Hi Smyth.
I will probably open a whole can of worms here , but here goes .
Over the last few months Peter ( StardrifterWA ), Simmo and myself have had the best run of weather ever and have been out most weekends using many different scopes , APO refractors 65 , 90 and 110mm , Achro refractor 127mm , Dobs 10-16 inch and SCT's 8 and 9.25 inch .
So between us we have a good selection of scopes .
On the eyepieces we have , between us , an Orthoscopic set , 6-25mm , TV radian set 3mm-18mm , TV Pans 19-35mm , TV naglers of all sizes and types , Delos's and Ethos's in all sizes .
One thing is emerging that's seen by us all is the best planetary eyepieces in this mix are the Orthoscopic's closely followed by the Radians .
It is becoming obvious to all 3 of us that in any given scope the Delos are NOT
a good planetary eyepiece and for the money there are better planetary eyepieces out there .
These excel at looking at smaller star clusters and double stars at high magnifications , perfect for this .
We have been testing , observing Jupiter , Mars and Saturn for many , many hours over 3 months now and it really hit home this point last Saturday night at our dark sky site when the seeing conditions were essentially perfect and Simmo's 10 inch showed Mars as good as I have ever seen it , the orthoscopics's are the weapon of choice for planetary viewing sorry to say .
Its a shame that CircleT in japan have stopped producing them but there are still a few places making them , try a google .
Hope I have not offended any Delos owners here , but the fact is , is that all 3 of us came to this conclusion inderpendantly and until Peter mentioned it on Saturday night none of us wanted to admit it ( human nature ? ) .
Brian.