WTH are the differences in eyepieces from the same makers?

[Elrond1998]

I've been new to astronomy three different times in my life. 

If you are as confused as I was about all the different eyepieces and why one company can offer so many versions at the same mm, this has helped me.

https://www.televue.com/engine/TV3b_page.asp?ID=2

 

[RT65CB-SWL]

Seeing is believing…

left: 13mm Plossl.  centre: 13mm Nagler/type 1.  right: 13mm Nagler/type 6.

BTW - welcome to SGL @Elrond1998 

Edited July 3, 2022 by Philip R

[Elrond1998]

Newish to this exciting hobby, I decided to go with three (4mm, 9mm 15mm) Telel Vue Delite eyepieces, and a 40mm plossl, to go with my 8 inch dobsonion. 

Edited July 5, 2022 by Elrond1998

[RT65CB-SWL]

1 hour ago, Elrond1998 said:

Newish to this exciting hobby, I decided to go with three (4mm, 9mm 15mm) Telel Vue Delite eyepieces, and a 40mm plossl, to go with my 8 inch dobsonion. 

Good choice you have purchased. Besides the ones I have shown above, I also have a 6mm & 8mm Radian. These were the Delite’s predecessor… plus a few other TeleVue eyepieces and other brands.