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Details
TEC APO 160 f/7 Fluorit Apochromat
APO160FL - is the next step in size after APO140ED, keep in mind there is quite a difference in price here for the improvements in color correction. This scope by style is a scaled version of the APO14O, but of different optical design, is slightly longer and heavier, and may require a larger mount. APO160FL has excellent color correction thanks to glass combined with Fluorite as a middle element
The advantages of Fluriot to ED glass: less adsorption or rather more transmission
APO 160 FL Apochromat vs. APO 140 EDThe APO 160 has number of features that in a given combination are rarely found in one scope:
- Precision apochromatic objective with modern coating that makes lenses almost invisible
- Retractable Dew Shield
- Light weight tube assembly
- FeatherTouch 360° rotatable focuser with coarse and fine focusing
- Collet type eyepiece holder
Pictures taken with TEC APO 160 FL
Specifications
Clear aperture 6.3" / 160 mm Focal length 1120 mm Focal ratio 7.0 Image scale 3.1 arc min/mm Field curvature 420mm Resolution (theoretical) 0.75 arc sec Focuser Feather Touch 3545 Eyepiece holder 2" Collet type Focusing range 4.5" / 114 mm One turn focus travel Coarse 21.5 mm / Fine 2.3 mm Back focus distance 6.7" / 180 mm Focuser load capacity 10 lb Tube assembly diameter 5.9" / 163 mm Dew shield dia. 8" / 202 mm TA length (shortest) 39.4" / 1000 mm OTA weight 24 lb / 11 kg Lens coatings: Broad band 5 layers antireflection coating (BBAR) Recommended 0.72x Telecompressor Corrector # 140 5372 of Astro Physics
This Reducer/Corrector reduces the focal length of the 160 FL from 1.120 mm to 800 mm and gives you a focal ratio of f/5. For a full frame camera (24 x 36 mm), this results in a field of view of 1.7 x 2.6 degree at an image circle of 50 mm, diffraction limited and free of vignetting.
Related Articles
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Apochromatic Triplet Objective: Why oil-spaced lenses?
Why an oil-spaced triplet-lens? The first successful experiments with oil-spaced triplet-lenses were probably done by Wolfgang Busch from Ahrensburg, who had several discussions about this with Carl Zeiss Jena, back in the days of the German Democratic Republic. Even then, this technique was far superior to the standard technics like air-spaced or cemented lenses. But it was hard to keep the joining medium inside of the lens, because of insufficient synthetic oils and many other reasons. Because of this, the lens could freeze or dry out. It took Zeiss more than ten years of research to solve these difficulties and present the first APQ-lens. Besides Zeiss, only Astro-Physics and TEC were able to produce long-lasting oil-spaced lenses. It takes some tricks and knowledge to keep the oil (if the fluid can still be called oil) inside of the lens – at least over a long period of time with always-changing temperatures. But with the necessary craftsmanship and patience, it can be done. Nevertheless, many people still think – wrongly – that an oil-spacing is especially prone to aging. This is surely true if you didn't master the technology, but we want to present a list of the pros and cons...
Additional Information
| General | |
|---|---|
| Manufacturer | TEC |
| SKU (#) | 1351010 |
| EAN Code | 4047825018953 |
| Optics | |
| Optical Design | Apochromatic Refractor |
| Aperture (mm) | 160mm (6.3") |
| Focal Length | 1120 mm |
| Focal Ratio | f/7 |
| Backfocus | 6.7" (180mm) |
| Tube diameter (max) | 6.42" (163 mm) |
| Image Scale | 3.1 arcmin / mm |
| Length of tube | 1000 mm |
| Optical length (mm) | 39.4" (1000 mm) |
| Optical Tube Weight | 24lb (12 kg) |
| Mount | |
| Included Items | |
| Focuser | Feather Touch 3545 |
Product Information
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