What is the main benefit of the 10:1 dual-speed on the Feather Touch focuser?
The 10:1 reduction ratio means that ten turns of the fine focus knob equal one turn of the coarse knob. This mechanical advantage allows for extremely precise, minute adjustments, which are critical for achieving sharp focus with high-magnification eyepieces or when imaging with a camera sensor where the focus zone is razor-thin.
How does the Feather Touch 2.0" focuser handle an imaging train for capturing the Andromeda Galaxy (M31) on a Newtonian?
With its 8-10 pound lifting capacity, the Feather Touch 2.0" Crayford easily supports a typical deep-sky imaging train, including a DSLR or dedicated astronomy camera, filter wheel, and off-axis guider. The zero-shift Crayford mechanism ensures that as you focus on stars in M31, the field does not move, and the adjustable brake holds the entire payload securely in place, even when the telescope is aimed high in the sky.
I have an 8" SCT. Which Feather Touch travel option should I choose?
For an SCT, the primary focusing is done by moving the mirror, and the Feather Touch is used for fine adjustments. The 0.8" "Shorty" or 1.5" travel models are typically sufficient. The shorter travel provides a more compact profile while still offering more than enough range for fine-tuning focus for both visual eyepieces and cameras without interfering with the telescope's rear cell.
What is the difference between this Crayford focuser and a Rack & Pinion model?
A Crayford focuser, like this one, uses a smooth steel shaft pressed against the drawtube for frictionless motion, ideal for smoothness and zero backlash. A Rack & Pinion focuser uses a gear-and-tooth mechanism, which provides a higher lifting capacity for extremely heavy equipment but may not feel as fluid as a Crayford. For loads within the 8-10 pound range, the Crayford offers superior feel and precision.
Can I motorize the Feather Touch 2.0" Crayford focuser for autofocusing?
Yes. The Feather Touch 2.0" focuser is compatible with Starlight Instruments' motor systems, such as the Handy Stepper Motor (HSM). This allows you to add fully automated, computer-controlled focusing to your imaging setup for use with software like N.I.N.A., Sequence Generator Pro, or TheSkyX.
Does the Feather Touch focuser come with an adapter for my telescope?
No, this focuser is sold as a standalone unit. You must purchase a telescope-specific adapter or base plate separately to match your instrument's optical tube. This modular approach ensures a perfect, rigid fit for hundreds of different telescope models.
