Compact, bright and made for your best photos
The William Optics AP 71/350 71 gives you a clear, flat and color-clean image from the first shot.It is small, light and ready for photography right away.You set your camera on it, focus quietly and you can start right away.Perfect for those who want to take sharp images without the hassle, both during the day and under the stars.
Fast lens for short exposures
The f/4.9 aperture lets in a lot of light, so you can shorter exposure and get less noise.Useful for nebulae, star fields and animals that move quickly.Your images remain clear and have nice details, even when the light gets weaker.
Flat image without additional flattener
The Petzval design uses four lenses that correct the image for you.You get a Flat field of view of more than 45 mm, Ideal for full-frame cameras, there is no need to buy or set up a separate corrector, which saves time and gives you consistent quality.
Focusing is easy
The helical focuser works smoothly and precisely.You turn the ring and the image slides quietly into focus, without shifting your camera.Even with a heavier camera, everything remains stable.The tilt adapter helps you straighten your sensor nicely, keeping corners sharp.
Fits almost any mount
The long prism bar can be used three ways:Arca-Swiss, Vixen or regular tripod screw.Useful if you often switch between photo tripod, star tracker or astronomical mount.You attach it quickly and without fuss.
Cleverly designed for real photographers
The built-in Bahtinov mask is neatly hidden in the dew cap.You snap it out, focus and slide it back in.The included carrying case makes it easy to take the telescope anywhere.You get a solidly built instrument with William Optics' well-known, beautiful finish.
For stars and nature
The AP 71/350 does a great job on large nebulae, star fields and deep-sky panoramas.But birds, animals and landscapes also get a clear, sharp image.You're basically buying one instrument that can do it all.
Specifications
Optics
| Feature | Description |
|---|---|
| Type | Refractor |
| Design | Apochromat |
| Aperture (mm) | 71 |
| Focal length (mm) | 350 |
| Focal Ratio (f/) | 4,9 |
| Resolution | 1,94″ |
| Limit value (mag) | 12,3 |
| Light output | 100 |
| Max. useful magnification | 142× |
| Tube weight (kg) | 2,8 |
| Tube length (mm) | 335 |
| Tube material | Aluminum |
| Coating | Multiple |
| Tube construction | Full tube |
| Dew cap diameter (mm) | 98 |
| Lens Design | Quadruplet |
Focuser
| Feature | Description |
|---|---|
| Tilt adapter | Yes |
| Design | Helical |
| Camera connection | M48 |
| Backfocus (mm) | 59 |
| Free opening (mm) | 45 |
| Rotatable | Yes |
Mount
| Feature | Description |
|---|---|
| Design | OTA |
| Type of mount | Without |
Included accessories
| Section | Description |
|---|---|
| Dew cap | Yes |
| Transport bag | Yes |
| Bahtinov mask | Yes |
| Dovetail | Arca-Swiss & Vixen-Style |
| Tripod screw | Yes |
| Corrector | Integrated |
General
| Feature | Description |
|---|---|
| Series | Cat |
| Color | Red |
| Observation goals | Astrophotography, Moon & Planets, Nature observation, Deep-sky |
| Sun | No (only with appropriate filters) |
| Recommended for | Advanced |
| Observatory use | No |
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