Optec TCF-Leo Low-Profile Focuser

Starting Price: $1,495.00
Price as Configured: $1,495.00
Brand: Optec / SKU: OP-19740

Optec has developed a low profile, yet extremely robust, 3-inch focuser for telescope installations where back-focus is at a premium.  With the width of a typical 1-1/4" eyepiece, the TCF-Leo provides a unique focusing solution for the Celestron EdgeHD and other telescopes with limited flange-to-focus distances.  The proven FocusLynx control system operates the TCF-Leo and can be extended to provide control for a second focuser and supports the optional 802.11 WiFi and Hand Control accessories.

The TCF-Leo supports several draw tube options including the Optec 3000 dovetail, a DSI 3.5" receiver, and a 3-inch split clamp for Wynne Correctors. You can select the option that works best for your system.

Add Hand Controller with FocusLynx Hub? (Required)
Drawtube (Required)
Special Takahashi Epsilon Kits (Optional)
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Replacement saddle plate with Tip-Tilt adjustment for Takahashi Epsillon 130 Astrograph. Replaces native focuser with custom designed OPTEC-3600 dovetail mount for TCF-Leo. Order with TCF-Leo and Optec # 17833 for complete motorized focuser package.
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OP-19816 - Optec-3600 to Takahashi Epsilon 160
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Replacement saddle plate with Tip-Tilt adjustment for Takahashi Epsillon 160 Astrograph. Replaces native focuser with custom designed OPTEC-3600 dovetail mount for TCF-Leo. Order with TCF-Leo and stock #17833 for complete motorized focuser package.

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OP-17870 - Optec-3600 to Optec-4300 Expansion Ring
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The 3600 to 4300 Expansion Ring allows owners of any OPTEC-3600 telescope adapter to easily expand the male dovetail out to 4.3-inches matching the OPTEC-4300 spec.

Inside Diameter: 3.6" (91mm)
Outside Diameter: 4.95" (126mm)
Overall Height: 0.42" (10.7mm)
Clear Aperture: 3.6" (91mm)
Weight: 3.4 oz (100 g)
Back-Focus Usage: 0.1" (2.5mm)

Camera-Side:
  • Any OPTEC-3600 telescope adapter.
  • Gemini Focusing Rotator.
  • TCF-Lynx 3 3-inch Focuser.
QTY:  
Price as Configured: $1,495.00

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The unique shape of the TCF-Leo is designed to fit neatly between the lock and focus knobs of the Celestron EdgeHD C-11 telescope OTA. With a center-to-edge distance of about 2.2-inches (55mm), the TCF-Leo works exceptionally well with Innovation Foresight's On-Axis Guider, providing clearance for large cameras and filter wheels above either of the flat edges of the TCF-Leo. Additionally, the TCF-Leo's 3600 receiver fits directly on to the large 3-inch port of the Perseus Instrument Selector for ultra-fine focus of a large format camera.

The TCF-Leo supports several draw tube options including the Optec 3000 dovetail, a DSI 3.5" receiver, and a 3-inch split clamp for Wynne Correctors. You can select the option that works best for your system.

This is a very low profile 3-inch focuser – only 1-1/4” thick with 0.35” (8.9mm) of drawtube travel. Includes FocusLynx control hub, power supply, cables, and 20-inch temperature probe. Specify OPTEC-3600 telescope-side mount and OPTEC-3000 3-inch drawtube camera-side mount separately. [OPTEC-3600 female receiver // OPTEC-3000 3-inch I.D. female receiver]