Wow...Upon removal of the diagonal and housing assembly I soon found out what was holding the original diagonal......a really big pile of COTTON!!!

Al Paslow Astronomy Collection

Images and events of personal interest.

An unusual original Cave 10 inch f 7.2 Newtonian Telescope. E-mail me at alpaslow@yahoo.com

This instrument still has original mirror coatings dated Aug 10, 1958 !

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Al-Paslow > 1958 Cave 10 inch f-7 Telescope photo

Al-Paslow > Wow...Upon removal of the diagonal and housing assembly I soon found out what was holding the original diagonal......a really big pile of COTTON!!!

Al-Paslow > Aother closeup of the Cotton within the cupport. Another thing to notice, that CAVE like Ken NOVAK, both use similuar spider designs. (Although I don not believe NOVAK used cotton as a mirror support!)

The cylinder has a beveled edge that the diagonal mirror fits into from inside; hence it supports the optic by the mirrors face to an extent. Actually this rim or bevel runs the entire circumference of the ellipse, and adds a tiny amount of obstruction to the entire system.

Al-Paslow > I placed the cotton into a plastic bag to keep dirst & moisture out. Will I reuse the cotton? Well...if I get a better idea no, but if I do use cotton, this original material will simply be reassembled.

Al-Paslow > This image shows a portion of the area where the diagonal was supported.

Wow...Upon removal of the diagonal and housing assembly I soon found out what was holding the original diagonal......a really big pile of COTTON!!!

Camera: Nikon (E990) |

More details: exif |

Original size: 2048px x 1536px |

Current: 400px x 300px |

Other sizes: Small • M • L • O • save photo |

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Keywords: mirrors cave

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