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  • TI 55 Astrograph
    the best Astrograph for your observatory

TI 55: THE BEST ASTROGRAPH FOR YOUR OBSERVATORY


The TI 55 Astrograph range include four models to match every needs of modern research. 

  • TI 55 f/2,6 – 1445 mm of focal length for extremely fast optics. It is based on a direct PRIME focus parabolic primary mirror with a 6.5″ Wynne corrector with 82 mm of back-focus. It offers highest productivity per night, great advantage for super-nova search, surveys, asteroids, and other fields of modern astronomy.
  • TI 55 f/3,5 – 1925 mm of focal length for very wide corrected field and very fast optics. A killer for astroimaging setup.
  • TI 55 f/4,9 – 2700 mm of focal length suitable for general use while maintaining an excellent focal ratio that allows reduced exposure times with respect traditional RC and CDK system.
  • TI 55 f/6,5 – 3575 mm of focal length for deeper sky objects when excellent seeing condition allows the maximum resolution

The TI 55 f/3,5 and f/4,9 are based on a Modified Harmer-Wynne optical configuration.

The TI 55 f/6,5 is based on a Corrected Cassegrain optical configuration

Each TI55 model use a special designed and FEM optimized lightweighted QUARTZ mirrors. Both primary and secondary mirror are made using fine Quartz material that perform near to zero CTE.

Our FEM optimized lightweighted mirrors allows for TI55 models a glass weight saving of about 16 kg. It brings high advantage both in terms of thermalization time and in terms of holding structure masses. All this lets less deformation on structures and on mirrors itself and less weight and moment of inertia on your mount.

Lightweight Mirror Benefit

TI 55

Aperture: 550 mm

Focal length:  1445 mm – f/2,6

The fastest in its class

Optical Performances

TI 55

Aperture: 550 mm

Focal length:  1925 mm – f/3,5

The optimal astrograph

Optical Performances

TI 55

Aperture: 550 mm

Focal Length: 2700 mm  – f/4,9

All-around Astrograph

Optical Performances

TI 55

Aperture: 550 mm

Focal length:  3575 mm – f/6,5

The deepsky Astrograph

Optical Performances

TI 55 THE MOST IMPORTANT FEATURES:

  • Effective optical aperture: 550 mm – Awesome optical performances for each model
  • High-End Lightweight QUARTZ mirrors
  • Extreme lightness – it allow a OTA weight around 65 kg that permits a 80 kg class commercial mount to be used
  • Extreme stiffness and thermal stability (thanks to extensive use of carbon fiber and carbon fiber sandwich)
  • Easy collimation
  • Built in integrated secondary mirror (Wynne corrector for WPF model)  high precision electronic focuser (ASCOM Alpaca compatible)
  • Built in integrated 4″ electronic field rotator (ASCOM Alpaca compatible) – NOT avaliable for TI55 WPF 2.6
  • Automated dust cover (ASCOM Alpaca compatible)
  • Built in electronic control boards and proprietary software for a full WI-FI control of the telescope
  • Extreme modern Italian design
TI 55 ASTROGRAPH TECHNICAL DATATI 55 WPF 2.6TI55 3.5TI55 4.9TI55 6.5
Overall Dimensions (mm)1530 x 750 x 7501100 x 750 x 7501280 x 750 x 7501300 x 750 x 750
Weight (kg)65646564
Focal length (mm)1445192527003575
Optical Configuration164 mm Wynne Corrector Prime FocusModified Harmer-WynneModified Harmer-WynneCorrected Cassegrain
Parabolic Primary Mirror
Diameter (mm)560
Thickness (mm)78
Effective optical aperture (mm)550
MaterialHigh-End Lightweight Quartz
CoatingAlum. Enanced >94%
Secondary Mirror
Diameter (mm)-294270224
Thickness (mm)-373532
Shape-SphericSphericHyperbolic
Material-High-End Lightweight Quartz
Coating-Alum. Enanced >94%
Corrector
Type3-Lenses ED3-Lenses ED3-Lenses ED2-Lenses
Corrector lens diameter (mm)164140146110
CoatingMulty layers 400-900 nm
Real Diffraction Limited field diameter (mm) (considering Polychromatic 400/700 nm)5970>10068
Effective Obstruction (of the secondary baffle) (%)37,3%55,3%50,9%42,2%
Light incoming (% of aperture area)86,0%69,0%73,8%82,0%
Back Focus from rear flange (mm)82155175190
Loss of light (vignetting) @ 26 mm from axis (%)5,0%3,6%1,2%2,1%
Loss of light (vignetting) @ 30 mm from axis (%)10,0%6,0%4,0%3,3%
Spot Diagram RMS Diameter @ 26 mm from axis - Poly 400-700 nm (micron)3,662,272,173,81
Spot Diagram RMS Diameter @ 30 mm from axis - Poly 400-700 nm (micron)3,942,902,345,42

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  • LIGHTWEIGHT MIRROR
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  • Terms & Conditions

Telescopi Italiani

NOTHING WILL BE SEEN AS BEFORE

Email: info@italiantelescopes.net

Telescopi Italiani s.r.l.

Registred Office:

Via Boezio 16 – 00165 Roma – Italy

 

Operational Headquarter:

Via Trento e Trieste 39 – 56042 Crespina (PI) – Italy Phone: +39 342 8012938

 

Japan Correspondence Office:

304 Sanwa Plaza 1-14 27, Ninomiya-cho Chuo-ku, Kobe, Hyogo, JAPAN. Phone: +81 80-3786-3618

____________________

P.IVA 12695391008  SDI: SUBM70N

 

Product Series

  • TI 35 ASTROGRAPH
  • TI 45 ASTROGRAPH
  • TI 55 ASTROGRAPH
  • TI 65 ASTROGRAPH
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