Sunspot data for 18 April 2022 of period 2022Q2: (PREV DAY - NEXT DAY)
| Sun220418_1255UTC_sketch.jpg | Sun220418_1301UTC.jpg |
|---|---|
 |  |
This morning we had a narrow band of cirrus over the observatory, just a few hundred metres wide, but it took hours to disappear. After that we had clear skies for a few hours. Transparency was excellent, but the scintillation monitor reported mediocre seeing. I made the following observation:
Observation date/time: 18 April 12:55 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): 0.150ms Seeing (SSSMon): 4.0-5.0" =================================================================== Total number of sunspots: 13 | |
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