About this product
Model: wo_a-f153gt-rd
Part Number: A-F153GTRD-RP37
The all new William Optics GT153 is a triplet APO refractor telescope.
The high quality FPL53 triplet air-spaced objective lens and premium anti-reflection coatings provides superb resolution and contrast.
The FPL53 ED glass together with long focal length (f7.8 focal-ratio) also ensure very high colour correction so negligible chromatic aberration. .
When used the optional Flattener-8 (0.72x Reducer/Flattener) the GT153 becomes a fast F5.6 astrograph suitable for use with full-frame cameras.
When used for visual astronomy the views are astounding!
Simply Beautiful Finish
- CNC machined out of solid high-grade aluminium. No plastic parts.
- Powder-painted white CNC-machined aluminum tube with retractable dewshield.
- Anodized 360 degree rotatable FT focuser.
- Bahtinov cap (patented).
- Precise and robust CNC machined lens cell.
- CNC-machined mounting rings with carry handle & guiding rings.
- Triple testing each lens by Zygo test ensures highest optical quality
Includes mounting rings, guiding rings, large Losmandy type dovetail, CNC handle, Bahtinov cap & 3” Rotolock adapter.
FEATURES
- Features a premium triplet air-spaced objective.
- High resolution, high contrast and excellent colour correction.
- Precision optics with STM coatings
- Designed by a leading designer with FPL-53 ED glass
- 360 deg. rotatable focuser
- Large aluminium focus knobs
- Focal Ratio F7.8
- Focal Ratio with Full Frame 0.72x Reducer/Flattener F5.6
- Focal Length 1193mm/859mm with 0.72x Reducer/Flattener
- Graduated scale for precise camera alignment
- Optical Tube Weight with Mounting Rings 13.5kg
- Length with Dew Shield Retracted 1100mm
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