| Mike Hosea |
| (Post Laureate) |
| 05/18/08 10:26 PM |
|
Re: Strange Results in Eyepiece FOV Comparisons
|
Quote:
I do, however see the utility of the "RFOV" concept. it allows you find an equivalent field stop and predict the true field of view of an eyepiece in any Telescope, even if you don't have access to the written specifications.
Here are calculated "RFOVs" for the various Nagler eyepieces: 77.6, 77.1, 81.0, 78.5, 81.9, 79.1, 77.6, 81.6, 77.6, 78.9, 79.4, 80.2, 78.6, 77.9. How are these numbers easier to use in the field or elsewhere than the effective field stop diameters that Tele Vue quotes?