I can support what Brian wrote about the Delos. I have Delos 3.5 and 6 and have in my pretty well corrected 4" Apo compared to a 3.6 Takahashi Hi-LE, the Takahashi was sharper on Jupiter compared to the Delos 3.5. I have now a TeleVue Nagler Zoom 3-6 on loan and will compare that to the Delos.
The Delos are great on fuzzies with their larger field and very ergonomic eye reliefe, we have split Sirius with the 3.5 under outstanding conditions but on Jupiter the 3.6 Takahashi was crisper.
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