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Often classic Crayford focusers are suitable for visual use but not for photo applications. In fact, during the long exposures required by astrophotography, this type of focuser can cause camera slippage moving the sensor out of focus. Our 50,8mm Hybrid-Drive focuser for Newton, adds under the focuser tube a rack and pinion thereby maintaining in position even heavy cameras (load capacity up to 8 Kg). Below the focuser there's also a locking screw: closing it, you will be sure that your camera will not move any more!
The 50.8mm Hybrid-Drive focuser presents the connection for 50.8mm and 31.8mm accessories (comes with a handy 31.8mm reducer). It also features a convenient 1:11 fine focus gear, particularly useful when you need to focus at high magnification (for example when taking pictures ot the Moon and planets).
The focuser has a very low profile and 20mm travel: thanks to integrated extension, you can extrach the focuser of 50mm more. In this way you get 70mm total focus travel, perfect for both visual (for example eyepieces, with extension in outer position) and photographic use (for example cameras, with extension in inner position).
|Diameter||50,8mm with 31,8mm adapter|
|Micrometric focus knob||Yes|
|Loading up to (Kg)||8|
|Travel (mm)||20 + 50|
|Thickness when closed (mm)||50|
Prodotto solido, ben curato esteticamente. Movimento di messa a fuoco fluido. Comoda la precisione della manopola micrometrica. La prolunga permette di andare a fuoco con l'uso della Barlow.
Tempi di consegna rapidi, mi ritengo pienamente soddisfatto.