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Antlia ALP-T Dual Band 5nm Ha&OIII Filter&B4836 - 36mm Unmounted

Product Descriptions
Size 36mm Unmounted Price US$298
Brand Antlia Origin China
Filter detail Ha&OIII

The Antlia ALP-T dual band 5nm Ha&OIII 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 our 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 background 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 wavelengths adds signal-to-noise

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

Designed to suppress artificial lighting from Bortle scale 1 to Bortle scale 8

Near IR (NIR) is blocked up to 1100nm


Technical Specifications:



Hydrogen-alphaOxygen III
FWHM5nm5nm
CWL (Central Wavelength)656.3nm500.7nm
Peak Transmission90%82%
BlockingOD4.5 @ 300-1100nm
Filter Thickness2mm+/-0.05mm


Filter Ring:

No.

Filter holder B4836 is used for converting   2'' to unmounted 36mm, an additional accessories.


Spectrum Curve:

Antlia ALP-T Dualband 5nm spectrum curve.jpg


Not Recommended:

Solar imaging

Night visual observation


Not Permitted:

DO NOT LOOK AT THE SUN WITH THIS FILTER

Serious eye damage will result if you fail to observe the warning


Additional independent tests and reviews are available here, please credit the photographer's names if you use their images on your website.

IC434_ALP_T+.jpgTarget: IC434 – Horse Head and Flame Nebulae

- Telescope: Skywatcher 130mm F5 w/MPCC

- Mount: Losmandy G11

- Camera : IMX571 26000KPA

- Filter: Antlia ALP-T Dual Band 5nm Filter 2''

- Exposure info: 300s X 24

- Bortle scale 5

Copyright: Hyunsu Lee(South Korea)


NGC2244_LIGHT_3+.jpgTarget: NGC2244 – Rosette Nebula

- Telescope: Skywatcher 130mm F5 w/MPCC

- Mount: Losmandy G11

- Camera: IMX571 26000KPA

- Filter: Antlia ALP-T Dual Band 5nm Filter 2''

- Exposure info: 300s X 30

- Bortle scale 5

Copyright: Hyunsu Lee(South Korea)


NGC 6960_Western Veil nebula+.jpgTarget: Western Veil nebula

- Telescope: Skywatcher 130mm F5 w/MPCC

- Mount: Losmandy G11

- Camera: IMX571 26000KPA

- Filter: Antlia ALP-T Dual Band 5nm Filter 2''

- Exposure info: 300s X 7

- Bortle scale 5

Copyright: Hyunsu Lee(South Korea)


IC63_LIGHT+.jpgTarget: IC63 - The Phantom of Cassiopeia

- Telescope: Skywatcher 130mm F5 w/MPCC

- Mount: Losmandy G11

- Camera : IMX571 26000KPA

- Filter: Antlia ALP-T Dual Band 5nm Filter 2"

- Exposure info: 300s X 32

- Bortle scale 5

Copyright: Hyunsu Lee(South Korea)


betelgeuse+.jpgTarget: Betelgeuse(Magnitude:0.5)

- Telescope: Skywatcher 130mm F5 w/MPCC

- Mount: Losmandy G11

- Camera: IMX571 26000KPA

- Filter: Antlia ALP-T Dual Band 5nm Filter 2”

Copyright: Hyunsu Lee(South Korea)




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