Wide-field astrophotography, terrestrial photography, or astro observation—the FMA180 Pro Sextuplet ED Astrograph from Askar does it all in a compact package with premium optical and design elements.
Its fast f/4.5 focal ratio enables a wide field of view and collects light from nebulae and other deep sky objects, but the refractor can also be mounted on a DSLR for night-sky or daytime use. The precise internal focus has the strength to support a camera, which is easily mounted via T-ring on the M48x0.75 rear thread.
Uses
- Wide-field astrophotography: sharp images of the night sky, galaxies, constellations, and other objects
- Visual: a fast grab-and-go option for planetary and lunar observation with an optional visual back and appropriate spacers
- Terrestrial: easy camera attachment with an optional T-ring allows use of the FMA180 pro as a long lens
- Finderscope: can be mounted on another OTA
Optical Tube Assembly
- Fast f/4.8 focal ratio reduces astrophotography exposure times and yields a wide field of view
- Apochromatic six-element lens design with two extra low-dispersion elements curtail chromatic and spherical aberrations for true color rendition without distortion
- Base for finderscope or other accessories
Focuser
- Internal focus design helps support the weight of astrophotography cameras and related gear
- 44mm image circle allows for full-frame photography
- 55mm back focus
- 360° rotator provides framing options
Mounting
- OTA only, mount head and tripod required for proper use
- Vixen-style dovetail plate is compatible with any alt-az or equatorial mount with a Vixen-style saddle
- Weight: 4.3 pounds