Measurement Report 102 mm ED refractor

We had our ED 102 refractor sent in for an optical measurement - you can find the results here:

2 lenses, fully coated objectiv with 102 mm aperture and 714 mm focal lenght

 resolving power: 1,12“

 Vis. limit 11,75 mag
 

Test with the GMK

intrafocal

K-Star

extrafocal

Startest with 20µ Pinhole in the focus with a 2,5 mm eyepiece and color-filters
For the F-line  blue. = 486.1 nm - for the F-line  green. = 546.1 nm  for the F-line  red. = 656.3 nm
 

Ronchi

                        Interfeogramm

Phasecontrast

3 D WAVEFRONT RELIEF

Height - Graphic: peak-point = 172nm

Interferometric results

Spectrum regarding to Rutherford and Vogel

11/26/2007