Optical Tube Assemblies(OTA's)

Celestron 36cm Rowe-Ackermann Schmidt Astrograph OTA A 36cm aperture, f/2.2 optical system designed for professional applications that require both a wide field of view and resolution, such as space surveillance and other scientific applications...

Takahashi CCA-250

Takahashi MEWLON M-300CRS

Takahashi TOA-150B