TI35 – The top notch compact Astrograph
The TI 35 (350 mm of clear aperture) is based on the same Modified Harmer Wynne optical configuration as the TI45 f/4 system. We are proud to have realized a very compact, light-weight, high-end performance astrograph in super fast f/3.5 (1230 mm of focal length) and in all-around f/5.0 (1750 mm of focal length).
The TI 35 with its 740 mm long, 430 mm over-all diameter and less than 20 kg weight, is the most performing transportable astrograph in the market.
Like our TI 45, it uses a further refractive element correction (in ED glass) – in order to reach a real diffraction limited corrected field of over 60 mm in diameter without introduce color aberrations (from 400 nm to 1,2 micron of wavelength). These performances of very fast and very corrected optics allows to this optics to be used with success both in narrow band filter imaging and in Near Infrared imaging.
Fused Silica (Quartz) primary mirror is
available as option (see Price List). Fused Silica (Quartz) performs an awesome thermal expansion coefficient of 5.4 x 10-7/℃ , 6 time less than borosilicate glasses.
Lightweight Quartz primary mirror is available as option (see Price List). Near-to-zero CTE material + lightweight shape = best solution
THE MOST IMPORTANT FEATURES:
- Effective optical aperture: 350 mm
- Focal length 1230 mm – f/3.5 or 1750 mm – f/5.0
- Awesome optical performances for both configurations
- Extreme stiffnes and thermal stability (thanks to extensive use of carbon fiber)
- Extreme lightness (thanks to extensive use of carbon fiber)
- Easy collimation
- Compact dimensions
- Built in secondary mirror electronic Focuser (ASCOM Alpaca compatible)
- Built in electronic control boards
- WI-FI Telescope Control Software
- Extreme modern Italian design
- Automated dust cover (option) (ASCOM Alpaca compatible)
- TI110 Field Rotator (option) (ASCOM Alpaca compatible)
TI 35 f/3.5
Aperture: 350 mm
Focal length: 1230 mm – f/3.5
The most transportable in its class
TI 35 f/5.0
Aperture: 350 mm
Focal length: 1750 mm – f/5.0
The most transportable in its class
| TI35 Astrograph Technical Data | TI35 3,5 | TI35 5,0 |
|---|---|---|
| Overall Dimension (mm) | 750x430x430 | 870x430x430 |
| Weight (kg) | 19 | 20 |
| Focal Length (mm) | 1230 | 1750 |
| Optical Configuration | Modified Harmer-Wynne | |
| Parabolic Primary mirror | ||
| Diameter (mm) | 360 | |
| Effective Optical Aperture (mm) | 350 | |
| f/ | 3,51 | 5,00 |
| Material | Borosilicate glass | |
| Coating | Alum. Enanced >94% | |
| Secondary Mirror | ||
| Diameter (mm) | 190 | 174 |
| Material (mm) | Borosilicate glass | |
| Coating | Alum. Enanced >94% | Alum. Enanced >94% |
| Corrector | ||
| Type | 3-Lenses ED | 3-Lenses ED |
| Corrector Lens Diameter (mm) | 116 | 116 |
| Coating | Multy layers 400-900 nm | |
| Real Diffraction Limited field diameter (mm) (considering Polychromatic 400/700 nm) | 62 | 87 |
| Effective Obstruction (of the secondary baffle) (%) | 56.0 | 52.0 |
| Light incoming (% of aperture area) | 68.4 | 72.6 |
| Back Focus from rear flange (mm) | 125 | 130 |
| Loss of light (vignetting) @ 26 mm from axis (%) | 6.0 | 2.3 |
| Loss of light (vignetting) @ 30 mm from axis (%) | 9.0 | 7.0 |
| Spot Diagram RMS Diameter @ 26 mm from axis - Poly 400-700 nm (micron) | 2.29 | 3.27 |
| Spot Diagram RMS Diameter @ 30 mm from axis - Poly 400-700 nm (micron) | 3.90 | 3.53 |
