I came into possession of a matched pair of Jaeger 83mm dia lens of f15 focal length.
Although a focal length this long is somewhat against current practice I thought it might make a good project.
As this project is a long one I thought rather than just put the odd bit in the “what did you do in your shop today” I would do a complete build blog in case it might be of interest to others.
I started by making a 3d model with the full light cone to give me all the dimensions and hopefully how I...
80mm long focal length refractor
Although a focal length this long is somewhat against current practice I thought it might make a good project.
As this project is a long one I thought rather than just put the odd bit in the “what did you do in your shop today” I would do a complete build blog in case it might be of interest to others.
I started by making a 3d model with the full light cone to give me all the dimensions and hopefully how I...
80mm long focal length refractor