APO 140 f/7 Triplet Apochromat

More Views

Application Images

Images uploaded by Customers

No customer Image uploads yet. Add Your Review with Images
APO 140 f/7 Triplet Apochromat

# 1351000

€ 8,295.00 Price excl. German VAT tax (19%): € 6,970.59
  • Apochromatic Triplet Objective
  • with FPL-53 ED glass as a middle element
  • Clear aperture 5.5" (140mm), 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 - Why an oil-spaced triplet-lens?
  • 3.5" Feather Touch Focussierer of Starlight Instruments
Important note: This product is not available online. If you are interested, please send us a formal inquiry incl. contact data by email. We shall gladly provide a detailed offer.

Product Questions

No questions yet. Be the first to ask the question!
Description

Details

TEC APO 140 f/7 Tripelt Apochromat

TEC 140 APO ED

The TEC APO 140 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.
 
Korrigiert von 436- bis 1000 Nanometer. Optimiert für die e-Linie bei 546 nm
 
  • APO140 is an Aplanatic Oiled Triplet refractor with ED glass (FPL-53) as a middle element.
  • 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.
TEC 140 APO mit ölgefügtem Triplet-Objektiv
TEC 140 APO with oiled and fully sealed lens triplet!
TEC 140 APO ED Rohrschellen
CNC machined, black anodized aluminum, compact and lightweight design with stainless steel latches
TEC 140 APO ED Feather Touch Fokussierer
The Feather Touch 3545 was a collaborative design effort between Telescope Engineering and Starlight Instruments for TEC's line of fine refractors. It was designed to provide the user the with the best possible control while focusing using a 9:1 fine focus reduction assembly along with other features that make the use of the telescope simple and functional.

Specifactions

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.

Pictures taken with TEC APO 140 ED

Mond
Picture: R. Geissinger, Object: Moon
M42, M43
Picture: R. Geissinger, Object: M42, M43
NGC 281
Picture: R. Geissinger, Object: NGC 281
NGC 1396
Picture: R. Geissinger, Object: IC 1396, Accessories: Baader Filterset
IC 405
Picture: R. Geissinger, Object: IC 405, Accessories: Baader Filterset
IC 405
Picture: H. Heinicke, Object: Sun in H-alpha Light, Accessories: aader Telezentrik + SolarSpectrum H-alpha Filter
IC 405
Picture: H. Heinicke, Object: Moon + Venus

More pictures are available here: Homepage

Recommended 0.72x Telecompressor Corrector # 140 5371 of Astro Physics

 Reducer/Korrektor

This Reducer/Corrector reduces the focal length of the 140 ED from 980 mm to 700 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 3 x 2 degree at an image circle of 50 mm, diffraction limited and free of vignetting.

Related Articles
Specifications

Additional Information

Manufacturer TEC
Manufacturer SKU (#) 140 700
SKU (#) 1351000
Weight (kg) 11.6
Optical Design Apochromatic Refractor
Clear Aperture 5.5" (140mm)
Back Focus Distance 6.7" (170mm)
Focal Length 980 mm
Focal Ratio f/7
Optical tube length 34" (864 mm)
Image Scale 3.5 arcmin / mm
Photographic Resolution 0.8 arc sec
Linear Field of View (1000 m) 25.43 mm
Optical Tube Weight Copy 19lb (8,6 kg)
Tube diameter (max) 5.9" (150 mm)
Focuser Feather Touch 3545
Downloads
Reviews

You may also be interested in the following product(s)

Tell us what you think about this item!

Write A Review
    Please, wait...