List Price :
$211.95Price : $102.30
Code : B00009XVHZ
* Special discount only for limited time
Product Feature
- Celestron Reducer / Corrector f/6.3.
Product Description
Reducer shortens the effective focal length of Schmidt-Cassegrain telescope optical system by 37% Converts f/10 optical system to faster f/6.3 for a significantly wider field of view Shortens exposure times for astrophotography by 2.5 times Four-element, fully multi-coated optical design with 41mm clear aperture threads into rear cell and works with any brand and size of Schmidt-Cassegrain telescope
Product Detail
- Brand: Celestron
- Model: 94175
- Dimensions: 2.00" h x2.00" w x2.00" l,1.00 pounds
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17 of 17 people found the following review helpful.
Visual or Video -A Great Accessory
By Curmudgeon In Training
I am sorry that I did not buy this accessory two years ago. It all began with a used Celestron C5. Then I bought a very nice used Nexstar 8SE and thought wow, I should have done this go-to thing sooner. After a year or so, I moved up to a new Celestron CPC925 and decided to explore video astronomy with an inexpensive Samsung SBC-2000 security cam. Most SCTs have a focal ratio of about f/10 (focal length divided by aperture) but a camera works better with a faster (shorter focal length) scope. The usual way to do that with a video camera is to screw on a small .5x reducer. So I bought on of those for $35 and was just amazed at the detail and colors in the Dumbbell Nebula. Then someone over at Cloudynights.com suggested that try adding a f/6.3 reducer (stacking reducers). So I bought the f/6.3, screwed in on the back of the CPC925, replaced the visual back and diagonal, mounted the camera (without the .5x) and stayed up until 2AM looking at the Orion Nebula. Before heading for bed, I pulled the camera, put in a 20MM 68 degree APOV eyepiece, and had another "Wow!" moment.
The Celestron f/6.3 reducer-corrector really brightens the image, widens the field of view, improves contrast and detail, and flattens the image improving the look of stars near the edge of the field of view. Many people leave them on all of the time except when looking at the moon and planets or other high magnification situation.
There are other and cheaper reducers on the market and they do work. However not all of them offer the same degree of improvement at the edge of the field of view. Rod Mollise writes "...6.3 r/cs are one of the best--if not the best--SCT accessories to ever come down the pike" and "I'll put it this way...the 6.3 rarely comes off the rear cell of the C8."
8 of 8 people found the following review helpful.
Celestron f/6.3 Reducer Corrector.
By Chuck
I've had this lens for about a month now. I've been using it for astrophotography mainly, and it's been working great. Really clear shots, with only a little vignetting around the edges. It's pretty solid, and easy to take in and out. I would definitely recommend it.
9 of 10 people found the following review helpful.
Works well with a few issues
By John R. King
I have enjoyed this lens especially for astrophotography. The main issue I had was I could not focus with this lens installed unless it was put in the right order. I found I had to place it as close to the camera as possible which meant I had to rearrange how my camera and assembly was arranged.
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