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Focal Reducers and Field Flatteners

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Orion Field Flattener for EON 104mm ED-X2 Triplet Refractor
Designed specifically for use with the EON 104mm ED-X2, this device corrects field curvature to yield an optically flat field for optimized imaging performance. Includes standard T-thread (M42) and wider-format M48 camera attachment adapters.
$299.99

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Orion Field Flattener for Short Refractors
4.6 / 5.0
Designed for use with 400mm to 660mm focal length refractor telescopes with focal ratios of f/5 to f/7.5, this Field Flattener lets you enjoy the full potential of your fast refractor telescope for astrophotography. Fully multi-coated optics.
$149.99

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Orion 0.8x Focal Reducer for Refractor Telescopes
4.8 / 5.0
The Orion 0.8x Focal Reducer for Refractors increases any 2" focuser-equipped astrophotography refractor's field of view while reducing the effective focal length by a factor of 0.8x, thereby providing a shorter, more optically fast focal ratio.
$149.99

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Orion 0.5x Focal Reducer for StarShoot G3-G4 Imaging Cameras
4.5 / 5.0
The 1.25" Orion 0.5x focal reducer increases the area imaged by your StarShoot G3 or G4 camera. The larger imaging area allows capture of larger star fields that may not fit entirely in your telescope's normal field of view.
$44.99

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Orion 0.8x Reducer-Flattener, EON 115mm ED Triplet Refractor
The 0.8x Reducer-Flattener (for photography only) provides pinpoint stars to the edge of the image frame. It also reduces the EON 115's effective focal length from 805mm to 644mm, for a zippy f/5.6 focal ratio. A must-have accessory for imaging.
$249.99

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Orion 0.8x Reducer-Flattener, EON 130mm ED Triplet Refractor
The 0.8x Reducer-Flattener (for photography only) provides pinpoint stars to the edge of the image frame. It also reduces the EON 130's effective focal length from 910mm to 728mm, for a zippy f/5.6 focal ratio. A must-have accessory for imaging.
$249.99

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Orion 2" Photo-Visual Coma Corrector for Newtonians
Corrects coma and field curvature inherent in fast Newtonians from f/3.5 to f/6, rendering sharp stars across the entire field of view or image frame. Works for visual observing and astrophotography. Fully multi-coated optics with 75mm backfocus.
$129.99

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Orion 20mm 2"/M48 Extension Spacer Ring
Aluminum extension ring with M48x0.75 male thread on one end and M48x0.75 female thread on the other. Provides 20mm of extension length and can be combined with other 2"/M48 spacers to meet backfocus requirements of cameras, flatteners, etc.
$19.99

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Orion 2"/M48 Extension Spacer Ring Set
Set your camera at the proper backfocus distance with this set of 2"/M48 spacer rings. Includes 5mm, 10mm, 20mm and 30mm fixed lengths plus a variable 9mm-14mm ring. Each ring has internal and external M48x0.75 threads. Can be used in combination.
$49.99

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