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Tele Vue 19mm Panoptic with 68 deg. apparent field, 13mm eye relief.
Tele Vue 17.3mm Delos with 72 deg. apparent field, 20mm eye relief.
Tele Vue 16mm Type 5 Nagler with 82 deg. apparent field, 10mm eye relief.
Also Tele Vue 18.2mm DeLite but only 62 deg. apparent field, 20mm eye relief. Discontinued now is the Tele Vue 18mm Radian with 60 deg. apparent field and 20mm eye relief. It is a very nice eyepiece and the 20mm eye relief makes it comfortable even without glasses.
I use 19 Pan, 16 Nagler & 18 Radian in refractors, Newtonians, SCTs & finders and they work well in either type and at different focal length instruments. (Tele Vue make refractors too so you would expect them to work there).
I have not used the Delos or DeLite or other brands in this focal length so cannot comment on them.
Do you prefer longer eye relief or are you Ok with say 10 to 13mm? The 19 Panoptic is one sweet eyepiece as the whole field can be taken in at once and yet still appears wide. The 16 T5 Nagler is also very nice but you have to look around a bit to take in the whole field. Both are very well corrected.
Whatever you choose, enjoy!
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