Manufacturer: -TS Zubehör
Product number: 2023-2711-17

EUR 699,00RRP EUR 899,00you save 22.2% (EUR 200,00)


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  • Details..
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Massimo Riccardi designed a perfectly working 3 element coma corrector for Newtonian telescopes.The corrector has a backfocus between 66 mm to 71 mm which is perfectly enough for DSLR cameras but also for imaging trains of CCD cameras, off-axis guiders and filter wheels.


Required backfocus and focuser:

Due to the length of the corrector the newtonian need a focus position lying 170 mm above the tubes wall. It is therefore necessary that the corrector disappears inside the focusers drawtube, which means that the drawtubes diameter must at least be 62.4 mm.

The huge 3" JMI focuser or the 2.5" Moonlite offer those required specifications and we designed our own adaptes for an optimized cooperation between focuser and corrector.

Teleskop-Service offers the ONTC Newtonian line - perfect for the TS 2.5" Wynne corrector - so you will have a wonderful fast astrograph for astrophotography with big sensors.


Working distance from the 65 mm thread of the corrector - depending on the focal length.
Focal length 600 mm - Working distance 66 mm
Focal length 800 mm - Working distance 68 mm
Focal length 1000 mm - Working distance 69.5 mm
Focal length 1200 mm - Working distance 69.75 mm
Focal length 1500 mm - Working distance 70.5 mm
Focal length 1800 mm - Working distance 71 mm




Adaptions to M68 or M48 threads:

For small and medium sized sensors the adaption to M48 - 2" filterthread is enough. The adaptor "TSTV-M48A" offers a very short connection to M48 with only 1.1 mm length. You can adapt the "TSOAG9M48" Off Axis Guider with only 11.2 mm length.

For bigger sensors we suggest the professional ZEISS Level M68x1 thread. The adaptor "M65i-M68a" needs no optical way and changes the 65 mm thread to the M68x1 thead. You can connect the big "TSOAGM68" Off Axis Guider with only 16.7 mm length. So you will have space enough for your DSLR or CCD camera.



Off-axis performance with a 12" f/4 Newtonian

The spot diagram (image above) shows the quality in field with a camera sensor of 24x36. The size of the square is 25x25 micron.


The Wynne corrector- optical design

The corrector is a 3 element system that doesn´t affect the original focus position.
Connection camera side:65 mm male thread
Connection focuser side:M68x1 male thread
Mechanical length of the corrector without the 65 mm thread:120 mm
Back focus:66 mm to 71 mm counted from the 65 mm thread (thread is not being counted)
Lens design:3 elements fully coated
Tube:CNC machined body with anti reflex surface
Focus position:The focus position won´t change
Focal reduction:The corrector reduces the focal length of the system by a factor of 0.95x
Suitable for:Newtonian telescopes from 10" aperture and an aperture ratio of f/3
TS 2.5" Wynne Coma Corrector
Dust caps


Question:
How do you have to measure the working distance?

Answer from Teleskop-Service:
The working distance is measured from the beginning of the connection thread on the housing of the corrector (see example picture):




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