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TSFlat2,5

-TS Optics
in stock
Universal field flattener for refractors from f/5 to f/9 - 2.5"


299,00 EUR
incl. 19 % Tax
excl.Shipping costs
Description

 

TS Optics Field flattener and -corrector for f/9 - f/9 refractors - 61.5mm free aperture
... exceptional field correction for all refractors combined with large camera sensors

TSOptics 2.5

The TS 2.5" flattener's advantages:

Many refractor correction lenses are not able to illuminate even medium-sized sensors without vignetting or other abberations. For this reason, Teleskop-Service has designed a 2" corrector with very good characteristica and which has proven high-level results with many systems: Link to the 2" Flattener by TS

The bigger 2.5" flattener by TS offer the same characteristica but is able to deal with even bigger sensors. Compared with 2" (or smaller T2 systems), this flattener can illuminate full-format (24x36mm) sensors even at fast refractors without vignetting.

The corrector is suitable e.g. for the following refractors:

All systems with a focuser bigger than 2". For all relevant makes, we offer adaptions: Starlight Instruments Feather Touch, Astro Physics, William Optics, Astro Professional and TS Apos. The photographic speed may be between f/5 and f/9.

The 2.5" flattener offers generous back focus:

Like the smaller 2" version, we have designed this flattener with a wide back focus distance. So it is no problem to add Off-Axis-Guiders, filter wheels etc. The recommended distance between the flattener's M69 thread and the focal plane is 91.5 mm.

The TS field flattener has deliberately been designed without focal reduction:

By concentrating of pure removal of field curvature, an exceptional result has been achieved without secondary abberations like coma or astigmatism. Additionally, the flattener is not limited to certain telescopes or focal lengths. It is universally usable for nearly any refractor from f/5 through f/9.

Technical details:

-- Field flattener for f/5 - f/9 refractors without influencing the focal length
-- Free aperture: 61.5mm
-- Threads on telescope side: M68 male and M63 female
-- Thread on camera side: M69 female
-- Recommended distance between camera side thread and focal plane: 91.5mm

Scope of delivery:

-- Field flattener in robust carton box


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Connection schemes:
The displayed articles can be selected directly in the "accessories" section.

Field Flattener connection scheme

On the flatterner's left side, find the adapters to the focusers:

M74-Flat25 100/600mm ED by TS Optics
OAZ3-Flat25 All Astro Professional Apos with 3" focuser (from 115mm aperture)
TS Individual APO with 127mm aperture
TS Individual Achromat with 152mm aperture
William 3" focusers
M63a-Flat25 2,5" Feather Touch focusers
FT3-Flat25 3" Feather Touch focusers
AP27-Flat25 Astro Physics 2,7" focusers

On the flattener's right side, find adaptions to different cameras:

These adaptions allow versatile connections to nearly all common systems. In order to calculate the right distances, we noted the remaining distance to the focal plane. So you can determine the necessary extension tube for the correct distance.


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A particularly recommended combination - the 2.5" Flattener and the 2-5" Off-Axis-Guider:

TS Optics 2.5Depicted with flattener - ready for DSLR imaging

The off-axis-guider works perfectly with the flattener and can be screwed directly to it allowing the use of its full aperture. The adapter concept is designed for enough back focus even for (D)SLR cameras.

The connection scheme:

Field flattener & OAG connection scheme
Via our short adaptions, you can attach a (D)SLR camera directly. We have ready systems for Canon EOS, Nikon and 4/3 (Olympus four thirds).

Alternatively, you can also adapt directly to T2 (Adapter 2-T2s) with 45mm of back focus. Enough for all Astro-CCD cameras.

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Accessory recommendations:

All these adapters are found in the "accessories" section. If you have any questions, please feel free to contact us directly: info@teleskop-service.de


nach oben
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M48 Adaptor for TS 2,5
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TS M69x1 extension tube 10mm - fitting to TS Flattener 2.5
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TS Giant Off Axis Guider - 60mm clear aperture - length only 31m
TS Giant Off Axis Guider - 60mm clear aperture - length only 31m
nach oben User reports
NGC 6914 and vdB 131/132

Astro photographer Michael Hoppe used the TS 2.5" flattener with his Atik 11000 (45mm sensor diagonal) in combination with a Astro Physics Starfire 155 with success. The flattener has proven his sharpness also in combination with this demanding telescope.

-- Telescope: Astro Physics Starfire 155
-- Field flattener: TS 2.5" Flattener
-- Camera: ATIK 11000M
-- RGB: with Trutek filter wheel and Astronomik RGB filter set
-- Integration time: 3x10 per colour channel

NGC 6914 through STARFIRE 155 and TS Flattener with ATIK 11000M
Full field frame

NGC 6914 through STARFIRE 155 and TS Flattener with ATIK 11000M - Edges of the field
100% crop of the field edge

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E-Mail: info@teleskop-service.de · Telefon: +49 (0)89-1892870 · Fax: +49 (0)89-18928710
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