William Optics 75-110mm Bahtinov Mask

 69,00

William Optics Bahtinov focusmasker voor buisdiameters van 75-110 mm: optisch acrylglas met 92% transmissie en extra helder buigingspatroon voor exact scherpstellen.

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William Optics 75-110mm Bahtinov Mask
William Optics 75-110mm Bahtinov Mask
 69,00

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William Optics 75-110mm Bahtinov Mask: scherpstellen zonder gokken

The William Optics Bahtinov mask makes focusing on a star measurable. You place the mask in front of your telescope's aperture and point it at a bright star: the pattern will draw three spikes of light in your image. If the middle spike is exactly between the other two, the focus is perfect. No more guesswork, even with a camera.

Dit masker is gesneden uit optisch acrylglas met 92% lichttransmissie en het patroon geeft ongeveer drie keer zoveel buiging als klassieke metalen maskers: de spiesen zijn helderder en dus ook op zwakkere sterren bruikbaar. Deze maat past op kleine refractors zoals de ZenithStar 61 en 73.

Features

  • Past op buisdiameters van 75-110 mm dankzij verstelbare bevestigingspennen
  • Optical acrylic glass with 92% light transmission
  • About three times brighter diffraction pattern than metal masks
  • Indispensable for sharp astrophotos, also visually useful

Compatibility

Meet de buitendiameter van je buis of dauwkap: die moet tussen 75-110 mm liggen. Voor andere maten zijn er de overige uitvoeringen in de serie.

Specifications

TypeBahtinov focus mask
Tube diameter75-110 mm
MaterialOptical acrylic glass, transparent
Light transmission92%
AttachmentAdjustable pens

You can find more accessories for this merk at the William Optics merk Page.

Additional information

Use Type

Astronomy

Observation goals

Astrophotography

Lens diameter (mm)

≥56 mm

Suitable for f-ratio

Universal

Weight

Lightweight (0 - 5 kg)

Weight class

< 400 g

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