William Optics Apochromatic refractor AP 71/420 Gran Turismo GT 71 OTA

Description:

The Gran Turismo refractor is an apochromatic triplet with FPL-53 element for highest color purity and strong contrast! A lens telescope that is versatile and leaves little to be desired.

Visual observation: Equipped with an optional star diagonal, you can use this apo to observe the moon and planets with the highest possible contrast. The bright apochromat also allows long-term observation of difficult DeepSky objects: star clusters, galaxies and nebulae. Thanks to the crisp star image, the observation and resolution of globular clusters is a great pleasure.

For astrophotography, we recommend the field flattener and focal length reducer Flat6AIII from William Optics. The optics also provide a flat field with the same focus position for full-format cameras. Using the prism rail mount integrated in the handle, you can equip your Gran Turismo with a guiding scope that can serve as a finder or guide scope.

The squat 2.5 "R&P focuser has a long focusing path, a reduction and a temperature display. The scope of delivery also includes an adapter for 1.25" eyepieces.

The very robust Gran Turismo Apo is really very well suited for travel and generally for mobile astronomy and astrophotography. Take the apo with you under a dark sky and discover the best objects from the Messier and NGC catalogs. The telescope is uncomplicated, stable in adjustment and after the firstlight your new favorite telescope!

Another special feature of the new William Optics apochromat is the specially calculated focus mask according to Bahtinov:

These new focus masks made of optical acrylic glass offer 92% light transmission.

The embossed pattern ensures a diffraction structure that is about three times lighter than that of classic metal masks. The mask made of acrylic glass thus shows a clearer diffraction image and allows focusing even with the help of weaker stars.