ASKAR FMA135 F/4.5 TRIPLET APO LENS
Askar
Apochromatic triplet
0.24 kg
ASKAR FMA135 F/4.5 TRIPLET APO LENS is backordered and will ship as soon as it is back in stock.
The Askar FMA135 F/4.5 is an extremely compact and lightweight triplet apochromatic refractor with one ED (extra-low dispersion) lens. The FMA135, when combined with the built-in three element flattener, is a very capable super wide-field astrograph with minimal chromatic aberration and distortion across an APS-C frame. As well as its superb imaging capability, it can be configured as a visual telescope, finder or guide scope.
Features
- Can be used as either a visual telescope or a highly corrected 135mm f/4.5 astrograph.
- Compact and exceptionally light, at 113mm long and 240 grams.
- Includes all adapters necessary for use as a photographic, visual, finderscope and guidescope.
- 1.25" (M28.5 x 0.6) female thread at the front of the telescope for mounting standard 1.25" filters.
- Comes with mounting ring with finderscope dovetail base.
- Extremely portable and versatile construction, ideal for grab and go astrophotography with a star tracker.
- Highly precise helical focuser.
Specifications
Optical design |
Air-spaced apochromatic sextuplet with one ED element |
Objective diameter |
30 mm |
Focal length |
135 mm |
Focal ratio |
f/4.5 |
Mount attachment |
Vixen-style finder base |
Focuser |
Helical focuser |
Camera connection |
M42 x 0.75, 1.25" adapter |
Backfocus |
55 mm |
Weight |
240 g (without lens covers) |
Length |
113 mm |
SKU |
AS-135 |
Items included
- FMA135 telescope
- 1.25" visual extension
- Tube ring with finder base and adjustment screws
- Manual
Gallery
Crescent nebula widefield by Karsten Feyler | Askar FMA135, Touptek ATR 2600C Pro.
Single 3 minute shot, Askar FMA135, Sony A7R4.