Sunspot data for 24 July 2026 of period 2026Q3: (PREV DAY - NEXT DAY)
| Sun260724_0959UTC_sketch.jpg | Sun260724_1008UTC.jpg |
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 |  Click here for the sharpened image. |
today started out grey, but by the end of the morning the sky cleared, although topped with thin cirrus and contrails. Transparency in between was excellent, and the scintillation monitor reported reasonable seeing on average. I made the following observation:
Observation date/time: 24 July 2026 09:59 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 (345mm distance, 80mm diameter) Reference: Earth's rotation axis Exposure (transparency): 0.430ms (using 82nm bandwidth green filter) Seeing (SSSMon): 2.5-3.5" (1.5" at best) =================================================================== Total number of sunspots: 29 | |
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