Sunspot data for 25 August 2021 of period 2021Q3: (PREV DAY - NEXT DAY)
| Sun210825_1028UTC_sketch.jpg | Sun210825_1038UTC.jpg |
|---|---|
 |  |
Today we had some 30% cumuli. Transparency was good, but seeing mediocre to poor. I made the following observation:
Observation date/time: 25 August 2021 @ 10:28 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 (351mm distance, 80mm diameter) Reference: Earth's rotation axis =================================================================== Total number of sunspots: 7 | |
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