Telescopi Italiani TI35 f/3.5 Modified Harmer Wynne Astrograph
Starting Price: $33,225.00
Price as Configured: $33,225.00
Price as Configured: $33,225.00
Brand: Telescopi Italiani / SKU: TI-35
The Telescopi Italiani® TI35 f/3.5 packs 350mm of diffraction-limited aperture into a carbon fiber astrograph weighing just 51 lbs (23 kg) — one of the most capable transportable imaging instruments in its class. Deep Space Products is the exclusive U.S. dealer for Telescopi Italiani, and we're proud to be their first dealer worldwide. Questions about the TI35 or how it fits your imaging system? Contact us — we help customers match astrographs to mounts, cameras, and imaging goals.
Shipping costs can be estimated at the time the order is placed, but will not be finalized until the order is ready to ship.
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TI35 f/3.5 — Specifications
| CMS Field Name | Value |
|---|---|
| Brand | Telescopi Italiani |
| Optical Design | Modified Harmer Wynne |
| Clear Aperture | 350mm (13.8") |
| Focal Length | 1,230mm |
| Focal Ratio | f/3.5 |
| Corrector | 116mm, 3-element ED glass |
| Central Obstruction | 56% by diameter |
| Diffraction Limited Field | 62mm diameter |
| Spot Diagram RMS (26mm off-axis) | 2.29 µm (polychromatic 400–700nm) |
| Spot Diagram RMS (30mm off-axis) | 3.90 µm (polychromatic 400–700nm) |
| Vignetting (26mm off-axis) | 6.0% |
| Vignetting (30mm off-axis) | 9.0% |
| Spectral Correction Range | 400nm – 1,200nm |
| Back Focus (from rear flange) | 125mm |
| Mirror Material (standard) | Quartz, aluminum enhanced coating |
| Mirror Material (optional upgrade) | Fused silica (quartz) lightweight — near-zero CTE |
| Primary Mirror | Aspheric |
| Secondary Mirror | Spherical |
| Tube/Structure Material | Full carbon fiber truss + carbon fiber sandwich structural body |
| Collimation System | Proprietary X-Y secondary mirror collimation |
| Focuser | Built-in electronic secondary mirror focuser (ASCOM Alpaca) |
| Thermal Control | Full automated thermal control system |
| Connectivity | WiFi + Ethernet |
| Software Compatibility | ASCOM Alpaca |
| OTA Length | 720mm (28.3") |
| OTA Diameter | 446mm (17.6") |
| OTA Weight | 23 kg (51 lbs) |
| Optional: Field Rotator | TI110 (ASCOM Alpaca compatible) |
| Optional: Automated Dust Cover | ASCOM Alpaca compatible |
| Optional: Dovetail System | TI-112 quick-release dovetail for OTA balancing |
| Country of Manufacture | Italy |
