APM comacorrected 1.25" ED Barlow 2.67 x, designed by Gerd Duering/Germany
New Product at APM-Telescopes, Unique in the World
APM comacorrected 1.25" ED Barlow 2.67 x, designed by Gerd D?ring/Germany. The Barlow use the chinese ED Glas FK61 ( similar to Ohara FPL51), has blackenededges, a measured transmission von over 99% from 400 nm to 700 nm, optimized for F/4 Newtonian-Telescopes. The barlow has a negative focal length of - 62.9 mm and a working backfocuse of 105 mm from center last lens to focuse ( eyepiece field stop). You will need now a 1.25" eyepiece holer 104 mm long
On Stock now
Markus Ludes
APM-Telescopes
New Product at APM-Telescopes, Unique in the World
APM comacorrected 1.25" ED Barlow 2.67 x, designed by Gerd D?ring/Germany. The Barlow use the chinese ED Glas FK61 ( similar to Ohara FPL51), has blackenededges, a measured transmission von over 99% from 400 nm to 700 nm, optimized for F/4 Newtonian-Telescopes. The barlow has a negative focal length of - 62.9 mm and a working backfocuse of 105 mm from center last lens to focuse ( eyepiece field stop). You will need now a 1.25" eyepiece holer 104 mm long
On Stock now
Markus Ludes
APM-Telescopes
Attached Image:
clear skies
Markus Ludes
APM-Telescopes/Germany
