Binary stars for December.

Some class targets and colours here. Included are the RA and DEC and the SAO number . These are possible with light pollution. Preferably using a refractor ( proper scope), 4″ of aperture giving maximum colour. I have managed down to 1.1″ using a 150mm achro. This is limited by seeing at x216.

Usually slight defocussing has opened up diffraction rings. The results were surprisingly better in the 127mm , focussing snapping into place. img_4174img_4173

Given a bit of time I’ll fettle a guide to observing binaries and some details of the finest of these currently on view under ,

Clear Skies !

Nick.

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