Built to support up to 17 lb of imaging gear, the Explore Scientific ES-FOC3 Self-Centering Focuser is compatible with FCD100 White Tube ED127 telescopes. Its self-centering compression design applies uniform pressure for a secure fit. A helical rack-and-pinion system lubricated with PTFE silicone provides an easy glide with maximum precision and minimal backlash.

The 5.7 lb focuser comes with 2 and 3" lock adapters for visual or camera accessories, and it has a back cell adapter with no-tool knobs for compatibility with select Explore Scientific refractors with apertures ranging from 120 to 140mm. The manual-tightening knobs make it easy to rotate the focuser.

Stable Base for Astrophotography    Uniform, Self-Centering Compression    17-Pound Lifting Capacity    9:1 Helical Rack-and-Pinion Focuser    Stainless Steel Ball Bearings and Shaft    3"-Diameter, Baffled-Interior Draw Tube    3.32" Travel    Black Anodized Aluminum Construction

Related Questions and Answers

Q: 1. The fibre lining on the cradles; how thick would you say it is?

A: Sorry this item is a special order item B&H does not stock this product. Please contact Explore Scientific for that type of specifications. Explore ScientificTel: (866)252.3811 Website http://explorescientificusa.com/

Q: 2. The description says the included 25mm eyepiece gives 40x power but spec's give the focal length as 500mm that would yield 20 power; what is correct?

A: You are correct it would be about a 20x. I have notified my web content team of the error.

Q: 3. Will this [safely] fit a 130mm (5.1") reflector tube?

A: This Cradle Assembly from Explore Scientific is a replacement for the cradle assembly included with the white 127mm telescope OTA but can also be used with other telescopes that would snugly fit its 5" inside diameter.

Q: 4. Can you use this with a cannon dslr camera and do you need a t mount

A: Yes but you will need a t mount. Might also want to get their field flattener.

Q: 5. Is there a custom hard case available for this scope?

A: There is no dedicated case for the Explore Scientific 102mm f/7 FCD100 Apo Triplet Refractor Telescope (OTA Only) BH #EX102F7ARTO • MFR #FCD100-10207-02 that B&H sells.

Q: 6. Is a field flattner recommended with this refractor?

A: a field flattener is not necessary for visual use, but one can be used to improve image quality when using large image sensors for photography

Q: 7. Would this fit a Celestron 8 inch reflector ?

A: This fits 6.9" Diameter Telescopes, so it will not work on an 8" Scope.

Q: 8. What is the manification?

A: The Explore Scientific FirstLight 150mm f/5 Reflector Telescope (OTA Only) BH #EXFLN150750 • MFR #FL-N150750 has a 750mm Focal Length, f/5 Focal Ratio Magnification will be determined on the millimeter of the eyepiece being used.

Q: 9. What is the max magnification this scope can use?

A: For maximum magnification I would not use an eyepiece lower than 5mm. I comes with a wide view of 25mm

Q: 10. What's the weight of the tube? Thanks

A: The weight of the tube is an estimated 18 pounds