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I possess a Vixen GP102 refractor, which uses the Vixen Great Polaris equatorial mount and whilst I’d used a Baader

 I like to make daily drawings of the sun, using the projection method and a screen with a circle the

“I was interested in Brian Mitchell’s method of determining Prominence latitudes.  I would like to add an alternative which I

Our Star – The Sun Determining the Quality Number of a Sunspot Group Solar Observing Spectral Lines in the Sun