These metal reflector telescope mirror cells are designed for an 800mm FL x 80mm Reflector Telescopes with a 117mm outer diameter and have been used for display at trade shows.
Mirrors may need some light cleaning or have some slight nearly imperceptable scratches from handling. For those of you in the know, minor signs of use should not affect the views if you plan to build your own. We can include a copy of mirror cleaning instructions if you would like.
3pc Set includes:
80mm Spherical Primary Mirror + Metal Cell
31mmX22mm Secondary Mirror + Metal Cell
Hardware to bolt to your own tube (OTA-Optical Tube Assembly)
1.25 plastic focus housing for tube with 117mm outer diameter.
ID (Inner Diameter) of primary and secondary Mirror Cells: 118mm
Diffraction limited optics (1/4 wve in Sodium Light)
Plate Glass (Both Primary & Secondary)
Aluminized (92%) and SiO(Quartz Overcoat)
Heavy Duty Push/Pull Collimation Screws on back of Primary Cell
4 Vane Spider Cell for Secondary (31mm X 22mm)
Secondary average obstruction: 25% (linear) app 6% total area.
Resolving power in arc seconds: 1.4
Paint color on cell may vary --may be like photo(Charcoal) or maybe Gray or Black..but very similar
thin silver/chrome focus wheel cover plates shown in the photo MAY be
missing when you get your order. We DO try to ship with these attached
on but sometime they fall off in transit to and from Trade shows and we
do not stock these. They are cosmetic only.
FREE ship rate is for within the Continental U.S.
Filed under: Eyepieces & Accessories