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Hey Greg.
I have an Esprit 120 (f/7), but have had around 10 scopes/OTAs over the years. Have owned a variety of budget eyepieces, plus a variety of Televue Naglers and Panoptics. Have only kept 3 EPs which serve me well, mainly for occasionally showcasing my favourites to friends & family.
Panoptic 27mm - 2” sweet spot, nice FOV, good to the edge, reasonable $
Nagler 13mm - 1.25”, nice for tight clusters, cheaper EPS ~15mm good too
WO UWAN 7mm - 1.25”, good for planets & double stars
Cheaper 1.25 EPs (eg. GSO made superviews, rebranded) can generally be okay too, down to about 5mm. They mainly struggle on newt reflectors of f/5 or below.
With your Esprit being f/5.5 I suggest that you:
- avoid cheap 2” EPs (poor stars towards the edge)
- avoid FL larger than ~27mm (exit pupil 4.9mm in your scope). Otherwise it can be difficult for folks to line up their pupil with the full image (especially for 1st time viewers)
Hope that helps.
Enjoy your viewing!
Jeff
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