Telescope 38mm X 27mm Secondary Mirror with 4 Vane Spider Cell(Metal) For Sale
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Telescope 38mm X 27mm Secondary Mirror with 4 Vane Spider Cell(Metal):
$15.00
While supplies last!
NEW in factory carton for the telescope Builder!
38mm X 27mm Secondary Mirror + Metal Cell (Outer Diameter) of Cell: Approximately 145mm
ID (Inner Diameter) of Cell: Approximately 135mm
Plate Glass Aluminized (92%) and SiO (Quartz Overcoat)
4 Vane Spider Cell for Secondary (38mm X 37mm)
Secondary average obstruction: 25% (linear) app 6% total area.
These were used with both 102mm and 120mm Primary Mirrors to achieve various focal lengths depending on whether a Cat lens was used. Most of the telescopes these were used on had FL's of 900m, and 1000..larger FL's were made but with CAT lens.
Charcoal paint finish.
See our other listing for Primary Mirrors that may be used with this Secondary Mirror to build a telescope of your preferred design.
Free Ship is for within the Continental U.S.
