Meade 305 ƒ/10.4 LX200 • Royce 250 ƒ/19 Dall Kirkham • AstroTech 250 ƒ/8 RC • AstroTech 250 ƒ/4 "RFT" Newtonian • Meade 80 ƒ/6 ED APO • TEC 140 ƒ/7 APO • Orion 180 ƒ/15 Mak Cass ... Denkmeier II binoviewer - Nikon 8x60 binocular
Astronomical Files from Black Oak Observatory
Quote:well, wilfried, a perceptual psychologist can explain to you why the conception of "conclusive results" requires stimulus, presentation and motivational control that volunteer data and naturalistic conditions cannot provide. the issue in perceptual research is never whether you can split two overlapping distributions but, given the difference in means and the variances around the means, whether the split is informative about perception or predictive of task performance in a new sample of observers. i eagerly await reports on those two points from any research effort, because those are the only criteria that matter...
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Quote:i have no use for sissy's "rule" endeavor or for her paint store color descriptions,...
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Quote:Quote:i have no use for sissy's "rule" endeavor or for her paint store color descriptions,...
Wow! To be so knowledgeable and well writen (except for your lack of the proper use of capital letters), only to end it on such a sour note. I would be ashamed.
Quote:Bruce, there's a problem for you with one of your listed observers - RTA Innes. I'm currently working on a detailed study of him, and your listing of telescopes doesn't fit.
Quote:Rossiter interestingly gives parameters for the doubles listed - he adopted an approach similar to Aitken, requiring doubles to be within certain separation limits to be recorded. So, in general, he required the limit for mag 9.0 to be within 5.0"; for mag 10.0, within 3.2"; etc. The formula was log d = 2.5 - 0.2m (d in arcseconds, m is combined visual mag).
Quote:Bruce, appreciate your effort to keep a RoT as simple as possible snd I found it an excellent starting point for my own research in this area but I had to move on as it failed in the field test I made with a meanwhile large number of limit observations.
Quote:Bruce, nice to see someone taking up a project I commented on a year or two ago, then didn't attempt - in part, because it meant re-doing Lewis, this time with modern photometry to improve the results for unequal pairs.