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Alpha Centauri resolution and seeing test

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About this observation
Observer
Peter Anderson
Time of observation
16/05/2018 - 15:00
Object
Alpha Centauri resolution and seeing test
Observing location
Brisbane Australia
Equipment
150mm F8 achromat refr with 3X barlow
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Alpha Centauri Double star, Distance in 2018 ~4.6".  Mv 0.0 and 1.3.  These are 12 images (of 30 taken) to demonstrate the effect of 'seeing' and to test the resolution and alignment of the instrument by examining the diffraction discs. Exposures (at 2000 ISO) vary somewhat in length.  Images are inverted. In only a few was the atmosphere relatively steady.  The upper red fringe of the atmospheric dispersion effect is very apparent in those images with longer exposure.

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