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Primaluce Lab 2" / 50.8mm Hybrid-Drive Focuser for Newtonian Telescopes

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in In stock (2)
Model
PLL-FHDN50
Weight
1.10 kg
Our price:
£190.30
including VAT 20.00 % ( £31.72 )
Qty

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 extract the focuser by an additional 50mm. 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).

Specifications

  • Thickness when closed: 50mm
  • Optical travel: 20mm + 50mm
  • Payload capacity: 8kg
  • Dual speed (microfocusing): yes
  • Compatibility: 2" / 50.8mm with 1.25"/31.8mm adapter
  • Copper compression ring: yes (on 2" holder), (no need for compression ring on the 1.25" holder due to its construction)
  • Distance between holes on the short side (this is parallel with the tube): 54mm
  • Distance between holes opposite each other with the short sides (perpendicular to the tube): appr. 91-92mm if measured directly or appr 93mm if curvature of tube is taken into account

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