TS-Optics NEWTON Coma Corrector 1.0x Riccardi Design - 3" Connection
3-element coma corrector for Newtonian telescopes from f/3 to f/6 with best-in-class illumination.
♦ Short design with a length of only 99mm for better illumination than all other Wynne concealers. The entire format is not only completely corrected, but also brightened.
♦ 65mm working distance for enough space for all fittings.
♦ ZEISS M68 style threaded connection – This opens the entire range of M68 adapters.
♦ The corrector works without changing the focal length.
♦ The corrector requires a focus position of 150mm above the tube, which is less than all other Wynne correctors and keeps the secondary mirror smaller.
♦ Designed by world-renowned optical designer Massimo Riccardi - a high-end reference class corrector.
TS-Optics 3" Wynne Newton Coma Corrector with Enhanced Illumination
Teleskop-Service commissioned well-known optics designer Massimo Riccardi to further develop the proven design of the Wynne coma corrector. The problem with all Wynne concealers is lighting. Due to the overall length, the corrector's field lens casts a shadow. For example, Wynne 3" correctors with f/4 optics don't even get 30mm of full illumination.
The result of the development is the 3" Wynne TS corrector with significantly improved illumination and excellent sharpness in the field. In this way cameras with full-frame sensors and even large-format sensors can be used. At the same time, we were able to increase the working distance to 65mm, which makes it practical, all commercially available CCD and DSLR cameras can be used.The working distance here corresponds to the distance from the center of the rearmost lens surface to the sensor, i.e. back focus, and is largely independent of the telescope.
Here are the working distances, calculated directly by Massimo Riccardi:
250/4-------64mm
250/5-------64.4mm
300/4-------65mm
300/5-------65.2mm
400/4.5-----65.8mm
These values are very close to each other, which explains why in practice a single distance of 65 mm can be used without loss of quality.
The benefits and features of the Wynne TS 3" concealer at a glance:
♦ Due to the short design of less than 100 millimeters, illumination is significantly improved compared to other Wynne 3" correctors.
♦ The corrector fits directly into the 3" sockets of the focusers - adaptation is very easy.
♦ Thanks to the practical M68 connection thread, screw connections to the focuser through individual adaptations are just as possible as direct connection of our range of M68 adapters, such as our M68 off-axis guide.
♦ Concealer is at least equal to conventional long Wynne concealers.
♦ Each lens is multi-coated with high quality. There are no reflections or ghosting, even with bright stars.
♦ The case is CNC machined and features a clean blackened interior.
Dot plots with different Newton telescopes:
Newtonian 250mm f/4 with coma corrector 3" TS/Riccardi Wynne
Newtonian 254mm f/4.6 with 3" TS/Riccardi Wynne coma corrector
Newtonian 300mm f/4 with 3" TS/Riccardi Wynne coma corrector
Newtonian 300mm f/5 with 3" TS/Riccardi Wynne coma corrector
Specifications:
| Type: | Wynne 3" Newtonian Coma Corrector |
| Number of elements: | 3 lenses - 3 groups |
| Telescope side connection: | 3" connector |
| Connection to camera: | male M68x1 thread - thread length 4 mm |
| Length: | 99 mm (without male M68 thread) |
| Working distance: | 65 mm from the lens surface or 64.5 mm from the M68 thread |
| Illumination: | full illumination up to 45 mm, 90% illumination up to 55 mm diameter |
| Correction: | very good field correction up to 55 mm diameter |
| Change of focal length: | no change of focal length |
| Focus position: | the corrector moves the focus position 17.5 mm more far away from the tube |
| Weight: | approx. 600 g |
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