Quite so, William. All the factors you mentioned are important and have to be measured. Don
William H. Fite > Exactly, jimlux, this is readily possible. > > I find it interesting that no one has commented, one way or the other, on > the uncontrollable environmental variables I mentioned. Is this just > about > technology and not about validity? > > > > > On Tue, Nov 2, 2010 at 9:28 AM, jimlux <[email protected]> wrote: > >> Bob Camp wrote: >> >>> Hi >>> >>> Ok, I mis-understood the question. >>> >>> In my experience, you can have big buck (as in many thousands of >>> dollars) >>> optics and not see .2" holes at 800 yards. The bull's eye is a *lot* >>> bigger >>> than the hole the bullet made. >>> >>> 0.2" at 2400 ft is about 0.08 milliradian.. or 0.3 minutes of arc. >>> Your >> eye can resolve about 1 minute of arc... I'm not questioning your >> experience, but it seem that even a moderate power scope should allow >> you to >> see the holes. As I recall, the Rayleigh limit for resolution is >> something >> like 0.7 milliradian/mm of aperture, so 10-15 mm aperture would be in >> the >> right ballpark.. >> >> I can imagine needing more aperture than 3", though.. you're not >> interested >> in resolving a star, but something more akin to separating dots. >> >> >> _______________________________________________ >> time-nuts mailing list -- [email protected] >> To unsubscribe, go to >> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >> and follow the instructions there. >> > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > -- "Neither the voice of authority nor the weight of reason and argument are as significant as experiment, for thence comes quiet to the mind." R. Bacon Dr. Don Latham AJ7LL Six Mile Systems LLP 17850 Six Mile Road POB 134 Huson, MT, 59846 VOX 406-626-4304 www.lightningforensics.com www.sixmilesystems.com _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
