Starlight Instruments Feather Touch FTF2015BCR-LW 2'' Focuser with 1.5" Focus Travel
The ultra-lightweight 2" high-end focuser offers a 38mm focus travel and is suitable for self-building and telescope upgrading.
♦ Less than 0.4kg due to material saving design and other processes
♦ 2" barrel with compression ring on eyepiece side
♦ Dovetail on the telescope side with a diameter of 69.6 mm; suitable telescope adapters are available
♦ Extension Tube Adjustment Range - 38.1mm
♦ Minimum overall height with internal extension position only 37mm - but the extension tube protrudes 37mm on the telescope side, a spacer is needed for Newtonian telescopes
♦ No tilt guaranteed when fixing pull-out position
♦ 10:1 micro reduction for precise focus
♦ Particularly accurate 2" clamp - important for astrophotography
Starlight Instruments FTF2015BCR-LW: The 2-Inch Ultralight Focuser
The proven 2015BCR has been further developed to achieve the best possible weight savings while maintaining maximum stability.
The focuser was freed from excess material through cutouts and more precise processing and therefore weighs approximately 385g. It stands as stable as the normal extension and can be loaded up to approx 4kg.
Starlight Instruments 2" Feather Touch Focuser
The extracts of this manufacturer are among the best. All running parts are made of hardened stainless steel to achieve the best possible smooth running even under maximum loads. The focusers have no signs of wear. Even years later, the fit is the same as the first day. Hardened stainless steel wheels and a hardened stainless steel running surface ensure smooth yet highly precise adjustment.
The adaptation of the focuser to the telescope
The focuser has a dovetail ring that fits various Starlight and TS-Optics adapters. This allows you to attach the focuser to the telescope.
♦ Rear sight telescopes (refractor, Cassegrain...) - The focuser housing is very short, only 37 mm. Therefore, the focuser can be used with telescopes with a narrow focal position.
♦ Side View Telescopes (Newton) - matching bases are linked. However, the use of an extension is recommended, otherwise the extension tube will protrude too far into the tube when the shortest extension position is set. When calculating the focus position, the height of the focuser (37mm) must be added to the height of the spacer.
We recommend the R20-1.0 for Newtonian telescopes. The spacer has a height of 25.4 mm. The effective height of the focuser is then 62.4 mm + the 6 mm height of the Newton base.
Especificaciones:
| Model: | 2" dual-speed focuser |
| Speed reduction: | 1/10 |
| Travel: | 38.1 mm (1.5") |
| Minimum height: | 37 mm (without telescope-side ring dovetail) |
| Outer diameter of the drawtube: | 64.5 mm |
| Length of the drawtube: | 75 mm |
| Diameter of the telescope-side ring dovetail: | 69.6 mm |
| Eyepiece clamping: | with brass compression ring |
| Racked in from mounting face: | 1.405" / 35.687 mm |
| Racked out from mounting face: | 3.005" / 76.327 mm |
| Weight: | 0.848 pounds (0.385 kg) |
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