Starlight Feather Touch FTF3515B-A 3.5" R&P focuser - 35mm adjustment range
The FTF3515 is a high-end rack and pinion focuser, especially for Newtonian telescopes for applications such as astrophotography.
♦ Extension tube adjustment range 35mm
♦ 100% correct field level position - extension tube does not yield
♦ 89mm free illumination, so full frame chips are also illuminated
♦ Screw adaptations through external thread possible
♦ Extension tube adjustment by rack and pinion. The draw tube itself is smooth in a combination of Teflon and stainless steel.
♦ Shown with optional swivel port adapter and optional 3.5", 3", and 2" adapters
♦ 3.5", 3" and 2" adapters are not included in the scope of delivery, but can be ordered separately,
Starlight Instruments 3.5" Feather Touch Focuser with Micro Reduction - 35mm Adjustment Range
Starlight's largest focuser and without a doubt one of the best focusers in the world for DIY telescopes and for upgrading telescopes. We recommend the focuser especially for Newtonian telescopes.
The advantages of Starlight Feather-Touch focusers:
♦ 100% correct position of the image plane - no tilt
♦ Good illumination even for large sensors
♦ Micro reduction for more precise focus
♦ Free adaptation to different types of telescopes (connection adapter see recommended accessories)
♦ Brake for free resistance adjustment - eliminates the need for clamping
♦ Regulation of the extension tube by rack and pinion decoupled from the bearing
♦ Brass toothed racks and hardened stainless steel toothed wheels ensure a responsive fit even under maximum loads
♦ Long life: the Feather Touch focuser is for life
♦ Wide range of accessories and connection adapters, as well as the possibility of motorization
Note: Telescope connection adapters and adapters on the eyepiece side are not included in the scope of delivery.
Telescope connection adapters are listed under "Mounting Accessories".
Eyepiece and camera-side adapters are listed under "Adapters."
Especificaciones:
| Clear aperture: | 98 mm (3.5") |
| Stray light treatment: | internal baffle system for avoiding stray light |
| Rotation: | 360° rotation with included connection adapter |
| Connection telescope side: | connection thread |
| Connection eyepiece side: | 4 3/32"-24 TPI male thread |
| Lifting Capacity: | up to 9 kg |
| Racked In from Mounting Face: | 132 mm |
| Racked Out from Mounting Face: | 247 mm |
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