Télescope Newtonien 200/800
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dESCRIPTION:
This Newtonian reflector is optimized by fast focal ratio of f / 4 for astrophotography and widefield observation.
The large-sized secondary mirror and the quality Okularauszug guarantee optimum illumination of the visual field in photography and also in monitoring. In the design of the reflector value was placed on high stability and rigidity.
The benefits at a glance:
The reflector is optimized for a very good illumination. The diameter of the front bezel is generously sized, so that the tube does not shade itself. Also, the secondary mirror guarantees an image free from disturbing shading, even when using large format camera Senoren.
Optics |
|
Type | Reflector |
Type of build | Newton |
Aperture (mm) | 200 |
Focal length (mm) | 800 |
Aperture ratio | 4 |
Resolving capacity | 0,58 |
Limit value (mag) | 13,3 |
Light gathering capacity | 820 |
Max. useful magnification | 400 |
Tube length (mm) | 730 |
tube diameter (mm) | 230 |
Tube material | Steel |
Reflector |
|
Secondary mirror diameter (mm) | 70 |
Primary mirror - Material | BK7 |
Ventilation for central mirror | yes |
reflectivity | 94 |
Secondary mirror obstruction | 35 |
Eyepiece holder |
|
Type of build | Crayford |
Connection ( to eyepiece) | 2 |
Gear reduction | 1:10 Fine movement |
Mount |
|
Mounting type | no mount |
GoTo control | no |
Type of build | OTA |
Tracking | no |
Included accessories |
|
Finder scope | 8x50 |
Tube clamps | yes |
Eyepiece adaptor | 1,25" & 2" |
Miscellaneous | Extension tube |
Prism rail | without |
General |
|
Total weight (kg) | 8,7 |
Area of application |
|
Moon & Planets | yes |
Nebulae & galaxies | yes |
Nature observation | no |
Astrophotography | yes |
Sun | not recommended (Only with appropriate Sun filter) |
recommended for |
|
Beginners | yes |
Advanced | no |
Experienced amateurs | no |