Manufacturer: OPTEC
Product number: OP17409

EUR 452,00


incl. 19 % VAT (DE)  
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NextGEN Ultra WideField 0.7XL - for systems with flat field of view
The OPTEC NG MaxField 0.7x is optimized for telescopes with good optical correction and relatively flat field of view, such as apochromatic f/8 refractors or Cassegrains, like the Vixen VC 200 and similar ones with built-in field flattening. It increases the luminosity of the instruments by a factor of 0.7x , so an f/8 apo becomes an f/5.6 instrument.

A special feature is that the focus position is preserved. This makes the focal length reducer especially interesting for systems with low working distance, like the Pentax SDHF 75 or refractors from Tele Vue. The reducer works with all systems from f/5.6 to f/20.

With the MaxField 0.7x you can use sensors with a diagonal of max. 18 mm. The field is optimally corrected in this range.

The optical design of the NextGEN 0.7XLx was optimized with ZEMAX for best possible star imaging between 450 and 650nm. The goal was the smallest possible star diameter for Schmidt-Cassegrain telescopes while correcting the field errors of these telescopes.
Illuminated and fully corrected field:18 mm
Connection on telescope side:2" plug-in sleeve
Filter thread:2" filter thread (telescope side)
Working distance:63.4 mm
Connection on camera side:via adapter to T2 and M48
reducer




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