exposure (transparency): 0.400ms (using 82nm bandwidth green filter) Seeing (SSSMon): 1.5-2.0" (1.0" at best) =================================================================== Total number of sunspots: 23 | |
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