Description
TS Universal 2-Inch Field Flattener for Refractors
The TS Universal 2-Inch Field Flattener for Refractors from f4 to f9 is a flat field imaging corrector for almost ALL refractors with a 2″ focuser, producing pinpoint stars from centre to edge!
The flattener has an optical diameter of 45.5 mm and offers reduced vignetting compared to narrower T2 types. Fitting is M48 at both ends.
For most refractors the optimum back focus distance is around 109mm from the M48 thread to the camera’s sensor.
Experience has shown that the flattener has a large tolerance for deviations from the ideal distance. A 5% deviation does not cause any deterioration of the image quality with an APS-sized sensor.
For smaller sensors somewhat larger deviations may be acceptable, but please bear in mind that for the best resolution the distance should be set as precisely as possible.
For refractors with a fast focal ratio we recommend a longer back focus distance of approximately 120-123mm.
Please ask if unsure about adaptation and spacing!
Item Code – TSFlat2
UK Delivery
Prices include postage to all mainland UK addresses, except where indicated. Larger items may attract a surcharge for off shore or remote locations.
When your item is dispatched, you will receive an email from our shopping cart saying ‘Your order is complete’
We use Royal Mail and Courier services, whichever is more appropriate for the weight and value of your order.
International Delivery:
Website prices DO NOT include International delivery costs unless specified.
We are happy to ship to most countries. We use a variety of Royal Mail and Courier services, depending on the weight, size, value and urgency of your order.
Place your order via the shopping cart and you will be advised by email of additional shipping charges prior to the processing and dispatch of your order.
Or simply email us for details of shipping charges to your country before you place your order.
Some items which are particularly popular with overseas purchasers already display, in the purchase menu, combined purchase and shipping costs to various regions adjusted for UK VAT (sales tax) where necessary.
If you reside outside the European Union, please check with your customs authorities for details of any import taxes, duties and other charges that may be imposed on entry to your country. We have no control over these.
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