TELECAT KITS

2" CATSEYE^TM Sight Tubes

Now there are 2 models to choose from
in 2" Telescoping Sight Tubes!
The original "XL" (f/3.5 - f/6.0) &
the shorter "XLS" (f/3.0 - f/5.0)

Click for a Closeup
Choose the model that's best suited to match your scope's f-ratio!
Larger-aperture, low f-ratio Newtonian telescopes with larger diagonal mirrors are becoming the norm, and the need for a precision 2" Sight Tube for properly positioning the Secondary beneath the focuser is a given. The CATSEYE line of "telescoping" sight tubes feature tuneable "length" capability to obtain the optimum tube-opening/Secondary "gap" resolution for insuring symmetrical intercept of the Primary light cone for maximum FOV illumination and contrast while maintaining axial registration via flush shoulder contact with the focuser drawtube lip.
For Newtonian's with f-ratio's under f/4.7, the shorter "XLS" model (f/3.0 to f/5.0) is recommended for "seeing" that generous "oversized" Secondary (typical of imaging astrographs).

Click for a Closeup

Click for a Closeup

The TELECAT^TM "Combo" Tools have:

All features of the TELETUBE XL^TMand XLS^TMabove.
Addition of the BLACKCAT XL-A^TM reflective ring enabling the TELECAT XL^TM and XLS^TM to function both as a sight tube and as a Cheshire as well.

TELECAT XL^TM Vic Menard Endorsement
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TELETUBE XL^TM & TELECAT XL^TM TELETUBE XLS^TM & TELECAT XLS^TM

Click for a Closeup
Click for a Closeup
2" XL^TM & XLS^TM Sight Tubes incorporate:

Large 1.759" Aperture.
Telescoping length adjustable from:
XL: f/3.5 to f/6.0
XLS: f/3.0 to f/5.0
Slide Position Locking Set Screws w/hex wrench.
Calibrated f/no. Ruler accessory marked in f/.1 increments.
Precision machined from T6061-T6 Aluminum & Black Delrin.
90-degree Intersecting .029" dia. Stainless Steel cross-hairs.

2.00" TELECAT^TM Kits Include:

2" TELECAT^TM Tool and Application Procedure.
2 large Primary mirror red or white reflective triangle center spots.
15" or 32" Max. Mirror Center-Spotting Template.
1 - Primary Center-spotting Procedure.
1 - Comprehensive Collimation procedure.

New Prices Effective: 11/7/2023

Click for a Closeup
With 15" Max. Template
(for Primarys 4" - 15" in diameter):
TELECAT XL^TM
(f/3.5 - f/6.0)

Choose Spots:

Price: $135

TELECAT XLS^TM
(f/3.0 - f/5.0)

Choose Spots:

Price: $130

With 32" Max. Template
(for Primarys > 15" diameter):
TELECAT XL^TM
(f/3.5 - f/6.0)
Choose Spots:

Price: $145

TELECAT XLS^TM
(f/3.0 - f/5.0)
Choose Spots:

Price: $140

Now there are 2 models to choose from in 2" Telescoping Sight Tubes! The original "XL" (f/3.5 - f/6.0) & the shorter "XLS" (f/3.0 - f/5.0)	Click for a Closeup
Choose the model that's best suited to match your scope's f-ratio!
Larger-aperture, low f-ratio Newtonian telescopes with larger diagonal mirrors are becoming the norm, and the need for a precision 2" Sight Tube for properly positioning the Secondary beneath the focuser is a given. The CATSEYE line of "telescoping" sight tubes feature tuneable "length" capability to obtain the optimum tube-opening/Secondary "gap" resolution for insuring symmetrical intercept of the Primary light cone for maximum FOV illumination and contrast while maintaining axial registration via flush shoulder contact with the focuser drawtube lip. For Newtonian's with f-ratio's under f/4.7, the shorter "XLS" model (f/3.0 to f/5.0) is recommended for "seeing" that generous "oversized" Secondary (typical of imaging astrographs).	Click for a Closeup Click for a Closeup

*The TELECAT^TM* "Combo" Tools have:**
All features of the TELETUBE XL^TMand XLS^TMabove. Addition of the BLACKCAT XL-A^TM reflective ring enabling the TELECAT XL^TM and XLS^TM to function both as a sight tube and as a Cheshire as well. TELECAT XL^TM Vic Menard Endorsement	Click for a Closeup

**TELETUBE XL^TM & TELECAT XL^TM**	**TELETUBE XLS^TM & TELECAT XLS^TM**
Click for a Closeup	Click for a Closeup
*2" XL^TM* & XLS^TM Sight Tubes incorporate:** Large 1.759" Aperture. Telescoping length adjustable from: XL: f/3.5 to f/6.0 XLS: f/3.0 to f/5.0 Slide Position Locking Set Screws w/hex wrench. Calibrated f/no. Ruler accessory marked in f/.1 increments. Precision machined from T6061-T6 Aluminum & Black Delrin. 90-degree Intersecting .029" dia. Stainless Steel cross-hairs.

*2.00" TELECAT^TM* Kits Include:**
2" TELECAT^TM Tool and Application Procedure. 2 large Primary mirror red or white reflective triangle center spots. 15" or 32" Max. Mirror Center-Spotting Template. 1 - Primary Center-spotting Procedure. 1 - Comprehensive Collimation procedure.
New Prices Effective: 11/7/2023
Click for a Closeup	With 15" Max. Template (for Primarys 4" - 15" in diameter):
	TELECAT XL^TM (f/3.5 - f/6.0) Choose Spots: Price: $135	TELECAT XLS^TM (f/3.0 - f/5.0) Choose Spots: Price: $130
	With 32" Max. Template (for Primarys > 15" diameter):
	TELECAT XL^TM (f/3.5 - f/6.0) Choose Spots: Price: $145	TELECAT XLS^TM (f/3.0 - f/5.0) Choose Spots: Price: $140