Askar FRA400 72mm f/5.6 Refractor
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Vai al moduloAskar presents a new refractor, currently the best-selling of the quintuplet series, the FRA400 72mm is a tool suitable for astrophotography.
Thanks to the air-spaced quintuplet, it provides a flattened field up to 44mm diagonal without the addition of additional flatteners / reducers.
This new and huge APO guarantees color correction at the highest levels thanks to a precise and maniacal construction by Sharpstar; the image is not affected by any chromatic aberration and remains very clear and well contrasted.
The FRA400 refractor is ASKAR's flagship of 400mm, you will not find a product with the same characteristics at a lower price!
Multiple inspection of the optics before delivery and guaranteed customer assistance
All refractors sold are super controlled, this to ensure maximum efficiency to the customer who places his trust in us in buying his instrument.
This provides for the control on the optical bench of all the optics and mechanics, as it prevents any problems deriving from unglued optics or mechanics that are not functioning correctly.
The very precise mechanics guarantees universal application in every astronomical field and extreme satisfaction in use.
In addition to the improvement of the optics, the FRA400 also offers an improved mechanics that leaves nothing to chance, in this way the performance of the apochromat can be fully exploited even in astrophotography.
FPL53 apochromatic quintuplet spaced in air with multi-treatment on every optical surface, this makes the optical quality very good and no chromatic aberration even at maximum magnification.
The lens of this apochromat is composed of an air-spaced triplet also composed of elements provided by the famous Ohara (Made in Japan), in fact the central element is composed of ED Ohara SuperAPO-FPL53 glass.
The ultra-modernized optical design allows for precise optical correction across the entire wavelength range.
ASKAR quality control
One reason why ASKAR refractors are very famous and of very high quality is their quality control, in fact, interferometric and optical tests are conducted on all the apochromats in the house, making the work done by these instruments impeccable.
ASKAR 3" Rack & Pinion focuser with integrated rotator
This refractor uses a brand new 3" ASKAR focuser, with 360° rotator integrated rotator to always keep the camera in the correct position, thanks to the Rack & Pinion system, the focuser can withstand very heavy loads without any torsion problem.
The 1:10 reduction mechanism offers precise focusing and ideal for astrophotography.