What is the best 6-7mm ep with at least 50-degree fov under ~$60 ? There are quite a few options when I search but I can't tell which one's are good v/s great.
For example, Celestron Omni, E-lux, Orion Expanse, Meade 4000 , Vixen NPL, and ofcourse gso. House brands like Astrotech, Agena, Opt, High Point, etc...
It will be used on a Celestron 102 slt F6.5 refractor, mirror diag, and sometimes with a Celestron omni 2x barlow.
What do you recommend ?