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A Rock-Solid Connection for Your SBIG STL Camera
The Tele Vue SBIG STL Camera Adapter for 2.4" focusers is an essential component for astrophotographers seeking a direct, secure connection between their Tele Vue imaging refractor and an SBIG STL-series camera. This purpose-built adapter eliminates the flexure and potential misalignment common with generic, multi-part solutions. It creates a single, rigid imaging train for sharper stars and higher quality data.
Engineered for the Tele Vue Imaging System
This adapter is designed to integrate perfectly with the 2.4-inch focusers found on Tele Vue NP101is and NP127is telescopes. The large-diameter threaded connection ensures the adapter seats flush and square against the focuser drawtube. This rigidity is critical for maintaining optical alignment, preventing tilt that can elongate stars in the corners of your image, especially when using heavy cameras or filter wheels.
By threading directly onto the focuser, you bypass compression rings or thumbscrews entirely. This solid metal-on-metal contact means your camera and focuser behave as a single unit. The benefit is consistent, repeatable focus and framing, session after session, without the subtle shifts that can compromise long-exposure imaging.
A Direct Mount for SBIG STL Cameras
The camera-side of the adapter features the precise thread pattern required for the SBIG STL camera body and its compatible filter wheels, like the FW8-STL. This dedicated fit provides a secure attachment that will not loosen or sag as the telescope tracks across the sky. You can image with confidence, knowing your camera is held firmly on the optical axis.
This direct connection is a significant workflow improvement over universal adapters. You spend less time diagnosing equipment flexure and more time capturing photons. For imagers using these classic, high-performance CCD cameras, this adapter is the mechanically correct way to complete the optical train.
Precision Machining for Optical Purity
Tele Vue manufactures the STL-1071 from a single billet of high-grade aluminum, ensuring maximum strength and minimal weight. The interior of the adapter is treated with a matte-black anodized finish and features anti-reflection threads. This treatment absorbs stray light, preventing internal reflections that can reduce image contrast and introduce artifacts into your astrophotos.
While a simple component, the adapter's contribution to image quality is significant. It maintains the high-contrast performance of your Tele Vue refractor by ensuring that only light from your target reaches the sensor. This is one of those small, critical parts where precision manufacturing makes a visible difference in the final image.
Achieving Correct Back Focus
With an optical length of 1.05 inches (26.7mm), this adapter is a key component in your back focus calculation. When used with Tele Vue's reducers or flatteners, this fixed length helps you place the SBIG STL sensor at the precise focal plane. The trade-off for this adapter's rigidity is its fixed length; it is not adjustable and is designed specifically for the published back focus requirements of Tele Vue optical systems with STL cameras.
For imagers building a portable or remote setup, this adapter's reliability is its greatest strength. It is a component you install once and trust completely, removing a significant variable from your imaging equation. It is the right choice when you prioritize mechanical stability over flexible, but less rigid, universal solutions.
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Will this adapter work with my SBIG STX or Aluma camera?
No, this adapter is specifically threaded for the SBIG STL-series camera body and its compatible filter wheels. Other SBIG cameras use different thread patterns and will require a different adapter.
Is this the only part I need to connect my STL camera to an NP127is?
This adapter connects the camera to the 2.4" focuser drawtube. Depending on your imaging goals, you may also need a field flattener (like the LCL-1069) or reducer (NPR-2073), which would be installed between the focuser and this adapter.
Does this adapter cause any vignetting?
No, the adapter is designed with a large internal diameter matched to the 2.4" focuser and the large sensor of the STL cameras. It will not introduce any vignetting to the system.
Why use this threaded adapter instead of a 2" nosepiece?
A threaded connection provides a much more rigid and secure attachment than a 2" nosepiece held by thumbscrews. This prevents camera tilt and flexure, which is critical for achieving sharp stars across the entire field of view, especially with heavier cameras.
What is the optical length of the STL-1071 adapter?
The adapter adds 1.05 inches (26.7mm) of length to the optical path. This measurement is important for calculating the correct back focus distance when using a reducer or flattener.
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| Product Code |
STL-1071 |
| Telescope Side Connection |
Tele Vue 2.4" Female Thread |
| Camera Side Connection |
SBIG STL-Series Male Thread |
| Optical Length |
1.05" (26.7 mm) |
| Material |
Black Anodized Aluminum |
| Weight |
2.4 oz (68 g) |
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Tele Vue SBIG STL Camera Adapter for 2.4"
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Tele Vue 5-Year Limited Warranty
