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$Orion 8893 Field Flattener for Short Refractors$

Orion 8893 Field Flattener for Short Refractors

Q: I have the orion eon 85mm ed-x2, is this the recomended flattener for it?

The Orion Field Flattener for short refractors is designed for Refractors between F5 to F7.5 and your EON 85mm is F6.6, so it should work fine, though I don't know if there is a field flattener that is "recommended" by Orion.

Q: Maybe i didn't ask this right. the 8893 fits my camera ok but not my telescope with 1.25" focuser threads. please, a link to an adapter that works? tu

If your scope is only 1.25" than yes you would need adapter.

Q: This is good for the orion astroview 120st?

This flattener is intended for refractors with short focal length, I don't remember but I think is up to 650mm focal length, I am using it with the Orion EDT80CF and works perfectly, I think as long as your telescope is within the focal length it should work, I will recommend you to look in orion web page and look for the specifications. I strongly recommend this flattener, also keep in mind that you will need the spacer rings, there is a set in orion web page as well, it is indispensable for CCD cameras , I think for DSLR are not required.Good luck and clear skies

4.8/5

Product ID: 99975109

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Details

Brand
Orion
Optical tube length
660
Eye piece lens description
Field
Objective lens diameter
55 Millimetres
Focus type
Manual Focus
Finderscope
Reflex

📐55mm backfocus for 2" focusers

🔭400-660mm focal length range

⚙️Interchangeable M42 & M48 adapters

Frequently Bought Together

Description

🔭 Elevate your astrophotography—capture the cosmos in flawless focus!

SHARPER STARS EVERY TIME - Eliminates field curvature for crisp, edge-to-edge star images
SEAMLESS CAMERA INTEGRATION - Includes versatile M42 and M48 thread-on adapters for effortless DSLR or mirrorless connection
TAILORED FOR FAST REFRACTORS - Optimized for f/5 to f/7.5 focal ratios, perfect for short, optically fast scopes
READY FOR PROFESSIONAL SETUPS - Compatible with 2" focusers and requires just 55mm backfocus for easy installation
TRUE FOCAL LENGTH PRESERVATION - Maintains your telescope’s native focal length while flattening the field of view

The Orion 8893 Field Flattener is engineered to eliminate field curvature in short, fast refractor telescopes (400-660mm focal length, f/5 to f/7.5), delivering sharper stars across the entire field. It features interchangeable M42 and M48 camera adapters for versatile imaging setups, preserves the telescope’s focal length, and fits 2" focusers with a 55mm backfocus requirement, making it an essential upgrade for serious astrophotographers.

Specifications

Package Dimensions L x W x H	14.7 x 7.9 x 6.9 centimetres
Package Weight	295 g
Product Dimensions L x W x H	14.3 x 7 x 7 centimetres
Item Weight	7.5 Ounces
Brand	Orion
Max Focal Length	650 Millimetres
Objective Lens Diameter	55 Millimetres
Part number	8893
Focus type	Manual Focus
Guaranteed software updates until	unknown

Have a Question? See What Others Asked

I have the orion eon 85mm ed-x2, is this the recomended flattener for it?

Maybe i didn't ask this right. the 8893 fits my camera ok but not my telescope with 1.25" focuser threads. please, a link to an adapter that works? tu

Can this be used with an orion apo doublet ed80 that has a 600mm fl at f/7.5? i'm planning on connecting a canon eos 70d onto it with a t-ring.

This is good for the orion astroview 120st?

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