TEC APO 140ED (f/7)
Product.Nr.:
BP#1351000
Manufacturer: TEC
7.750,00 EUR
incl. 19 % VAT
-
Nicht auf Lager
products condition NewCondition
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product description
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- Apochromatic Triplet Objective
- With FPL-53 ED glass as a middle element
- Clear aperture 5.5" (140 mm), focal length 980 mm
- The color correction is optimized for visual use with focus shift less than 0.02% from 436nm to 1000nm
- Durable oil spaced lens
- 3.5" Feather Touch Focussierer of Starlight Instruments
The TEC APO 140 Tripelt Apochromat has a 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
- Oiled and fully sealed lens triplet, for fastest thermal adaptation and minimum of haze and reflections
- Retractable baffle
- Light tube assembly
- FeatherTouch 360° rotatable focuser with coarse and fine focusing
- Collet type eyepice holder
- Line of accessories, including: Precision tube rings with adjustable latches, Dovetail plate (same width and fit as Losmandy plates), Finder bracket with new principle of finder adjustment, Choice of two kind of cases
- The color correction is optimized for visual use with focus shift less than 0.02% from 436nm to 1000nm. Calculated Strehl for e-line (546nm) is 0.99
- Intereferometry of the first run lenses showed that the average Strehl is close to calculated with a very smooth wave front and RMS less than 1/50. air-spaced objectives. The outside surfaces of front and rear lenses are coated with 7 layers of antireflective coating, that reduce light reflection to the average 0.25% in range of 400-700nm.
| Clear aperture | 5.5" / 140 mm |
| Focal length | 980 mm |
| Focal ratio | 7.0 |
| Image scale | 3.5 arc min/mm |
| Resolution (theoretical) | 0.8 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" / 170 mm |
| Focuser load capacity | 10 lb |
| Tube assembly diameter | 5.9" / 150 mm |
| Baffle dia. | 7" / 178 mm |
| TA length (shortest) | 34" / 864 mm |
| Balance point position | 14" ± 1" (350 mm ± 25 mm) from the focuser flange |
| OTA weight | 19 lb / 8.6 kg / (for tube rings - add 2 lb) |
| Lens coatings: | Broad band 7 layers antireflection coating (BBAR) |
| Includes : | Optical tube assembly, front cover, plug. |
Scope of Delivery
- TEC 140 ED (OTU)
- 3,5" Feather Touch Focuser with Dual Speed Focuser 1:9
- NOT Included: Tripod, ZEISS Mount, Counterweights, Dovetail plate, Tube rings, Turret, Eyepieces, Findercope
Reviews
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