Big apo news

[John]

If FPL-53 is used it tends to get mentioned in the spec because it's expensive. If it's not specified then it's much more likely that the ED glass is FPL-51, FPL-55, FCD1 or similar.

 

[FLO]

42 minutes ago, gorann said:

... could it be that using two cheaper ED elements (like FPL-51 or FCD-1) is novel way of makig great triple apos, if that is what TS and FLO are doing (they do not state what ED glass they are using)?

At FLO/IKI we have two StellaMira triplet refractors in the pipeline. Both will have an optical design that includes two ED elements using FPL53 and FPL51 glass. 

HTH, 

Steve 

[gorann]

15 hours ago, FLO said:

At FLO/IKI we have two StellaMira triplet refractors in the pipeline. Both will have an optical design that includes two ED elements using FPL53 and FPL51 glass. 

HTH, 

Steve 

Interesting! Could you tell us more about them Steve, like FL and aperture?

[FLO]

16 minutes ago, gorann said:

Interesting! Could you tell us more about them Steve, like FL and aperture?

We revealed the first, a 104mm f6.25 triplet manufactured for us by LongPerng in Taiwan, at IAS. It will be the telescope used at our IKI Observatory in Spain. It is still a work in progress (currently we have only beta models) but our first delivery of finished 104mm telescopes is scheduled to arrive mid-Dec.  

Not sure how close we are to revealing the second and third models but if you 'Follow' us or the Sponsor Board you will know as soon as we post info. 

HTH, 

Steve