Sunspot data for 20 May 2026 of period 2026Q2: (PREV DAY - NEXT DAY)
| Sun260520_1315UTC_sketch.jpg | Sun260520_1325UTC.jpg |
|---|---|
 |  Click here for the sharpened image. |
today started out grey, but around noon the stratus thinned and left some gaps to observe. Transparency in them was excellent, and the scintillation monitor reported reasonable to mediocre seeing on average. I made the following observation:
Observation date/time: 20 May 2026 13:15 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): 0.330ms (using 82nm bandwidth green filter) Seeing (SSSMon): 2.5-4.0" (2.0" at best) =================================================================== Total number of sunspots: 14 | |
InFINNity Deck... Astrophotography... Astro-Software... Astro Reach-out... Equipment... White papers...
Deep Sky... Solar system (Main)... Solar System (Asteroids)... Solar System (Meteors)... Solar System (Comets)... Man-made objects...
Sun Mercury Venus Moon Mars Jupiter Saturn Uranus Aurora Borealis