The new Sky-Watcher BKP 250 OTAW Dual Speed ••optical tube combines a powerful, excellent quality parabolic mirror and two additional improvements. First, the Crayford 2 "extractor was equipped with a 10: 1 microfluxer, but the tube was shortened to extend the main focus to allow for smooth focusing in astrophotography in the focus of the mirror.
Sky-Watcher BKP 250 OTAW Dual Speed ••is a complete optical system tube designed for both astrophotography and highly advanced visual observations, both solar system objects, as well as clusters, nebulae and galaxies.
The tube can be mounted on any strong astronomical assembly HEQ-5, EQ-6 or higher from any manufacturer (Sky-Watcher, Bresser / Messier, Meade, Celestron, Vixen et al.).
| • Optical system: || Newton's headlamp |
| • Mirror figure: || rotating paraboloid |
| • Diameter of the mirror: || 250 mm |
| • Focal length of the lens: || 1200 mm |
| • Lighted: || 1 / 4.8 |
| • Accuracy of the mirror's performance: || 1 / 8? |
| • Switching capacity: || 0.48 '' |
| • Theoretical range: || 14.1 magnitude |
| • Maximum useful magnification: || 500x |
| • Dimensions (diameter x length): || 288 x 1120 mm |
| • Weight: || 14.4 kg |
The set includes the following accessories:
• Crayford 2 '' / 1.25 '' focuser with micro-processor 10: 1
• 28 mm LE 2 "eyepiece
• 8x50 targetting scope
• tube clamp
• dovetail rail
This device focuses a lot of light. Looking directly at the sun through this device can result in partial or complete loss of vision. For the observation of the Sun, we recommend the safest method of spectacle projection, that is, projecting the image of the target of our day star on a piece of paper.
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