Cloud Break Optics

TCF-LSI Integrated Temperature Compensating Focuser (19702)

TCF-LSI Integrated Temperature Compensating Focuser (19702) - Main image
$500.85 $795 In stock

Category: Astrophotography Accessories

Description

#17670 - Original TCF-S Focuser with USB/Serial control

Following the long tradition of the TCF-S Temperature Compensating Focuser, Optec's TCF-LSI features a robust 2-inch Crayford-style design for smooth focus.  The updated model is faster and offers greater versatility in the same compact, yet solid, focuser design.

The TCF-LSI has all of the control electronics integrated into the focuser body. This means that you do not need any external controller. Simply connect power and the control cable and you are ready to begin. The TCF-LSI uses the same drivers as the rest of our FocusLynx family of focusers.

As a robust Crayford style 2-inch focuser, the TCF-LSI drawtube accepts any of our 2-inch adapters developed especially for the TCF-S and TCF-Lynx focusers.  The optional 1-1/4" Centering Adapter allows any 1-1/4-inch diagonal or eyepiece to be added behind the focuser.  Visual users will appreciate the In-Out Keypad for no-touch operation of the telescope focus.

Specifications

Overall Height: 3.3" (84mm) to 3.9" (99mm)
Focuser Travel: 0.6" (15.2mm)
Focuser Midpoint 3.6" (91.4mm)
Total Step Travel:   7,000 steps
Step Resolution:  2.2 microns
Weight:  2lb. 4oz. (1.0 kg)
Payload Capacity: 10-lbs. (4.5 kg)
Telescope-side Mount: OPTEC-2400 dovetail
Camera-Side Mount: 2-inch drawtube

Package Contents

  • TCF-LSI 2-inch Crayford-style Digital Focuser,
  • Optec USB/Serial communications cable, 6-ft. length
  • 12VDC 1.25A power supply - 110-240VAC input
  • UL/CSA compliant wall plug cord (included if With Hub selected),
  • 20-in Temperature Probe
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Customer Reviews (5.0 / 5 · 5 reviews)

Timothy S. ★★★★★

Finally, no more manual refocusing during long imaging runs—the temperature compensation is spot-on. The two-inch Crayford-style mechanism feels incredibly smooth and solid.

Scarlett ★★★★★

The USB control works flawlessly with my setup, and it's nice to see the temperature compensation actually hold focus across a whole session. Setup was straightforward out of the box.

James T. ★★★★★

Finally, no more adjusting focus every few minutes during my long imaging runs. The Crayford-style mechanism is smooth as butter, and the temperature compensation actually keeps my stars pin-sharp all night.