· Adopt triplet objective features one element of ultra-low dispersion ED glass, obtain exceptional visual and astrophotographic performance.
· The EDPH Series 418mm f/5.5 76mm refractor excels at crisp and sharp wide field imaging.
· With 2.5" full frame reducer, it is a faster f/4.5.
Aperture: 76mm
Limiting magnitude: 11.2
Focal ratio: F5.5
Resolution: 1.5 arc seconds
Objective type: Triplet air-spaced APO (one is made of ultra-low dispersion ED glass)
Total length of tube assy: 333mm (indented)
Accessories: A pair of tube rings, a dovetail plate, a handle and a finderscope base
Tube outer diameter: 90mm
Net weight: 2.3kg (excluding tube rings and dovetail plate)
Total weight: 2.9kg (including tube rings and dovetail plate)
