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Green Monday - Loads Of Telescope Deals!

Reducers & Correctors

4 Items

Sky-Watcher 0.85X Reducer/Corrector for Pro 100ED Telescope - S20201

SKU: SKY-S20201
  • Optimized for Sky-Watcher Pro 100ED apochromatic refractor telescopes, the SkyWatcher 0.85x Focal Reducer/Corrector enables faster optics for improved astrophotography performance.
  • Reduces the focal ratio of 100 mm Pro ED APO refractors from f/9 to f/7.56.
  • In addition to lowering the 100 mm Pro ED's effective focal length, this accessory also improves field-edge correction considerably.
  • Works best in conjunction with Sky-Watcher M48 T-ring adapters.
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$249.00

Sky-Watcher 0.85X Reducer/Corrector for Pro 120ED Telescope - S20202

SKU: SKY-S20202
  • This SkyWatcher 0.85x Focal Reducer/Corrector is designed for those who wish to bolster their Sky-Watcher Pro 120ED APO refractor's astro-imaging capabilities.
  • Reduces the focal ratio of 100 mm Pro ED APO refractors from f/7.5 to f/6.3
  • Provides effective focal length reduction by a factor of 0.85x while greatly improving field-edge correction.
  • Works best in conjunction with Sky-Watcher M48 T-ring adapters.
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$249.00

Sky-Watcher Quattro Coma Corrector - S20204

SKU: SKY-S20204
  • Sky-Watcher Coma Corrector with M48 threads designed specifically for f/4 Quattro Imaging Newtonians.
  • This optical correction device incorporates FPL51 and Schott glass and will give stars located at the far reaches of the view field an appearance enhancement.
  • Correcting for coma, an off-axis aberration commonplace with classic Newtonian reflector telescopes, greatly enhances wide-field astro-imaging performance.
  • Adding this Sky-Watcher Quattro Coma Corrector necessitates 55 mm of back focus.
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$285.00

Sky-Watcher 0.85X Reducer/Corrector for Pro 80ED Telescope - S20200

SKU: SKY-S20200
  • This SkyWatcher 0.85x Focal Reducer/Corrector is designed for those who wish to bolster their Sky-Watcher Pro 80ED APO refractor's astro-imaging capabilities.
  • Decreases your 80 mm ProED's focal ratio from f/7.5 to f/6.3.
  • Provides effective focal length reduction by a factor of 0.85x while greatly improving field-edge correction.
  • Contributes 55 mm of backfocus.
  • Optimally suited for use in conjunction with Sky-Watcher's M48 T-ring adapters.
Free shipping Free shipping
$249.00

A focal reducer is an excellent tool to help you achieve the magnification you need, and at High Point Scientific, we provide you with the best selection. A focal reducer, also known as a telecompressor, effectively reduces the focal length of your OTA, resulting in a wider field of view. They are also a great addition to any astrophotography set up as it can cut your exposure time down considerably. Enjoy wide views of large objects such as nebulae with a faster lens speed!


We also have a wide variety of correctors designed for flat-field correction or coma correction. A field corrector is vital for astro-imaging with certain telescope designs because it optimizes edge-of-field image quality. When observing with a Newtonian, coma correctors help reduce comatic aberration or coma. Without a coma corrector, Newtonians may show stars with comet-like tails. Add a coma corrector to your set up to make sure you view celestial objects with pinpoint definition. Also, be sure to check out our extension tubes and adapters to make sure you achieve the necessary back focus for your set up.


You will find focal reducers and correctors from all of the latest brands, including Celestron, Tele Vue, Baader, Takahashi, Sky-Watcher, and many more! Our experts have hand-selected each accessory to give you a quality selection of great products. We are ready to help you get the best views out of your telescope!

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