RCOS 70mm Field Flattener...
For RCOS Telescopes equipped with 10" Ritchey-Chrétien Astrograph (RCA) Optics.

| Product | Reviewer | Date | File |
| Field Flattener - 68mm | Russell Croman | October 2004 |
Designed exclusively for the 10RCA, this Field Flattener reduces field curvature and off axis astigmatism, while also reducing off axis spot size. The FFC mounts inside of the 10RCA Primary Mirror Hub taking up zero back focus. There is no telecompression and will allow the optics to operate at their native f/ratio.
Designed to work with the 10RCA. Ideal for use with 35mm square format CCDs.
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RC Optical Systems Field Flattener (FFC) |
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| ITEM: | PRICE: |
| Field Flattener. Part #FFC-68mm |
$1200 |
| Mounting Plate and FIA Adapter (not required if used with the PIR). Part #FFC-10RCA-Mount | Call |
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