Askar 80PHQ 80 mm f/7.5 Quadruplet Flatfield Super APO Astrograph - with Optics Test

Askar 80 mm f/7.5 APO Astrograph

With the PHQ series Askar has developed flatfield apos, where the imaging quality on the axis and in the field is paramount. The focal ratio is moderate, but the stellar imaging is excellent. The 80 mm PHQ offers magnifications up to over 200x with good contrast.

The Askar 80PHQ is a real all-rounder

The transportable telescope can be used for almost all areas of amateur astronomy and offers a very good optical performance.

Deep sky astrophotography with 600 mm focal length and a very large corrected field of view. Everything from high-resolution cameras with fine pixels to full-frame cameras can be used.

Easy to use - just focus and you are at the optimum distance for very good field correction.

Planetary and lunar photography, due to the very good correction of the optics on the axis and in the field, sharp and high-contrast images are achieved, even with focal length extension.

Visual observation, the generous working distance also allows the use of 2" accessories.

The photographic 3" rack & pinion focuser:

The 10:1 dual-speed CNC focuser is optimized for photography and can handle a load of up to 8 kg. The travel range of 110 mm is very generous. The drawtube is adjusted via rack-and-pinion drive. The drive is decoupled from the bearing of the drawtube. This guarantees fine and precise adjustment even at maximum load. In addition to the 1.25" and 2" receptacles, the focuser also offers threads for screw adaptations.

Astrophotographic results obtained with this telescope on Astrobin

Here you can find some astrophotographs made with this telescope model: Link to Astrobin

How we hand over the apo to the amateur astronomer:

Every single 160APO is checked in our technical department before it is put into storage, in order to guarantee a consistently high product quality.

The mechanics are tested and the focuser is optimally adjusted.

The lens is cosmetically checked and cleaned. We also check that all counter screws are correctly tightened. These often loosen during transportation.

The optics are collimated and the result is checked on the optical bench. The telescope is given a serial number.

An optical test is carried out, which is enclosed with the telescope (star images and ronchi image on the optical bench in autocollimation).

Only then are the telescopes handed over to the warehouse and prepared for dispatch.

Technical Information

Teleskop-Service has collected a lot of helpful information about refractors and provided it in English as a PDF file: refractors.pdf

Astrophotographic results obtained with this telescope on Astrobin

Here you can find some astrophotographs made with this telescope model: Link to Astrobin

Safety informations: PDF Download