Feather Touch Focuser
Starlight Instruments' Feather Touch
Crayford focusers are available as
an option for all Borg scopes from the
Series 80 up. These focusers feature
an internal braking system.
A scope adapter (part number FTF-BORG)
allows the focuser to attach to Borg OTA's
- To the Series 80 draw tube
- Directly to Series 80 tubes (i.e. no
draw tube) via Borg adapter
- To Series 115 and 140 tubes via
Borg large draw tube
The FTF-BORG adapter also allows attachment to
other types of telescopes are as follows:
- To SCT's via Borg adapter
- To Takahashi scopes with 72mm threads
(FS-102, FS-128, FSQ-106, TOA-130, BRC-250
and FRC-300) via Borg adapter
M57 Version of Feather Touch Focuser
For Borg and many other Japanese-made telescopes, a version of the Feather Touch Focuser with a metric M57 interface is available. Use of this coupling allows for the direct attachment of many available Borg accessories and has the additional benefits of providing a larger opening with a very rigid connection, compared to coupling with the alternative 2" nose-piece coupling.
Above, the M57 Feather Touch Focuser is shown in a photographic
configuration with Borg camera rotator ring
7352, 0.85x focal reducer 7887, and the available motorized focuser option. For visual use, Borg M57 extension/2" accessory holders such as part #7504
may be substituted for the rotator ring and focal reducer.
3.5" Focuser Adapter
This accessory interfaces to the Feather Touch 3.5" focuser on large scopes (such as those produced by TEC) and allows the use of Borg M57 accessories.