Vixen ED 115 S APO Refractor

[Guest]

I have the Vixen ED 115S refractor. The optics are described as Extra Low Dispersion Optics. I am interested to know which type of glass is used to make the doublet objective. In the past I have owned several Skywatcher refractors with FPL 53 glass. These gave really good, pleasing views. I know that Takahashi refractors use fluorite to make the objective. Also Explore Scientific refractors use a different glass. 

The views from the Vixen are very good. 

Edited September 21, 2019 by Guest
ED not SD

[John]

Vixen never revealed the ED glass type they use for many of their models. This reviewer is of the opinion that it must be FPL-53 but thats from the performance that it gives rather than confirmation from the manufacturer I think:

https://astromart.com/reviews-and-articles/reviews/telescopes/refractors/show/vixen-ed115s-refractor

Takahashi refractors don't all use Fluorite by the way. Some have FPL-53 elements in them.

Are you pleased with the peformance of your Vixen ED115S ?

 

[Guest]

Are you pleased with the peformance of your Vixen ED115S ?

I have to say yes. Saturn always looks sharp and some detail revealed in atmosphere markings. This is in light polluted skies. Also the tube weight is light for it's size.