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New to 2" eyepieces

Started by rtroxel, 09/30/2007 01:17PM
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Posted 09/30/2007 01:17PM Opening Post
Roy Troxel
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Join Date: Aug 2007

Location: Ranchos de Taos NM, US

Posts: 13

I've recently put the down payment on a new scope (12.5" Obsession) but I know nothing about 2-inch eyepieces. I was advised at a star party to begin with the "TeleVue 220", but I'm not sure what that is. Is it a 2-inch eyepiece with a 20mm focal length?

Thanks in advance...
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12.5" Obsession w/ ArgoNavis
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Posted 09/30/2007 02:34PM #1
Floyd Blue
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Join Date: Mar 2003

Location: Bakersfield CA, US

Posts: 4913

HI Roy,
There is a 2" 22mm t-4 and a 2" 20mm t-5 from Televue. Either is a fine EP, I own the 22mm along with the other t-4 EPs the 12mm and 17mm. Eye relief and weight is the biggest difference with the 22m being heavier and larger and having a longer eye relief.
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Posted 09/30/2007 03:00PM | Edited 09/30/2007 03:02PM #2
Fred Dase
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Join Date: Nov 2006

Location: Winchester VA, US

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I think they were refering to the Televue 20mm Type 2 Nagler. Its considered a "classic"
I don't know the weight offhand but its the heaviest eyepiece I have ever seen.
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