Feather Touch Focuser
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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
as follows:
- To the Series 80 draw tube
- Directly to Series 80 tubes (i.e. no
draw tube) via Borg adapter
7801
- To Series 115 and 140 tubes via
Borg large draw tube
8317
- Directly to Series 115 and 140 tubes via
Borg adapter
8116
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NOTE: If the Feather Touch focuser is purchased
as part of a Borg OTA set, the FTF-BORG adapter
is provided free. An example OTA set (101ED, Series
80 tube) with the Feather Touch focuser is:
2101
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7800
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7749
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FTF-BORG
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FTF-8C
The FTF-BORG adapter also allows attachment to
other types of telescopes are as follows:
- To SCT's via Borg adapter
7428
- To Takahashi scopes with 72mm threads
(FS-102, FS-128, FSQ-106, TOA-130, BRC-250
and FRC-300) via Borg adapter
7913
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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.
For more details on the motorized focusing option, see:
http://www.starlightinstruments.com/digital-FTS.html
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.
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