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Antlia ALP-T Dual Band 5nm Ha&OIII Filter

Product Descriptions
Size 2'' Mounted Price US$380
Brand Antlia Origin China
Filter detail Ha&OIII

Antlia ALP-T Dual Band 5nm Ha&OIII Filter


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 and astronomical OSC cameras. It can also be used as a narrowband filter for monochrome cameras to save imaging time. The advanced multi-coatings on Antlia 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-alpha

Oxygen III

FWHM

5nm

5nm

CWL (Central Wavelength)

656.3nm

500.7nm

Peak Transmission

92%

88%

Blocking

OD4.5 @ 300-1100nm

Filter Thickness

2mm+/-0.05mm

Sizes and MAP Prices

Size

Minimum Advertised Pricing (MAP)

Mounted: 2’’

US$380.00 for both standard and highspeed version

US$690.00 for one set of Ha&OIII and SII&Hb dualband 5nm filter

Unmounted: Dia36mm

US$298.00 (1 X B-4836 adapter is included)

for both standard and highspeed versios

Other sizes

Availability is to be confirmed


It is advised to use with Antlia ALP-T Dual Band 5nm SII&Hb filter.



Spectrum Curve:

2023 ALP-T 5nm Ha&OIII Spectrum Curve.jpg

Filter Ring:

2’’ (M48*0.75)

Ultra-thin filter cell to minimize vignetting by maximize possible clear aperture

Black Anodized Finish

Laser Engraving No Fading


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 +.jpg

Target: 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+.jpg

Target: 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+.jpg

Target: 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+.jpg

Target: 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+.jpg

Target: Aldebaran(Magnitude0.85)
- 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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