Sunspot data for 25 October 2022 of period 2022Q4: (PREV DAY - NEXT DAY)
| Sun221025_0956UTC_sketch.jpg | Sun221025_0950UTC.jpg |
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 |  Click here for the sharpened image. |
Today we had about 80% cumuli, topped with some cirrus and, more importantly, a partial solar eclipse (22%). In order to get that eclipse imaged I deviated from my usual habit to first sketch then image, so I had seen the Sun for the past hour or so before I made the sketch. The sketch was made just a few minutes before maximum as more cloud was expected to drift in soon. Earlier images showed that no spots were missed behind the moon. The transparency varied a lot, and the scintillation monitor failed to report any figures due to the very short clearances. I made the following observation (but you may want to ignore this for above reasons):
Observation date/time: 25 October 09:56 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 (346mm distance, 80mm diameter) Reference: Earth's rotation axis Exposure (transparency): 0.240ms Seeing (SSSMon): unknown, but good =================================================================== Total number of sunspots: 11 | |
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