The FRA600 comes fitted with a large 4.2" rack and pinion focuser and includes the standard 1:10 micro-adjustment knob, the focuser lift the payload to a pro level, offers smoothly operation when heavy imaging equipment and accessories are attached, without slipping, becomes a performance upgrade.
The focuser allows multiple connection thread. Askar offers a standard conical extension tube with M54x0.75 and M48x0.85 thread to connect various photography equipments.
Mechanically, the FRA600 has a tube diameter of 120mm and a retractable dew-shield. With the dew-shield retracted, the total length is only 493mm, making it a great portable 4" astrograph.
A set of multifunctional red anodized tube rings that include mounting points on three sides, makes it easy to attach accessories such as guider scope for backyard viewing.
In addition to supporting wide field astrophotography, the FRA600 is also perfect for high quality observation, provides complete lack of chromatic aberration and create images with impressive contrast of realistic visual experience.
If the FRA600 is just a triplet APO refractor, then the price is reasonable, but the FRA600 is a 4.3" Quintuplet Super APO FRA600 Astrograph, its build and finish are unprecedented for an astrograph in this price range, moreover, the FRA600 offers cost-effective superb performance, is a pleasure to use.
- Aperture: 108mm / 4.25"
- Focal length: 600mm
- Focal ratio: f/5.6
- Objective type: Quintuplet flat-field Apo (including 2 ED elements)
- Image circle: 66mm
- Back focus: 160mm (from the end of rotator M90x1 thread)
- Overall length: 493mm
- Tube weight: 6.5 kg / 14.3 lbs
- Back-end adapter: M108x1 male thread (no rotator), M90x1 male thread, 2" adapter, 1.25" adapter
- Conical adapter: M90x1 to M54x0.75, M54x0.75 to M48x0.75
- Accessories: a pair of tube rings, handle, dovetail plate, conical tube adapter (with M54x0.75 and M48x0.75 male threads, checklist, and manual), and hard case
- 0.7x f/3.9 reducer sold separately
In the Box
- Askar FRA600
- A pair of tube rings,
- Losmandy dovetail plate
- Conical Extender
Warranty & Manuals