DayStar Technical Notes - Reaching F/30
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Please view all articles in Reaching F/30
Why do I need F/30? Category: Reaching F/30
Posted on Apr 23, 2011, 1:21 am Author: Jen Winter
F/30 is needed for best performance of narrow bandpass filters.
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Tagged Keywords: bandpass, focal, ratio, f/30, normal, wing, shift, blue, angle, hydrogen, alpha

Reaching F/30 with a Refractor Category: Reaching F/30
Posted on Apr 23, 2011, 12:25 am Author: Jen Winter
Reaching F/30 can be easily done on any refractor
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Tagged Keywords: Observing, Solar, telecentric, 2X, DayStar, Powermate, ERF, Aperture, Reduction, Stop down, mask, barlow, 4X

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