Latest Deals!

TPO 0.75x Focal Reducer for Ritchey-Chretien Telescopes

ITEM #
OS-FRRC-75
  • Price:
  • Sale
  • Regular price $129.95

4
Free Shipping
Add to Wishlist
Already have gear? Trade it in for cash or new equipment.

Accessories Added

DESCRIPTION

TPO 0.75x Focal Reducer for Ritchey-Chretien Telescopes

Fully multi-coated optics, the Third Planet Optics 2" focal reducer will reduce your focal length by 0.75x shortening exposure times while still retaining a crisp image with excellent color and contrast. Extra long focal length to be perfectly compatible with the TPO RC telescopes, off-axis guiders, and filter wheels and is best for CCD sensors with up to a 15mm diagonal. Two element design effectively reduces focal ratios of the Third Planet Optics Ritchie Chretien from f/9 to f/6.75 and from f/8 to f/6.

  • Reduction: Nominal 0.75x
  • Size: 2 Inch
  • Two Element Design
  • Two Year Warranty Included!

SPECIFICATIONS

Back Focus80mm
Camera Side ConnectionMale M48x0.75
Free ShippingYes
ManufacturerTPO
Scope Side Connection2" Nosepiece (housing)
Scope Side ConnectionFemale M48x0.75
Warranty2 Year Warranty

Customer Reviews

3.5 Based on 4 reviews
5 ★
50% 
2
4 ★
0% 
0
3 ★
25% 
1
2 ★
0% 
0
1 ★
25% 
1
Write a Review Ask a Question
  • Reviews
  • Questions

Thank you for submitting a review!

Your input is very much appreciated. Share it with your friends so they can enjoy it too!

WM
10/02/2018
William M.
United States

Best site ever!

Customer service to quality of products...this is the best site!! Bill

MR
09/13/2018
Mike Renzi

My Review Revised

At length, I found this focal reducer not to fit snugly to the CCD camera (a QSI 690 and also an SBIG ST10XME). It fits to the CCD camera via a ring that is ******* into the camera, and then the FR is attached to that - the fit is poor and introduces flexure. I don't use it any more.

CC
05/29/2018
Chris C.
Canada

RC Focal reducer

Ok with Atik 4 camera. Unable to reach focus with Canon 60Da DSLR, focal plane too far in even with no extender rings.

MR
02/28/2018
Mike R.
United States

A well made, solid Focal Reducer

I am using the 2" .75x FR for my Astro-Tech 14" RC, using an SBIG ST10XME - it is a good match. I tried another FR from another vendor and it was poorly made, the t-threads were too deep and it would not fit snugly into the camera. This FR is very well made, fits great into the CCD camera.