NightSky 100 mm Bahtinov Mask

  • NightSky 100mm Bahtinov Mask for Telescopes – All Metal Construction
  • The Bahtinov Mask manufactured from Metal, not plastic and possesses whole anodizing aluminium procedure.
  • 3 x Screw kit

More details

40110014
New product

$ 18

This product is no longer in stock

Add to compare

 
Product description

    How to use it?

      1.Place the Bahtinov Focus-Mask over the end of your telescope, then locate a bright star near your target, take a 3-5 second picture and view the diffraction spikes.

      2. Change your focus, take another picture and again, view your diffraction spikes. Is the center spike moving further from center?

      3. Then change the direction your focusing and try another picture. Watch the direction the spikes are moving and when the center spike passes the middle of the other two spikes, change direction and fine tune your tuning knobs until the center spike is in the middle. Your now in perfect focus.

 
Specification
Card Code8001510937

18 other products in the same category:

Compare 0

No products

To be determined Shipping
$ 0 Total

Check out