Helix Nebula by APO Team
The Triplet Ortho-Apochromat concept of the TOA refractors makes it possible to combine sharpness and extraordinary contrast. This unique optical formula, based on a highly air-spaced ED triplet, has the advantage of completely eliminating spherical aberration while having the best chromatic correction in the Takahashi telescopes range. TOA excels in both high planetary resolution and deep sky imaging, fully exploiting the capabilities of cameras with the largest sensors.
The TOA-150B is equipped with an oversized 102 mm (4") rack-and-pinion focuser (with 1/7 microfocuser), a CAA (Camera Angle Adjuster) ring for photographic framing, an FQR-1 base for 7x50 finder scope and a retractable dew shield. It can be combined with the TOA-35 RD 0.7x field flattener but also the 67 FL super-corrector offering an incredible 92 mm image circle.
The TOA-150B is the flagship of the Takahashi refractors. It is resolutely turned towards imaging. It supports, without mechanical constraints, the heaviest photo setups including large sensor CCD cameras.
| Characteristic | Takahashi TOA-150B refractor |
| Optical design | ED Triplet Ortho Apochromat |
| Lens cell | Highly air-spaced triplet. 3 lenses/3 groups. 2 x S-FPL53 ED lenses |
| Coatings | Hard multicoatings |
| Diameter | 150 mm |
| At prime focus | |
| Focal length | 1100 mm |
| Focal ratio | F/7.3 |
| Metal back distance | 275 mm |
| With TOA-35FL field corrector | |
| Focal length | 1080 mm |
| Focal ratio | F/7.2 |
| Image circle diameter | 40 mm |
| Metal back distance | 117.5 mm |
| With 67FL field corrector | |
| Focal length | 1090 mm |
| Focal ratio | F/7.3 |
| Image circle diameter | 90 mm |
| Metal back distance | 106.2 mm |
| With TOA-35RD focal reducer | |
| Focal length | 775 mm |
| Focal ratio | F/5.2 |
| Image circle diameter | 44 mm |
| Metal back distance | 62.5 mm |
| With EX ED1.5X focal extender | |
| Focal length | 1650 mm |
| Focal ratio | F/11 |
| Image circle diameter | 44 mm |
| Metal back distance | 117.5 mm |
| Characteristic | Takahashi TOA-150B refractor |
| Length of the optical tube | 1270 mm (1110 mm with retracted dew shield) |
| Diameter of the optical tube | 179 mm |
| Diameter of the dew shield | 206 mm |
| Weight | 15.2 kg |
| Focuser | 4'' (112 mm) Rack-and-pinion with microfocuser 1/7 |
Spot-diagram of Takahashi TOA-150B refractor at prime focus
Spot-diagram of Takahashi TOA-150B refractor with TOA-35FL field corrector
Spot-diagram of Takahashi TOA-150B refractor with 67FL field corrector
Spot-diagram of Takahashi TOA-150B refractor with TOA-35RD focal reducer
| System-chart of Takahashi TOA-150B refractor | Télécharger |
| System-chart of Takahashi TOA-150B refractor with 67FL field corrector | Télécharger |
| System-chart of Takahashi TOA-150B refractor with TOA-35RD focal reducer | Télécharger |
| System-chart of Takahashi TOA-150B refractor with EX ED1.5X focal extender | Télécharger |
| Instruction manual of Takahashi TOA-150B refractor | Télécharger |
gallery
Helix Nebula by APO Team
Horsehead Nebula by APO Team
The Large Magellanic Cloud by APO Team
NGC6188 & NGC6164 by APO Team
