Which focusers work with this Starlight Instruments 2.0" Stowaway adapter?
This adapter is designed to accept any Starlight Instruments 2.0" Feather Touch focuser, such as the FTF20 series Crayford or Rack and Pinion models. It provides the correct threading and mechanical interface for these focusers.
Is this adapter compatible with Astro-Physics Stowaway models from 2018 or later?
No. This adapter is specifically engineered for pre-2018 Astro-Physics Stowaway models. Astro-Physics may have changed the tube threading or focuser mounting design in later production runs, so you must verify your telescope's manufacture date before purchasing.
How does this 2.0" adapter improve imaging with a pre-2018 Astro-Physics Stowaway?
The primary benefit is that it allows you to install a Feather Touch focuser. This provides two key advantages for imaging:
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Precision Focus: The 10:1 fine focus knob allows for extremely small, repeatable adjustments necessary to achieve critical focus with high-resolution cameras.
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Load Capacity: A Feather Touch focuser, securely mounted with this adapter, can handle heavy imaging trains (camera, filter wheel, off-axis guider) without sagging or shifting, which is essential for long exposures.
Does installing this Starlight Instruments adapter require permanent modifications to my Stowaway?
No. The adapter is designed to thread directly onto the rear of the optical tube assembly after you remove the stock focuser and its mounting flange. The installation is completely reversible, allowing you to return the telescope to its original configuration if needed.
What is the main reason to upgrade the focuser on a pre-2018 Astro-Physics Stowaway?
While the stock focuser on an Astro-Physics telescope is of high quality, upgrading to a Starlight Instruments Feather Touch provides superior fine-focus control and opens the door to electronic and automated focusing. For demanding imagers seeking to eliminate any potential mechanical variable and achieve perfect, repeatable focus via software, the Feather Touch system is the industry standard.
Can I use a 2.5" or 3.0" Feather Touch focuser with this adapter for my Stowaway?
No, this adapter is specifically sized and threaded for Starlight Instruments' 2.0" focuser bodies. It will not fit the larger 2.5", 3.0", or 3.5" models.
