Sunspot data for 2 January 2023 of period 2023Q1: (PREV DAY - NEXT DAY)

Sun230102_1047UTC_sketch.jpgNo image available.
No image available.
Today we mainly had stratus and/or very dense cumuli, apart from a short moment before noon. After the sketch was made no imaging could be done due to upcoming cloud cover. I made the following observation: 
Observation date/time:   02 January 10:47 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 (340mm distance, 80mm diameter)
Reference:               Earth's rotation axis
Exposure (transparency): n.a.
Seeing (SSSMon):         n.a.

===================================================================
Total number of sunspots:   28

PREV DAY - NEXT DAY

Home Geodesy Navigation Astronomy Literature
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