or
07990646466
-
We are here to help
-
sales@widescreen-centre.co.uk
-
Monday to Saturday - 10:00am-4:00pm

Starizona SCT Corrector IV - 0.63X Reducer / Coma Corrector

£529.00
(Inc. 20% VAT)
Loyalty Points: 529
Low stock, Shipped in 1-2 working days
+
Product Code
SCTCORR-4
Brand
Starizona
Email us a question about this Product
Description
Performance
 
The diagram above shows how the SCT Corrector improves the off-axis spot size on a Celestron 11" SCT. Performance is similar on other size telescopes.
 
Focal Length
 
The exact focal length of the reducer/telescope combo depends slightly on where in the optical path the SCT Corrector lens is placed. Nominally it will be within a few mm of the rear threads on the telescope. Changing this distance should only affect the focal length, not the optical quality. Listed below are the nominal focal lengths for the various sizes of Celestron SCTs*. The SCT Corrector works great on standard f/10 Meade SCTs as well, we just didn't have exact data for the nominal designs of those telescopes.
 
Telescope Focal Length Focal Ratio
C6 1220mm f/8
C8 1450mm f/7.1
C9.25 1525mm f/6.5
C11 1760mm f/6.3
C14 2365mm f/6.7

* The SCT Corrector has a reduction factor of 0.63x, but the C6 and C8 are actually closer to f/11 natively, and they have a shorter backfocus compared to the larger scopes so the reduction is a bit less.  The C14 is f/11 natively.
 
Camera Adapters
 
The SCT Corrector IV has a nominal image circle of 27mm, accommodating most popular CCDs and DSLRs. For larger format cameras, check out our SCT Corrector LF.
 
Because the backfocus of the SCT Corrector IV is fairly critical, for best performance Starizona makes a variety of camera adapters, and custom adapters are also easy to make for less-common camera setups.
 
The nominal backfocus is 90.3mm from the base of the threads on the camera side of the SCT Corrector IV. For the largest compatible cameras, this should be kept within +/-2mm, while smaller format cameras may work fine at slightly larger tolerances. If we do not have the correct length or style adapter you need, we can gladly make the correct part to get the best performance from your setup. Please contact with any questions on making your camera configuration work.
 
Telescope Adapters
 
The SCT Corrector IV, like the original SCT Corrector, has a 2" barrel that allows it to fit into a 2" visual back or 2" focuser. If your telescope does not have such an adapter, we recommend our Virtual View rotating visual back, which allows for easily changing the camera orientation without loosening any lock screws.
 
Filters
 
The front (telescope side) of the SCT Corrector IV is threaded to accept standard 2" (48mm) filters.
 
Features
 
  • 0.63x focal reduction factor
  • 2.5x faster than SCT's native f/10
  • 1.4x faster than original f/7.5 SCT Corrector design
  • 27mm image circle
  • 2" barrel diameter
  • 2.5" length excluding threads
  • Threaded for 48mm filters
  • SCT Corrector Top Thread: M42 x 0.75mm T-thread
  • Mechanical Backfocus (thread shelf to focal plane): 90.3mm (3.56”)
  • Black anodized, machined aluminum housing
  • Fully multi-coated optics
  • 5-element optical design with extra-low dispersion (ED) glass
Specifications

Specifications: Starizona SCT Corrector IV - 0.63X Reducer / Coma Corrector

What's in the Box

What's in the Box: Starizona SCT Corrector IV - 0.63X Reducer / Coma Corrector

Downloads
Reviews (0)

Be the first to Write a Review for this item!

Delivery

At The Widescreen Centre, we prioritize prompt order processing and dispatch. We strive to dispatch all orders on the same day or the next working day, depending on the time of your order. We hold extensive stocks to ensure that your items are ready for immediate despatch. Please note that the cut-off time for same-day dispatch is usually 1:30 p.m.

For delivery within Mainland UK, we use reputable couriers to provide efficient service. You can expect your package to arrive in 1-2 working days. Please note that a signature may be required upon delivery to ensure a secure receipt.

In the case of special order items, the delivery time may be longer. If you have any concerns or questions about the delivery of your item, please don't hesitate to Contact Us. We are here to assist you.

Should there be any delay in dispatching your order, we will notify you to keep you informed.

Please be aware that The Widescreen Centre cannot be held responsible for any postal or third-party delays that may occur. We are committed to providing a reliable and efficient delivery service for our valued customers.

For more information please click here


FAQ - Have a question about this product? Fill in the form below and we will get back to you as soon as we can!

*
*
*