Baader UFC S70/5 Extension 5mm with S70 Dovetail/Dovetail-Clamp w/screws - 2459141

Baader PlanetariumSKU: 2459141

Sale price$51 CAD
In stock: 2 unit(s) - Most orders placed by 2PM EST will be shipped out the same day (weekdays)


  • Baader UFC S70/5 Extension 5mm
  • Telescope-sided with S70 dovetail clamp (screws included)
  • Camera-sided with S70 dovetail
  • Can be adapted via the S70 dovetail to the UFC filter base #2459110 and allows adaption of telescope-sided adapters with the S70 dovetail clamp

Adaptations to a HyperStar must be made with a tolerance of better than +/- 0.3mm, otherwise the image quality will decrease rapidly. Please see the picture on the right, which shows the respective back focus.

Example: A Celestron C11 has a back focus of 59.7 mm plus a shift of approx. 0.66 mm of the focus point to the extra focal when using 2 mm thick filters such as e.g. are common in 2 "M48. As a rule of thumb: a third filter thickness gives the offset in the direction of the extrafocal. From this rounded 60.7 mm, the back focus of the camera is then subtracted. The remaining optical length is adjusted by the UFC together with adapters. If there are any uncertainties It is best to order which HyperStar and camera you want to use when ordering.


Manufacturer Baader Planetarium
SKU (#) 2459141
Optical length (mm) 5
Inner Diameter / Clear Aperture (mm) 65 mm
Outer Diameter 79,8 mm
Inner Connection (lens sided) Dovetail ring clamp, S70
Outer Connection (eyepiece/-camera-sided) Dovetail ring, S70
Type of Adapter Extension

Additional Resources

You may also like

Recently viewed