Offaxis Guider for Takahashi & Canon EOS DSLRs
No moving parts
Optical Path: 9,5mm. Additional 0,25mm-3,75mm by distance ringset for Takahashi M54 thread.
Incl. T2 Platform for Guidecamera
Worlds first: Off Axis Guider for Canon EOS with tilting Function
This off-axis-guider by Lacerta was specially made to connect Takahashi corrector with M54 thread to Canon DSLRs. Besides that there is a novel feature: An eventual tilting problem can be adjusted by 3 screws on the case housing. If you encounter de-focused stars on one side of your photo, it is possible to adjust the tilt and get perfect stars to the edge. There are 3 little screws on the case housing that adjust little balls inside the OAG body, which emerge on the front side and are able to de-tilt the mechanics. The adjustment can be done without taking off the OAG.
Optimized for Takahashi
The Guide-Prisma was fixed to counteract the many “OAG diseases ” such as adjusting guideprisma, or reflections or diffraction symptoms occurring by the light. Two versions are offered with a smaller or a larger prism. The position of the prism allows for full format cameras up to f/4 (version “S “-short), or up to f/7.3 (version “L “-long “) or slow tubes to be able to work without vignetting.
In most cases the L(ong) version is selected, advantage is that guiding stars are easier acquired. The position of the prism achieves no vignetting when using APS-C cameras up to f/4, Full-Frame Cameras up to f/7.3 or with long tubes (e.g. Takahashi Mewlon with 0.73x Reducer). When using a fast telescope either the “S”-Version can be used or the “L”-Version if small diffraction spikes are acceptable when using the Off-Axis-Guider.
The optical path with 9.5mm is 2.75mm shorter than a Standard Takahashi – Canon DSLR combination requires. Professional photographers know with a shorter focal length (optical design dependent) the optimal distance between flattener and camera sensor can be less. This leaves enough adjustment for a combination with other Takahashi reducers, filters or third-party optics. An M54 spacer ring set (2mm, 1mm, 0.5mm & 0.25mm) for any combination is included for free.