Telescopes.net | ASA (Astrosysteme Austria) | Woodland Hills

The ASA 8" 8H Astrograph Hyperbolic Primary with 3" Focuser uses a hyperbolic primary mirror. With high quality and low expansion Suprax primary and secondary mirrors (P/V <1>97% reflectivity) and with their own interferogram, the ASA astrographs are an astrophotographers dream! To make collimation easier for the user, ASA has implemented a centered triangle reference mark on the primary mirror.

ASA has developed a fantastic line of high quality Cassegrain Telescopes perfectly geared for extensive research or high level astro-imaging. The ASA 600mm f/9 is a fast high quality classical optical system that uses a perforated parabolic primary mirror to form the image behind the cell and uses the hyperbolic secondary mirror for focusing by moving it along its axis via a computerized electrical drive system.

ASA has developed a fantastic line of high quality Ritchey-Chretien Telescopes perfectly geared for extensive research or high level astro-imaging. The ASA 600mm f/8 is a fast high quality optical system that uses a hyperbolic primary mirror to form the image behind the cell and uses the secondary mirror for focusing by moving it along its axis via a computerized electrical drive system. These optical systems are similar to Cassegrains, but has improvements in the field correction even without a field-flattener lens being used.

ASA has developed a fantastic line of high quality Cassegrain Telescopes perfectly geared for extensive research or high level astro-imaging. The ASA 500mm f/9 is a fast high quality classical optical system that uses a perforated parabolic primary mirror to form the image behind the cell and uses the hyperbolic secondary mirror for focusing by moving it along its axis via a computerized electrical drive system.

ASA has developed a fantastic line of high quality Ritchey-Chretien Telescopes perfectly geared for extensive research or high level astro-imaging. The ASA 500mm f/8 is a fast high quality optical system that uses a hyperbolic primary mirror to form the image behind the cell and uses the secondary mirror for focusing by moving it along its axis via a computerized electrical drive system. These optical systems are similar to Cassegrains, but has improvements in the field correction even without a field-flattener lens being used.

ASA has developed a fantastic line of high quality Cassegrain Telescopes perfectly geared for extensive research or high level astro-imaging. The ASA 400mm f/9 is a fast high quality classical optical system that uses a perforated parabolic primary mirror to form the image behind the cell and uses the hyperbolic secondary mirror for focusing by moving it along its axis via a computerized electrical drive system.

ASA has developed a fantastic line of high quality Ritchey-Chretien Telescopes perfectly geared for extensive research or high level astro-imaging. The ASA 400mm f/8 is a fast high quality optical system that uses a hyperbolic primary mirror to form the image behind the cell and uses the secondary mirror for focusing by moving it along its axis via a computerized electrical drive system. These optical systems are similar to Cassegrains, but has improvements in the field correction even without a field-flattener lens being used.

The ASA 4" Wynne Corrector will correct the field of view on the N-Series Astrographs. It is built upon the design of Philipp Keller. All correctors have enough backfocus to connect to all popular cameras.

When utilizing a Ritchey-Chretien telescope system, it should be utilized with a field-flattening accessory lens to accomplish a bigger useful field of view over a truly flat image plane.

At the point when utilizing an established Cassegrain telescope system, it ought to be utilized with a field flattening accessory to accomplish a bigger helpful field of view.