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Sun disc in Ca-H light

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About this observation
Observer
Raffaello Braga
Time of observation
18/07/2017 - 05:50
Object
Sun
Observing location
Milan
Equipment
75mm OG
Daystar Quark H
Chameleon mono CCD
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I made use of a 150mm achromatic refractor stopped down to 75mm for better correction in Ca-H light.

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