Light Pollution Filters

 CLS Filters

These filters are suitable for photography from areas polluted by artificial light with cameras that are also sensitive in the infrared. The contrast of all deep sky objects is increased.

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Altair Astro Premium 1.25" CLS-CCD Filter features:
  • Multi-Layer Anti-Reflection coating to reduce star-halos and reflections from camera optical window.
  • Batch-tested for consistency.
  • Ultra-flat glass by Schott Germany. 1.85mm Glass 30sec parallel, optical polish to MIL Spec. MIL-O-13830.
  • High quality dichroic/dielectric coatings. Electron-beam gun evaporation with Ion-assisted deposition coating technology for durability and resistance to scratching, as well as stability on CWL (central wavelength). No deviation affected by temperature change.
  • UV/IR block for imaging - star bloat reduction with refractors.
  • Precision CNC machined filter cell for strain-free mounting and freedom from tilt.
79.00 € 71.10 €
Estimated delivery time : 2-4 weeks
 
 
Reduces the effects of light pollution and natural moon or skyglow
129.00 € 116.10 €
Estimated delivery time : 2-4 weeks
 
 
Improves the visibility of stars and deep sky objects, by blocking light pollution
139.00 € 125.00 €
Estimated delivery time : 2-4 weeks
 
 
Improves the visibility of stars and deep sky objects, by blocking light pollution
279.00 € 251.00 €
Estimated delivery time : 1-2 weeks
 
 
Astronomik CLS filter with infrared blocking for contrasty observing and photography at light polluted sky.
229.00 € 206.00 €
Estimated delivery time : 1-4 days
 
 
Astronomik CLS filter for contrasty observing and photography at light polluted sky.
79.00 € 71.10 €
Estimated delivery time : 1-4 days
 
 
1.25" CLS Nebula Filter by Explore Scientific.
58.00 € 52.20 €
Estimated delivery time : 1-4 days
 
 
155.00 € 140.00 €
Estimated delivery time : 1-4 days
 
 
The L-eXtreme is a two-band filter and the ideal choice for strong light pollution suppression. It allows astrophotography of objects with narrow-band emission in the O-III and H-alpha lines out of the city.
239.00 €
Estimated delivery time : 3-4 days
 
 
The L-eNhance is a tri band filter and the ideal choice for enhanced light pollution suppression. It allows astrophotos to be taken of narroband emission objects in O-III, H-Beta and H-Alpha lines out of the city.
209.00 €
Estimated delivery time : 3-4 days
 
 
The L-Pro Filter is the best choice for light pollution suppression and allows astrophotos to be taken of broadband emission objects such as galaxies, reflection nebulae and globular star clusters.
169.00 €
Estimated delivery time : 3-4 days
 
 
The L-eNhance is a tri band filter and the ideal choice for enhanced light pollution suppression. It allows astrophotos to be taken of narroband emission objects in O-III, H-Beta and H-Alpha lines out of the city.
229.00 €
Estimated delivery time : 3-4 days