The Antlia ALP-T dual band 5nm filter is a dual line-pass filter which was designed to be used primarily with one-shot color (OSC) cameras such as DSLR's or astronomical OSC cameras. It can also be used as a narrowband filter for monochrome cameras to save imaging time. The advanced multi-coatings on the ALP-T ultra dual band filter effectively isolates the red Ha and the blue-green OIII lines light from emission nebulae, with almost total suppression of optical density (OD) 4.5 on unwanted wavelengths from light pollution, moonlight, and airglow. The result is that our ALP-T dual band 5nm filter creates a superior signal-to-noise ratio and better contrast in your images. The filter enables the capture of the two main emission nebulae bands at the same time, whilst suppressing unwanted light pollution. It enables you to capture cleaner data and reduces the post processing efforts to isolate faint details from the ackground light pollution.
Application and Performance:
- Engineered specifically for use with DSLR, CMOS, and CCD color cameras
- Suppression of optical density (OD)4.5 on unwanted visual wavelengths offers very good signal-to-noise ratio
- Extremely steep bandpass edges minimize internal reflections
- Ideal flat-top and moderate bandpass reducing spectrum down shifts
- Ion Gun Assisted Deposition coating technology on the double-sided polished substrate making it the most consistent and accurate light pollution suppression filter
- Good performance at focal ratios faster than F3.0 with contrast increasing as focal ratio increases
- Designed to suppress artificial lighting from Bortle scale 1 to Bortle scale 8
- Near IR (NIR) is blocked up to 1100nm
Filter Cell (specifications for cell mounted filters only):
- 2” (M48*0.75)
- Ultra-thin filter cell to minimize vignetting by maximizing possible clear aperture
- Black Anodized Finish
- Non-Fading Laser Engraving
Available Sizes：
- Mounted： 2” (2mm thickness)
- Unmounted：Dia 36mm (2mm thickness)
Not Recommended:
- Solar Observing and imaging
- Visual observation
IMPORTANT! DO NOT LOOK AT THE SUN WITH ANTLIA FILTERS.
Serious eye damage will result if you fail to observe the warning.
At The Widescreen Centre, we prioritize prompt order processing and dispatch. We strive to dispatch all orders on the same day or the next working day, depending on the time of your order. We hold extensive stocks to ensure that your items are ready for immediate despatch. Please note that the cut-off time for same-day dispatch is usually 1:30 p.m.
For delivery within Mainland UK, we use reputable couriers to provide efficient service. You can expect your package to arrive in 1-2 working days. Please note that a signature may be required upon delivery to ensure a secure receipt.
In the case of special order items, the delivery time may be longer. If you have any concerns or questions about the delivery of your item, please don't hesitate to Contact Us. We are here to assist you.
Should there be any delay in dispatching your order, we will notify you to keep you informed.
Please be aware that The Widescreen Centre cannot be held responsible for any postal or third-party delays that may occur. We are committed to providing a reliable and efficient delivery service for our valued customers.
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