Linear astigmatism of confocal off-axis reflective imaging systems with N-conic mirrors and its elimination
![1 st V : The first version for the layout for an off-axis telescope... | Download Scientific Diagram 1 st V : The first version for the layout for an off-axis telescope... | Download Scientific Diagram](https://www.researchgate.net/publication/234155489/figure/fig2/AS:300097976979461@1448560341477/1-st-V-The-first-version-for-the-layout-for-an-off-axis-telescope-MCAO-relay-optics.png)
1 st V : The first version for the layout for an off-axis telescope... | Download Scientific Diagram
![Construction of freeform mirrors for an off-axis telecentric scanning system through multiple surfaces expansion and mixing - ScienceDirect Construction of freeform mirrors for an off-axis telecentric scanning system through multiple surfaces expansion and mixing - ScienceDirect](https://ars.els-cdn.com/content/image/1-s2.0-S2211379720318210-gr2.jpg)
Construction of freeform mirrors for an off-axis telecentric scanning system through multiple surfaces expansion and mixing - ScienceDirect
![Make Off-Axis Aperture Stop For Your Telescope / Skywatcher Heritage 100P Reflector Telescope - YouTube Make Off-Axis Aperture Stop For Your Telescope / Skywatcher Heritage 100P Reflector Telescope - YouTube](https://i.ytimg.com/vi/Ns8ham4Wtrk/maxresdefault.jpg)
Make Off-Axis Aperture Stop For Your Telescope / Skywatcher Heritage 100P Reflector Telescope - YouTube
![Construction of freeform mirrors for an off-axis telecentric scanning system through multiple surfaces expansion and mixing - ScienceDirect Construction of freeform mirrors for an off-axis telecentric scanning system through multiple surfaces expansion and mixing - ScienceDirect](https://ars.els-cdn.com/content/image/1-s2.0-S2211379720318210-gr1.jpg)