Sunspot data for 3 October 2021 of period 2021Q4: (PREV DAY - NEXT DAY)
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This day it was fully overcast, but in the early evening, just before sunset, a small clearance appeared. As a result of its very low altitude of about 4 degrees transparency was very poor and although seeing was reported very good (2"), it was impossible to get a sharp image. I made the following observation:
Observation date/time: 03 October 16:36 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 Exposure (transparency): 0.830ms Seeing (SSSMon): 2.0" =================================================================== Total number of sunspots: 5 | |
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