Antlia Quad-band Anti-Light Pollution Filter - 2" Mounted

Antlia Quad-band Anti-Light Pollution Filter - 2" Mounted

แบ่งปันสิ้นค้าชิ้นนี้

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คะแนนสินค้า
SKU
AN-QUAD200
ผู้ผลิต
จำนวนในสต๊อก
สินค้าหมด
น้ำหนัก
50.00 g
ราคาของเรา
฿6,990.00

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Antlia Quad-band Anti-Light Pollution Filter - 2" Mounted

The Antlia Quad Band Anti-Light Pollution Filter is a light suppression filter for color and monochrome cameras. It is able to shoot most deep sky objects like galaxies, reflection nebulae, emission nebula, and star clusters from a Bortle 8 location to Bortle 1 as its spectral transmission passes through visible light region, near-ultraviolet (NUV) and near-infrared (NIR) region.

Antlia Quad Band filter has a broad bandpass designed to cope with faster optics up to the f/2 focal ratio.

Antlia Quad band anti light pollution filter packaging 2-inch

Considering the high quantum efficiency (QE) characteristics of the latest cameras in the near-infrared region and this region is less susceptible to artificial light pollution, the Antlia Quad Band Light-Pollution Filter adds high transmission in the near-infrared (NIR) band. This spectrum design improves image signal-to-noise ratio and contrast by capturing signals in visible bands and NIR region, while also maintaining good color balance and being easier to manage in post-processing. 

Certain full-spectrum objects like M51, M83 possess significant signal in the near-infrared (NIR) region, you can possibly capture these deep sky objects more contrasted with the Antlia Quad Band filter under light polluted condition. 

When using this filter with a camera that has UV/IR cut protective glass, the visible band transmission signal is retained, but the IR cut limits your ability to capture targets with infrared signal. 

Therefore, the Antlia Quad Band filter is more suitable for cameras with AR protective glass as they can capture both NIR and visible band signals.

 

Features:

  • Anti-Light Pollution
  • The Antlia Quad Band filter is an effective solution for reducing light pollution, as it cuts out most of the orange-yellow lights from 589nm and part of blue lights from LEDs
  • Possible to shoot over 95% of deep sky objects
  • Unique spectral design offers more possibilities for astrophotography
  • High transmittance of the main emission lines Ha/SII/OIII/H-Beta in the visible region, enhances the astrophotography's high SNR and contrast;
  • Near-infrared (NIR) region transmittance
  • Passing near infrared region is for shooting deep sky objects that cannot be shot with other filters without NIR transmission
  • The broad bandpass designed to cope with faster optics up to the f/2 focal ratio.
  • Good color balance
  • It is easier to achieve color balance by adding the short-wavelength transmission
  • Superior optical reliability reduces post image processing
  • Basic Substrate: Optical, Single / Non-glued substrate
  • Surface Quality: S/D (scratch/dig)= 60/40 (Refer to MIL-O-13830)
  • Transmitted Wavefront: Lambda/4 or better.
  • Parallelism: less than 30 arcsec
  • Warranty: 3-years against delamination

 

Technical Specifications:

Antlia Quad band anti light pollution filter Spectrum Specs

 

 

Antlia_quad_band_filter_spectrum_curve

 

Filter Ring:

  • 2’’ Mounted (M48*0.75 thread)
  • Ultra-thin filter cell to minimize vignetting by maximizing possible clear aperture
  • Black Anodized Finish
  • Laser Engraving, No Fading

 

Not Recommended:

  • Solar Observing and imaging
  • Night visual observation

Not Permitted:

  • DO NOT LOOK AT THE SUN WITH ANTLIA FILTERS. Serious eye damage will result if you fail to observe the warning.
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This finder scope is so easy to set up and use that it relegates my Telrad finder scope into second place, what a lovely piece of kit, I'm really impressed. Thank you ThaiExcite for the excellent service. Jim Mc.
James McMahon
Oct 13, 2014

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