What is the purpose of the Starlight Instruments adapter for the Orion 0.85x Reducer?
This adapter is designed to create a secure, threaded connection between a Starlight Instruments 2.0" Feather Touch focuser and an Orion 0.85x Focal Reducer/Corrector. It replaces the standard 2.0" nosepiece and compression ring system, which can be a source of tilt and flexure in an imaging train.
Why is this Starlight Instruments adapter better than using a standard 2.0" nosepiece?
A standard nosepiece held by a compression ring or thumbscrews can sag or tilt, especially under the weight of a camera. This adapter threads directly onto the focuser, creating a single, solid unit with the reducer. This rigid connection is critical for maintaining optical alignment and achieving sharp stars, particularly with modern, high-resolution sensors.
Will this adapter work with any 2.0" focuser?
No, this adapter is specifically machined with the correct threads and tolerances for Starlight Instruments 2.0" Feather Touch focusers. While it may thread into other focusers, proper seating and optical alignment are only guaranteed with Starlight Instruments products.
I'm imaging with an Orion ED80T CF and the 0.85x reducer. Will this adapter improve my images?
Yes, it is highly likely to improve your results. Telescopes like the Orion ED80T produce excellent images, but any tilt in the optical train can lead to elongated stars in the corners of your frames. By creating a rigid, threaded connection, this adapter eliminates a major potential source of tilt, helping you get the most out of your telescope's optical system.
Does installing this adapter change the back focus of the Orion 0.85x reducer?
This adapter is engineered to replace the standard nosepiece and maintain the correct, specified back focus distance for the Orion 0.85x reducer. You can install it with confidence that your optical spacing will remain correct for proper field correction.
If I use this adapter on my Celestron EdgeHD 8" with a Feather Touch focuser, will it eliminate sensor tilt?
This adapter will eliminate any tilt occurring specifically at the connection between the focuser and the reducer. While sensor tilt can originate from other places (e.g., the camera's T-ring or the sensor itself), the focuser connection is a very common source. Installing this adapter is a critical step in creating a truly rigid imaging train for a system like an EdgeHD 8".
