Bresser N 305/1525 Dobson
Large, powerful and easy to use
The Bresser N 305/1525 Dobson is built for those who want to see big. With its huge 305 mm mirror, it captures nearly 2,000 times more light than the human eye. So you see deep nebulae, distant galaxies and fine details on the Moon as if you were there yourself.
Impressive optical power
The parabolic main mirror delivers razor-sharp images with lots of contrast. The large aperture ensures that you are not quickly at the limits of your telescope. Even for faint deep-sky objects, the image remains clear and vivid. The focal length of 1525 mm (f/5) gives a nice balance between magnification and brightness - perfect for the Moon and planets as well as nebulae and star clusters.
Smooth operation without fuss
The solid wooden Rockerbox makes operation intuitive. No complicated alignment or electronics - just point, track and enjoy. The large elevation rollers provide smooth movement so you can easily keep any object in focus, even at high magnifications.
Precision with the 2.5″ Hexafoc focuser
The Hexafoc Focuser of 2.5 inches offers exceptional stability and precision. The large 64 mm aperture allows you to use wide eyepieces without light loss or shadowing. You focus smoothly and precisely, keeping every detail razor-sharp.
Smart design and flexible use
The tube sits securely in adjustable clamping rings with large height wheels. So you can easily adjust the balance or rotate the tube for the best viewing position. And because it is Vixen-swallow-tail compatible, you can use it on an equatorial mount later.
Ready for sun and stars
With the telescope you get a objective solar filter, with which you can safely view sunspots. At night, use the same optics for Moon, planets or deep-sky objects - one instrument, endless possibilities.
What to expect
✓ Moon: sharp craters and mountains
✓ Planets: rich details, cloud bands and rings
✓ Deep-sky: clear image of nebulae and galaxies
✓ Ease of use: simple, fast, stable
✗ Astrophotography: not intended for long exposures
Specifications
Optics
| Feature | Description |
|---|---|
| Type | Reflector |
| Design | Newton |
| Aperture (mm) | 305 |
| Focal length (mm) | 1525 |
| Aperture ratio (f/) | 5 |
| Resolution (theoretical) | 0,45″ |
| Limit value (mag) | 14,2 |
| Light output | 1900× |
| Max. useful magnification | 610× |
| Tube construction | Full tube |
| Tube material | Glass fiber reinforced plastic (GRP) |
| Tube diameter (mm) | 342 |
| Tube weight (kg) | 18,9 |
Reflector
| Feature | Description |
|---|---|
| Main mirror | Parabolic, PZ33 glass |
| Capture mirror diameter (mm) | 72 |
| Catch mirror obstruction | 24% |
| Main mirror ventilation | Yes |
| Mirror cell supports | 9 |
Focuser
| Feature | Description |
|---|---|
| Design | Hexafoc 2.5″ |
| Free opening (mm) | 64 |
| Ocular connection | 2″ / 1,25″ |
| Reduction | Without (fine adjustment optional) |
| Motorized | No |
Mount
| Feature | Description |
|---|---|
| Design | Dobson |
| Type of mount | Manual |
| GoTo steering | No |
| Weight (kg) | 15 |
Tripod
| Feature | Description |
|---|---|
| Material | Wood |
| Type | Rockerbox |
| Accessory holder | Yes |
Included accessories
| Section | Description |
|---|---|
| Ocular | 25 mm (1.25″) |
| Seeker | 6×30 |
| Adapter | 1,25″ & 2″ |
| Extensions | Yes |
| Accessory shoe | Hybrid |
| Solar filter | Yes |
| Battery compartment | Yes |
General
| Feature | Description |
|---|---|
| Series | Messier |
| Total weight (kg) | 31 |
| Shipping weight (kg) | 38,8 |
| Eyepiece height (zenith) | 1600 mm |
| Application | Moon, Planets, Deep-sky, Sun (with filter) |
| Recommended for | Beginners & Advanced |
| Astrophotography | No |
| Observatory use | No |
Dutch
English
Reviews
There are no reviews yet.