TS Optics Bahtinov Focusing Mask for 250–290 mm Outer Diameter | PixelSkiesAstro
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  • TS Optics Bahtinov Focusing Mask for 250–290 mm Outer Diameter | PixelSkiesAstro
  • TS Optics Bahtinov Focusing Mask for 250–290 mm Outer Diameter | PixelSkiesAstro

TS Optics Bahtinov Focusing Mask for 250–290 mm Outer Diameter

39,00 €
Tasse incluse

TS-Optics Bahtinov focusing mask — 250–285 mm outside diameter This Bahtinov mask fits telescope dew shields or camera lenses with an outside diameter from 250 to 285 mm. Select it by the physical attachment diameter, not the optical aperture.

Manufacturer model: TS-Optics Bahtinov focusing mask — 250–285 mm outside diameter · Specifications checked against manufacturer data on 2026-11-04

TS-Optics Bahtinov focusing mask — 250–285 mm outside diameter

This Bahtinov mask fits telescope dew shields or camera lenses with an outside diameter from 250 to 285 mm. Select it by the physical attachment diameter, not the optical aperture.

Focusing procedure

Fit the mask, point at a suitable star and view the diffraction pattern on the camera. Adjust focus until the central spike sits midway between the other two spikes, then remove the mask before recording the target.

Construction and fit

The black plastic mask is secured by three screws with protective covers. The manufacturer’s upper limit is 285 mm; fit at 286–290 mm is not specified, despite the existing store title.

TS-Optics manufacturer documentation

Compatibility notes

Manufacturer fitting range is 250–285 mm outside diameter. Store title says 250–290 mm and is unchanged; fit at 286–290 mm is not claimed.

56839

Scheda tecnica

Attacco
Three screws with protective plastic/rubber covers
Intervallo di diametro esterno (mm)
250–285
Articolo
Bahtinov Mask
Attrezzatura indicata dal produttore
TS Bahtinov Mask 3 screws covered in rubbery plastic for attachment
Codice produttore
TSBahtinov250
Materiale
Plastic
Modello
TS-Optics Bahtinov focusing mask — 250–285 mm outside diameter
Scopo
Camera focusing on a star using a diffraction pattern
Adatto a
Telescopes and lenses with 250-285 mm diameter

Riferimenti Specifici

MPN
TSBahtinov250
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