TCF-S Information
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TCF-S3 3-inch I.D. Temperature Compensated Focuser
Optec, Inc.
TCF-S with TCF-S3 - Click on image for larger view.
The TCF-S has a new big brother - the TCF-S3. This 5 pound focuser has all the
same features of the TCF-S but is just bigger and stronger. With the every increasing
size of CCD cameras and associated instruments, the need for a precision digital
focuser that can take the weight and is compatible with most of the camera control
software available is now met.
No corners were cut with this model. The
massive drawtube has a 3.00-inch I.D. and is made from 7075, the strongest of
the commercial aluminum alloys. To prevent any slippage common to Crayford style
focusers, the drive rod is pressed onto the drawtube with a force of about 500
pounds. The TCF-S3 can take this extreme pressure because the drive rod is made
from a ground bar of high speed steel with a diameter of 0.375 inch. Hardened
rails of stainless steel are embeded in the drawtube to engage the drive rod
and take the strain.
The total linear travel of the drawtube is 1.00-inch
with a resolution of 0.0001-inch. Like the TCF-S, a control box with IN and
OUT pushbuttons, serial computer interface and digital display control all functions
of the TCF-S3. All other features of the TCF-S3 are similar to the TCF-S. It
uses the same cables, temperature probe and the new remote keypad. It is also
compatible with the current Optec control software TCF-S.exe.
Other telescope
mounts can be made custom in our shop. This focuser is only intended for large
scope with massive mounts. See price list for a list of available mounts. A
3-inch to 2-inch adapter is available to fit Optec and other standard 2-inch
accessories.
TCF-S3 with standard accessories that include controller, temperature probe
and power supply (not shown). Click on image for larger view.
TCF-S3 with gear cover removed. All gears are made from 303 stainless. Click
on image for larger view.
Click
here to link to telescope and camera adapters
for the TCF-S3
For owners of the Paramount ME, Optec offers a special
kit that can conveniently wire the TCF-S3 through the mount. In addition, both
the IFW and Pyxis can also be mounted and wired through the mount for easier
use and less cables. Click
here
to download more information.
