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Swamp Fox
member
Reged: 12/26/06
Posts: 67
Loc: Goose Creek, South Carolina
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I have several wide-field eyepieces with 1.25" barrels that will not seat completely because the eyepiece "black body" strikes the edge of the OTA right in front of the EP holder. I thought I could find the solution by searching for a short extension tube, but had no luck. Can anyone that has encountered and solved this problem give me some advice? Maybe something other than extension tubed to search for? TIA!!
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Meade ETX 125PE
Tele Vue Pronto
Celestron 8x56 and 12x80 Binos
Meade 4000 9.7mm, 15mm, 26mm SP; 24.5mm SWA; 8.8mm, 14mm UWA; #140 2x Barlow
Tele Vue 26mm Pl; 4.8mm, 12mm, 17mm Nagler; 35mm Panoptic
Edited by Swamp Fox (10/07/08 07:47 PM)
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rmollise
Carpal Tunnel
Reged: 07/06/07
Posts: 1662
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Quote:
I have several wide-field eyepieces with 1.25" barrels that will not seat completely because the eyepiece "black body" strikes the edge of the OTA right in front of the EP holder. I thought I could find the solution by searching for a short extension tube, but had no luck. Can anyone that has encountered and solved this problem give me some advice? Maybe something other than extension tubed to search for? TIA!!
If this is a problem, find an old Barlow, unscrew the optical element from the end, and use the remainder as your extension tube.
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Uncle Rod
Watch for Rod's New Book:
Choosing and Using a New CAT--coming in December!
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DNTash
professor emeritus
Reged: 09/02/07
Posts: 636
Loc: New Delhi, India
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If I understand your problem correctly, you could cut the ring off an eyepiece cap and slip it over the tube up to the black body. The EP will then sit up a little higher.
Hope this helps.
Dale
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WO 66 Doublet
Meade ETX-90PE
WO "Crayford-ed" Orion 120ST
SkyMaster 15x70's, Meade Safari Pro 8x42's, Nikon Monarch 10x42's
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Swamp Fox
member
Reged: 12/26/06
Posts: 67
Loc: Goose Creek, South Carolina
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Thanks for the suggestions guys....I think I will try the barlow idea first....
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Meade ETX 125PE
Tele Vue Pronto
Celestron 8x56 and 12x80 Binos
Meade 4000 9.7mm, 15mm, 26mm SP; 24.5mm SWA; 8.8mm, 14mm UWA; #140 2x Barlow
Tele Vue 26mm Pl; 4.8mm, 12mm, 17mm Nagler; 35mm Panoptic
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Kolenka
professor emeritus
Reged: 06/01/08
Posts: 600
Loc: Seattle Area, WA, USA
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If you don't want to buy a barlow to butcher it, you can get a Lumicon barrel extender, as well.
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Meade 10" LX200R
Orion 80ED
Nagler 7T6, 9T6, 13T6, 17T4, 26T5
Canon XSi (Modded), TIS DMK 31AF03
Northwest Astro Photoblog
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Swamp Fox
member
Reged: 12/26/06
Posts: 67
Loc: Goose Creek, South Carolina
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You are right Kolenka...I rephrased a google search about a week ago and it gave me Lumicon. I order the extender + a 1.25" to 2" eyepiece adapter. It is due to arrive today or tomorrow, with the rain. But at least I should be set to go now....
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Meade ETX 125PE
Tele Vue Pronto
Celestron 8x56 and 12x80 Binos
Meade 4000 9.7mm, 15mm, 26mm SP; 24.5mm SWA; 8.8mm, 14mm UWA; #140 2x Barlow
Tele Vue 26mm Pl; 4.8mm, 12mm, 17mm Nagler; 35mm Panoptic
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Mak2007
sage
Reged: 06/24/07
Posts: 248
Loc: MD
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You did well ordering the lumicon. I am using now a 24mm Hyperion in my ETX-125PE using the Lumicon short extender. It works fine.
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10x50 Nikon Action Ex
ETX-125PE
"Don't worry about what telescope you own, or its quality. Just get out under the night sky, and enjoy God's wondrous universe." Thomas M. Back
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