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  • Correttore 2" per RC GSO Correttore 2" per RC GSO

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TS-Optics 2" field flattener apo refractors

Product code: TSFLAT2

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Quick Overview

2" field flattener for TS-Optics apo refractors offers optimal field correction and illumination with diagonal up to 45mm. When the camera's sensor diagonal is larger than 25mm, we recommend this flattener. On camera side this corrector has M48x0.75 thread with an optimized working distance between 108 and 128 millimiters (based on telescope focal lenght) so there's a lot of space to install many astrophotography accessories.

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- no influence on the focal length
- anti-reflective multi coatings
- direct connection of off-axis-guiders etc. with M48x0.75 thread
- easy adaption - fits directly into the 2" focuser

Backfocus distance:

- with focal length <450 millimiters: 128mm
- 450-490mm focal length 123 mm
- 500-550mm focal length: 118 mm 
- 560-590mm focal length: 116 mm
- 600-690mm focal length: 113 mm
- 700-800mm focal length: 111 mm 
- with focal length 800 millimiters: 108mm

Which adapters do I need to connect my camera?

With long back focus, this field flattener offers enough space to integrate additional accessories like off-axis-guiders, filter wheels or filter drawers. 

Direct adaption of a DSLR camera to the flattener:

If you want to use a DSLR camera, in order to connect to the corrector and have the DSLR sensor at the right distance of the corrector lens, you need to add the TSFlat2A accessory.

Adapting an individual CCD camera:

A CCD camera has a lower backfocus than a DSLR camera so you will need to add, after the TSFlat2A accessory, a T2 extension. To recommend the right articles, please write us with the back focus distance of your camera (distance from connection thread to sensor surface) and eventually existing/wanted filter wheels, off-axis-guiders etc.

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