Sunspot data for 13 March 2026 of period 2026Q1: (PREV DAY - NEXT DAY)
| Sun260313_1521UTC_sketch.jpg | Sun260313_1531UTC.jpg |
|---|---|
 |  Click here for the sharpened image. |
today started out grey, but in the afternoon it cleared to a hazy sky. Transparency was poor, but the scintillation monitor reported good seeing on average. I made the following observation:
Observation date/time: 13 March 2026 15:21 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 (343mm distance, 80mm diameter) Reference: Earth's rotation axis Exposure (transparency): 1.380ms (using 82nm bandwidth green filter) Seeing (SSSMon): 1.8-3.5" (0.8" at best) =================================================================== Total number of sunspots: 7 | |
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