| Gary Fuchs |
| (scholastic sledgehammer) |
| 06/30/09 02:03 PM |
|
Re: A new refractor concept
|
John wrote
Quote:
The scope is unique in that it has an enormous depth of focus ranging from infinity to a spot of tape tacked to the front of the Objective
Could you explain exactly what you mean by "depth of focus". The term seems to have at least two definitions.
Also, is the difference between your Hypo and the 1828 design described here mainly the use of the achromat?
Gary