1/1
filters

ALP (Anti-Light Pollution) Filter - 2" Round Mounted [F-ALP]

Antares   ——   SKU: F-ALP
$199.00 CAD
Add to cart
Product Info
Features
Shipping

 

About the Antares ALP (Anti-Light Pollution) Filter - 2" Round Mounted...

Light pollution filters, also called nebular filters, are a must when viewing faint objects near city lights. These filters, like the Antares ALP/Nebula Filter selectively block the major spectral emission lines of both sodium and mercury vapor lamps which are the main two types of urban illumination. These broadband filters also blocks the natural oxygen line at 557.7nM, while allowing transmission of most of the spectral lines of emission nebula.

 

 

Antares ALP (Anti-Light Pollution) Filter - 2" Round Mounted Features...

 

  • Selectively block the major spectral emission lines of both sodium and mercury vapor lamps which are the main two types of urban illumination

     

     

  • Also blocks the natural oxygen line at 557.7nM, while allowing transmission of most of the spectral lines of emission nebula

     

     

  • Light pollution filters, also called nebular filters, are a must when viewing faint objects near city lights

     

     

  • Improves contrast and reduces effects of "air glow"

     

     

  • Dramatically increases the contrast between nebulae and background sky

 

 

Antares ALP (Anti-Light Pollution) Filter - 2" Round Mounted Specifications...

Filter Type: Light Pollution Reduction / Nebula

Format: Round Mounted

Size: 2"

Threaded: Yes

Coatings: Multi-coated

Antares Optical Product Number: F-ALP