Telescopes

The 4" corrector and reducer is designed for the large 180mm f/7 Triplet APO and allows astrophotography with full frame cameras at the highest level.

• Improves the focal ratio from f/7 to f/5.6 and reduces the focal length of the apo to 1008 mm
• Full illumination and correction up to full frame
• Working distance is 55 mm from the M48 connection thread
• The corrector is screwed to the focuser of the apo

• This finder is right angled for more comfort, with a corrected field (i.e. not mirror-reversed like other finders), so objects actually match their orientation in your star chart.
• The focuser can also be rotated 360° and locked in seconds (requiring some re-alignment afterwards). The 10mm larger objective and a little extra power compare to 8x50 finders, yet has almost the same size and weight.
• The included quick-release finder base has 4x 4mm slotted holes in the base allowing you to fit it to most telescopes on the market. (The mini-dovetail wedge on the bracket will fit any GSO or Skywatcher telescope directly in fact but we suggest you use the included base if it fits the tube, because it has 2x clamping screws, for better alignment).
• The CNC machined bracket is light yet rigid to keep alignment. Nylon tipped screws do not damage the durable high quality and moisture resistant powder coated aluminium tube.
• All objective lenses are anti-reflection coated and the tube and dewshield are internally blackened to increase contrast. The included illuminator has a variable setting, which illuminates the cross hairs in the eyepiece. The included eyepiece has a dark field illuminated cross-hair, so you can easily see it glowing faintly against the background sky, an upgrade for standard finders with dark cross-hairs.
• The high quality 1.25 FMC illuminated eyepiece has good eye relief for glasses-wearers, and a wide field of view. It has a side-port to screw in the included variable darkfield illuminated reticule, and the finder can be very easily focused, using the included helical focuser integrated with the prism diagonal.

Fast 60mm viewfinder with helical focuser and tube clamps

Key data

• 60mm aperture
• 225mm focal length at a focal ratio of f/3.75
• Illuminated crosshair eyepiece
• Helical focuser (the image does not rotate when focusing)
• Complete tube clamp set with mounting material
• Can also be used as a guidescope

• Refractor with Triplet Super ED optics
• 228mm aperture at 2050mm focal length
• resolving power of 0.5"
• with 220mm back focus ideal for CCD photography with filter wheel and other accessories
• powerful Feathertouch 3.5" drawtube
• versatile connection options via 3.5", 2", 1.25"
• weight 36 kg.