Tri-Bahtinovmaske for Celestron 5" Schmidt Cassegrain

Tri-Bahtinovmaske for Celestron 5" Schmidt Cassegrain

The Bahtinov mask is named after the inventor Pavel Bahtinov. This focussing aid enables clear focusing of astro images in the focus of your telescope or with a camera lens.

  • Place the mask on the telescope and point it at a bright star.
  • Switch on the camera and observe the constellation on Live View or on the computer. 
  • f the image is not exactly sharp, the centre line is shifted. Adjust the focuser until the central line runs exactly through the centre of the star. 
  • You have now achieved optimum sharpness. Remove the mask from the telescope again and you can start exposing the image.
Manufacturer : Astroprints
SKU : TriBaht-C5
Price: 21.17 € incl tax 19% (Germany)
24.90 €
Estimated delivery time : 3-4 days
Product description
The Bahtinov mask is named after the inventor Pavel Bahtinov. This focussing aid enables clear focusing of astro images in the focus of your telescope or with a camera lens.

  • Place the mask on the telescope and point it at a bright star.
  • Switch on the camera and observe the constellation on Live View or on the computer. 
  • f the image is not exactly sharp, the centre line is shifted. Adjust the focuser until the central line runs exactly through the centre of the star. 
  • You have now achieved optimum sharpness. Remove the mask from the telescope again and you can start exposing the image.

Practical tips from APM Telescopes
  • Focusing with a Bahtinov mask is suitable for deep sky photography at the focus of the telescope or with a camera lens. Correctors, Barlow lenses can be used.
  • Use a star of medium brightness for focussing, it should not be too bright but also not too dark. The reflex lines must be clearly recognisable.
  • The star should not be exactly in the centre, as the field of view of the corrected telescope or objective is often not 100% flat. Take a star in the outer third of the field. This will give you a better averaged sharpness for the entire image.

Simple attachment by clipping on
Simple and precise focussing of all cameras such as DSLR, CCD or astro cameras possible.

Scope of Delivery:
  • Bahtinov Mask


Products specifications
Temperature rangemax 80°
MaterialPETG with UV resistance
suitable forC6