Takahashi FSQ106 Apochromat Refractor OTA
Ref: TQE10600
£4,799.00
The astrophotographers see in the FSQ-106ED one of the best astrographs available for the amateur astronomers built without compromise in Japan. With its focal length of 530mm, an image circle of 88mm and a photographic field of 9,5°, it acts as teleobjective for most powerful CCD and DSR/DSLR cameras of the market. Based on a Petzval quadruplet optical design with apochromatic ED glasses, the FSQ-106ED is optimized for wide-field imaging of the deep sky. It offers a flat field, and comes equiped with a built-in camera angle adjuster and an oversized rack-and-pinion focuser. To minimize the size of the optical tube, it includes a retractable dewshield and an important backfocus.
Genuine authorised Takahashi product with full UK warranty
The optical tube assembly is equipped with a retractable dew shield, 7x50 finder, tube ring and camera angle adjuster.
FSQ-106ED optical design
The challenge of any astrographer consists in preserving a perfectly flat field while at the same time the DSR/DSLR and CCD sensors increase by size in an extraordinary way. Takahashi thus chose a modified Petzval quadruplet apochromat, with integrated flattener, in order to cover the largest possible field, while minimizing the geometric aberrations, in particular the curve of field and the astigmatism inherent in Petzval design. From the point of view of the chromatic aberrations, the use of ED glass makes it possible to obtain an exemplary correction. Finally, the result is simply impressive of flatness and image contrast.
Oversized rack and pinion focuser
To replace the traditional camera angle adjuster, Takahashi integrated an oversized rotative rack-and-pinion focuser in the design of its optical tube. This device offers a perfect rigidity to all the types of photographic assembly, even the heaviest. Voluntarily limited, the rack-and-pinion course is controlled by a double system of focusing including a 1/7 microfocuser.
Specifications:
Optical design Modified Petzval quadruplet apochromat
Aperture 106 mm
Focal length 530 mm
Focal ratio F/5.0
Resolution 1.09"
Limiting magnitude 11.8
Light grasp 220x
Image circle 88 mm
Photo field 9.5°
Back focus 186.38 mm
Metal back 178 mm
Finder 7x50
Tube ring
Camera angle adjuster
Special order item - please call 01932 703605 for delivery times
