William Optics Flat GT - Flattener for GranTurismo Refractors
The William Optics Flat GT keeps your stars sharp to the edge of the image. It corrects the curvature of the field of view so that stars are not stretched or distorted. This is especially important with fast refractors (f/5-f/7) and large cameras.
You easily mount the flattener between your telescope and camera. For best results, place the camera about 55 mm from the back of the flattener. This keeps your image sharp, clear and well exposed across the entire field.
The Flat GT is suitable for the WO GranTurismo 71 & 81. It has an M63 telescope connector and M48 camera connector. Its compact 22 mm length keeps your setup light and stable. With two lenses in one group, you get an evenly corrected field of view of 44 mm, ideal for astrophotography.
With the Flat GT you will see your stars as real points, your shots will be accurate and professional without additional adapters or extensions.
Specifications
Capacity
| Feature | Description |
|---|---|
| Suitable for telescopes | WW Gran Turismo 71 & 81 |
| Connection on camera side | M48 x 0.75 |
| Telescope connection | M63x1 male |
| Backfocus (mm) | 56.6 mm (GT71) / 55 mm (GT81) |
| Corrected field of view (mm) | 44 |
| Number of lenses | 2 |
| Number of groups | 1 |
General
| Feature | Description |
|---|---|
| Type | Flatteners, Correctors, Reducers |
| Design | Flattener |
| Weight (g) | 180 |
| Length (mm) | 22 |
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