Quote:
Originally posted by Dave47tuc
Maybe you can tell me why?
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The lower usable magnification of the smaller scope requires further background darkening from the filter for increased contrast. Where as the the 10" can support greater magnifications that will darken the bg to aid contrast
I have a Thousand Oaks 2" LP-2 filter that I use frequently with my 100mm refractor from my atrociously light polluted city/suburban front yard. The gain in contrast is easily noticeable.