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Filter ANTLIA L model 31mm circular filter without mount
ANTANL-31C
Stock at Supplier
82.60
VAT excluded
Shipping 5/7d
- Luminance filter to perfectly cut off UV-IR radiation
- Reduces halos on bright stars
- Average transmission rate greater than 95%.
- 31.75 mm (M28.5) threaded objective lens
Delivery Options
| Carrier | Description | Estimated Delivery | ||
|---|---|---|---|---|
 |
Home delivery - International | Home delivery - International |
Friday, 29 November - Friday, 6 December |
|
Home delivery - International
Home delivery - International
Estimated delivery:
Friday, 29 November - Friday, 6 December
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Everything you need to know about the Antlia Luminance filter
The "Luminance" layer is one of the most important elements in the success of an astrophotographic image. The goal is to obtain the maximum possible signal, using the most transmissive filter possible in the widest possible spectral bandwidth. In this way, sensitivity is maximized, as each photosite in the camera captures the photons in the best possible way.
With a bandwidth of over 95% on average between 440 and 690 nm, Antlia L filters deliver excellent results, with a sharp cut-off in the ultraviolet and infrared. Antlia has worked very hard to limit halos and spurious reflections.
Transmission curve of the Antlia Luminance filter (orange line). The wavelength in nanometers is on the abscissa axis. The transmission percentage is on the ordinate.
Technical specifications:
- Glass type: Schott optical glass
- Surface quality: 60/40 (according to MIL-O-13830)
- Mounting diameter 31mm circular without mount
- Substrate thickness 2mm
- Minimum 95% transmission from 440 to 690 nm
- Treatments polished on 2 sides with λ/4" accuracy
- Multilayer and anti-reflective treatments on 2 faces
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