Celestron Variable Polarizing Filter 1.25" (31.8 mm) – Brightness Control for Telescopes
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Vai al moduloCelestron Variable Polarizing Filter 1.25" – Precise Brightness Modulation
The Celestron 94107 variable polarizing filter is the ideal accessory for anyone who wants precise control over the brightness of celestial objects without altering their colour. Unlike fixed lunar filters or neutral density filters, this filter provides continuous, stepless adjustment of light absorption between 1% and 40%: simply rotate the lower ring and the image brightens or dims in real time.
Why choose a variable polarizing filter?
The Moon is the object that benefits most from this filter: by reducing the brightness, details of craters, ridges and valleys become far more pronounced and defined. But its usefulness goes well beyond lunar observation:
- Daytime planets: darkens the blue sky background to bring out Venus, Jupiter and other planets even during the day
- Smartphone astrophotography: reduces overexposure and improves contrast in lunar and planetary photos
- Bright objects: any intense light source (close double stars, disk planets) benefits from modular light reduction
- Stackable: combines with colour or neutral density filters thanks to threads on both sides
Compatibility and fitting
The filter screws directly onto the standard 1.25" (31.8 mm) thread of any compatible Celestron eyepiece. Thanks to the double thread, it can be stacked with other filters in the same range, further expanding observation customisation options.
Technical specifications
| Model | Celestron 94107 |
| Diameter | 31.8 mm (1.25") |
| Housing | Aluminium cell |
| Light absorption | Variable, 1% to 40% |
| Colour alteration | None |
| Stackable | Yes, double thread for use with other filters |
| Compatibility | 1.25" Celestron eyepieces and equivalent standard eyepieces |
One accessory, countless situations
Whether you are observing a full Moon, bright planets or want to improve your smartphone astro photos, the Celestron 94107 variable polarizing filter gives you the control that a fixed filter simply cannot. Compact, sturdy, with an aluminium cell and intuitive adjustment: an accessory that goes into your telescope bag and never leaves it.