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Tele Vue Satin HiHat Adapter- 2" - 1.25"
The Tele Vue Satin HiHat Adapter (ASF-8125) lets you use 1.25" eyepieces in a 2" focuser or 2" diagonal. It is the reference adapter for parfocal Tele Vue eyepiece sets.
Parfocalizing 1.25" Eyepieces in a 2" Focuser
"Parfocal" means you can swap eyepieces with little to no change in focus, saving valuable time at the telescope. Nagler Type 7 eyepieces used in 2" mode are parfocal with most other 1.25" Tele Vue eyepieces when those eyepieces sit in this Hi-Hat adapter. The 5.5mm and 9mm Nagler Type 7, used in 1.25" mode in the Hi-Hat adapter, are parfocal with the other Nagler Type 7 eyepieces and most Tele Vue 1.25" eyepieces.
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What is the main purpose of the Tele Vue Satin HiHat Adapter?
The Satin HiHat Adapter (model ASF-8125) lets you use 1.25" eyepieces in a 2" focuser or 2" star diagonal. Tele Vue uses it as the reference for parfocal sets: with it, most Tele Vue 1.25" eyepieces are parfocal with Nagler Type 7 eyepieces used in 2" mode.
What does "parfocal" mean for my observing with the HiHat Adapter?
Parfocal means that different eyepieces reach focus at the same point. When using the HiHat adapter with compatible Tele Vue eyepieces, you can change magnification, for example from a Nagler Type 7 in 2" mode to most Tele Vue 1.25" eyepieces in the HiHat, with little or no adjustment to the focuser.
Will the ASF-8125 HiHat make all my 1.25" eyepieces parfocal in my 8" SCT?
It holds standard 1.25" eyepieces of any brand. The parfocal pairings are published only for Tele Vue eyepieces (most Tele Vue 1.25" eyepieces and the Nagler Type 7 line), so eyepieces from other makers may need refocusing.
How do I use the HiHat adapter to make my Nagler Type 7 eyepieces parfocal?
The 5.5mm and 9mm Nagler Type 7 have a removable 2" adapter. Used in 1.25" mode in the HiHat adapter, they are parfocal with the other Nagler Type 7 eyepieces and most Tele Vue 1.25" eyepieces.
How does the Satin HiHat (ASF-8125) differ from the Tele Vue Equalizer (BEC-0005)?
The Satin HiHat (ASF-8125) and the Equalizer (BEC-0005) are both HiHat 2" to 1.25" adapters in Tele Vue's eyepiece accessory range. The ASF-8125 is the reference adapter for parfocal Tele Vue eyepiece sets. See the Equalizer HiHat page for its details.
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| Brand |
Tele Vue |
| Model |
ASF-8125 |
| Type |
2" to 1.25" eyepiece adapter, Hi-Hat style |
| Finish |
Satin |
| Telescope Connection |
2" barrel |
| Eyepiece Connection |
Accepts 1.25" eyepieces |
| Warranty |
5 years |
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Satin HiHat Adapter 2" - 1.25"
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Tele Vue 5-Year Limited Warranty
