Tubo ottico Maksutov Cassegrain...
Takahashi TKA82595 1.5x Extender for Mewlon 250/300 and CCA-250 astrographs.
The Takahashi Extender-CR 1.5x is designed specifically for the CCA and Corrected Mewlon series of telescopes. It increase the focal length of these instruments without degrading the optical performance, maintaining pin point stars across the field.
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