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Starlight Instruments 2.0" Adapter 3.5" Outer Diameter No Thread for Takahashi 4.0" Focuser
The Starlight Instruments A20-268 2.0" Adapter is a tube adapter for Starlight's 2.0" Feather Touch focusers, listed to fit the Takahashi 4.0" focuser scope. It has a 3.5" outer diameter with no thread and a length of 0.2".
What the A20-268 Is
Tube adapters fit a Feather Touch focuser to a specific telescope. In Starlight's part numbers, A20 adapters are for the 2.0" focusers. This one is listed as "3.5" Outer Diameter No Thread, 0.2" L (fits Takahashi 4.0" Focuser Scope)". Which Takahashi models use that focuser and how the adapter attaches are not published; contact us and we will confirm with Starlight Instruments before you order.
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What is the purpose of the Starlight Instruments A20-268 adapter?
The A20-268 is a specialized tube adapter designed to allow the installation of a Starlight Instruments 2.0" Feather Touch focuser onto a Takahashi telescope that has a 4.0" focuser mount. It bridges the mechanical difference between the telescope and the focuser.
Which focuser does the A20-268 adapter allow me to install?
This adapter is designed specifically for the Starlight Instruments family of 2.0" Feather Touch focusers. The "A20" prefix in the model number A20-268 designates it for use with these 2.0" models.
Which telescopes is the A20-268 adapter designed for?
Starlight lists it for the Takahashi 4.0" focuser scope. Verify your telescope's focuser mount specifications before purchasing.
How much back focus does the Starlight Instruments A20-268 use?
The adapter is 0.2 inches long. How that adds to your focuser's light path depends on how it seats on the telescope, which is not published.
How does the A20-268 attach if it has no threads on the 3.5" diameter side?
The attachment method for this part is not published. Contact us before ordering and we will confirm it with Starlight Instruments.
Can I use the A20-268 adapter to mount a 2.0" Feather Touch focuser on my Celestron SCT?
No, this adapter will not work with a Celestron SCT. The A20-268 is listed for the Takahashi 4.0" focuser scope. Starlight Instruments makes other adapters for Celestron SCTs.
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| Model |
A20-268 |
| Brand |
Starlight Instruments |
| Type |
Tube adapter for the 2.0" Feather Touch focuser |
| Fits |
Takahashi 4.0" focuser scope |
| Telescope Side |
3.5" outer diameter, no thread |
| Length |
0.2" |
| Warranty |
2 years |
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Starlight Instruments A20-268 tube adapter
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Starlight Instruments 2-Year Warranty
