Brand and Model: | TeleVue Nagler Type 6 2.5mm |
Price ($USD): | $280.00 |
Type: | Ultra Wide Angle |
Focal Length: | 2.5 mm |
Barrel Size: | 1.25" |
Apparent FOV: | 82.0 degrees |
Field Stop Dia.: | 0.0 mm |
Eye Relief: | 12 mm |
Elements: | 7 |
Weight (lbs): | 0.6 |
Description: | This is an optically superb and exceptionally short focal length ultra wide field eyepiece. This latest premium 1.25†TeleVue Nagler Type 6 uses seven optical elements for optimized performance across a very wide field of view. Several different extra low dispersion glass types and specialized coatings are employed for improved contrast and longer eye relief than previous Nagler designs, even those acclaimed as being among the finest wide field eyepieces available. The 2.5mm Nagler uses a built-in Barlow to achieve high power without reducing the eye relief to an unacceptably short value. At a usable eye relief of 12mm, the 2.5mm Nagler would normally vignette the field of view for eyeglass wearers. However, since the 82 degree field is so wide that you can’t see the full field without having to move your head from side to side to take it all in anyway, vignetting in the conventional sense is not a problem.
Astronomics Product Review |