ASKAR V MODULAR APO REFRACTOR
Askar
Apochromatic modular triplet
60 mm, 80 mm
f/6
270 - 600 mm
2.8 kg
ASKAR V MODULAR APO REFRACTOR is backordered and will ship as soon as it is back in stock.
- Info
- Specifications
- Instructions
- Included items
- Reviews
The Askar V is a modular apochromatic triplet refractor system featuring interchangeable 60mm & 80mm objectives and three different correctors. Both 60mm & 80mm objective lenses include two elements of ED glass, which effectively controls chromatic aberration. A 1x flattener, 0.75x reducer and 1.2x extender give you a total of six different optical configurations.
To keep things simple, each configuration has the same backfocus requirement of 55mm, making it easy to swap between setups without changing the imaging train. Each corrector includes both M54 and M48 adapters with built-in 2" filter threads to suit a wide range of cameras.
The Askar V includes a newly-designed 360 degree rotator with scale, multifunctional handle with finder-style dovetail groove, standard finder base and 1.25 & 2" visual backs.
When paired with the V Flattener, the focal length remains the standard 360mm and focal ratio f/6 with the 60mm objective, or 495mm and f/6.18 with the 80mm objective.
With the V Reducer, the focal length becomes 270mm and f/4.5 with the 60mm objective, or 384mm and f/4.8 with the 80mm objective.
With the V Extender, the focal length becomes 446mm and f/7.43 with the 60mm objective, or 600mm and f/7.5 with the 80mm objective.
V60 mode specifications
| Objective lens | Apochromatic triplet air-spaced with two ED glass elements |
|---|---|
| Objective diameter | 60 mm |
| Focal length | 360 mm |
| Focal ratio | f/6 |
| Distance from 2" adapter to focal plane with focuser racked in | 150 mm |
| Tube length (without accessories) | 318.5 mm |
| Tube weight (without accessories | 2.8 kg |
| Rear adapters | 2", 1.25" |
V80 mode specifications
| Objective lens | Apochromatic triplet air-spaced with two ED glass elements |
|---|---|
| Objective diameter | 80 mm |
| Focal length | 500 mm |
| Focal ratio | f/6.25 |
| Distance from 2" adapter to focal plane with focuser racked in | 139.7 mm |
| Tube length (without accessories) | 479 mm (411 mm with dew shield retracted) |
| Tube weight (without accessories | 3.4 kg |
| Rear adapters | 2", 1.25" |
Corrector specifications
| 60 mm with reducer | 270 mm @ f/4.5 |
|---|---|
| 60 mm with flattener | 360 mm @ f/6 |
| 60 mm with extender | 446 mm @ f/7.43 |
| 80 mm with reducer | 384 mm @ f/4.8 |
| 80 mm with flattener | 495 mm @ f/6.18 |
| 80 mm with extender | 600 mm @ f/7.5 |
| Reducer weight | 0.44 kg |
| Flattener weight | 0.48 kg |
| Extender weight | 0.46 kg |
| Rear adapters | M54 x 0.75, M48 x 0.75 (with 2" filter thread) |
| Backfocus | 55 mm from M48 adapter |
1. Askar V 60mm objective
2. Askar V 80mm objective
3. Retractable lens hood
4. Reducer
5. Flattener
6. Extender
7. Finder base
8. 360 degree rotator
9. 1.25" / 2" visual adapter
10. Fine focus knob cap
11. Focuser
12. Tube ring clamshell
13. 300mm Vixen style dovetail bar
14. Multifunctional handle
