Telescope-Refracting Telescopes-Apertura 90 mm Triplet Refractor with Field Flattener, Hard Case, and Guidescope

Unparalleled Triplet Optical Design
Featuring a three-element optical design, the objective is fully multi-coated and made of FPL-53 apochromatic glass, providing exceptional color correction. Compared to a doublet refractor, the additional lens of this 90 mm refractor provides even sharper, higher-contrast images and even better color correction both visually and photographically. Internally, the three air-spaced lenses are housed in a knife-edge baffled tube which further prevents stray light. Keeping with this theme, you will also find knife-edge baffles in the draw tube and focuser.

Included Field Flattener with 2″ Filter Holder and Full-Frame Sensor Support

32 mm Guidescope
A perfect complement to your astronomy or astrophotography setup, this 32 mm guide scope from Apertura makes targeting a breeze! This 32 mm guide scope has a focal length of 121.05 mm and an f/3.78 focal ratio. Focus is achieved through an integrated, precise helical focuser: simply twist the knurled lock ring. Camera attachment can be achieved through twist-locking 1.25″ dual radial compression rings. This guide scope is compatible with standard and mini form factor cameras. For the mini form factor, attachment can be achieved with the use of a 1.25″ nose piece extension that is included with most cameras.

360° Rotator
A built-in rotator attached to the focuser allows for the adjustment of any accessory, whether visual or photographic. With a camera or diagonal attached, simply loosen the thumb screw and rotate to the desired orientation. This is incredibly helpful when framing multiple targets throughout an evening of imaging or when adjusting for more comfortable angles for visual observation.

Large, Dual-Speed, Precision 2.5″ Focuser
This 90 mm triplet features a large, 2.5″ rack-and-pinion focuser able to handle some of the heaviest astrophotography equipment and accommodates 2″ or 1.25″ visual accessories (with the included adapters, see below). The focuser features 10:1 reduction for fine-tuned focusing. Attached to the focuser is a finder base for mounting a small finder scope or guide scope (sold separately). In addition, this focuser features internal, knife-edge baffles for enhanced optical performance.

Manufactured with Precision and Designed with Attention to Detail
The Apertura 90 mm triplet boasts a high-performance optical system beneath its elegant facade. In support of its rugged functionality, Apertura’s 90 mm apochromatic refractor comes with many useful accessories. In addition to those already mentioned above, this includes a 7″ Apertura D-style dovetail bar, heavy-duty adapters to use 2″ and 1.25″ accessories, and Electric Blue tube rings with vibrant, brushed metal knobs. These complement the Electric Blue accents of the focuser, dew shield/lens shade, and color-matched, slotted carrying handle. Finally, an aluminum, padded hard case is included for safe storage of your new premium, 90 mm refractor.

Comes with the Apertura Absolute Warranty
The Apertura Absolute Warranty provides two years of coverage against product defects. After the initial two-year warranty expires, this product qualifies for Apertura’s Three-Year Accident Replacement Program. In addition, the Apertura Absolute Warranty is transferrable! Download a copy of the Apertura Absolute Warranty for more information on this program, how to make a claim, and why it is important to keep your original receipt and the product’s original boxes and packaging!