Moon & Skyglow Filter 2"

Item Details
Moon & Skyglow Filter 2"

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Moon & Skyglow Filter 2"

 

The Moon & Skyglow filter is designed to darken the background sky by blocking light transmission from skyglow (589nm) and many street light emissions from artificial light. Its high efficiency preserves image brightness, reveals more details and increases contrast of moon, galaxies, nebulae and globular star clusters.

it is aquite versatile filter for visual observation and astrophotography on planetary nebula

Format

This filter is sized to fit 2" eyepieces.

Price/ea:
$79.00

Spectral Curve

  • Schott substrate material
  • Thickness 2.0mm
  • Surface Quality: 60/40 (Refer to MIL-O-13830)
  • Fine-optically polished to ensure accurate 1/4 wavefront and <30 seconds parallelism over the both surfaces
  • Infrared wavelength 700-1100nm cut-off

Coating Parameter

  • Multi-layers anti-reflection coating
  • Non-cementing optical substrate coating
  • 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
  • Planetary rotation system offers precision and homogeneity of coatings ensuring high value on transmission of pass-band and Optical density of off-band

Filter Cell

  • Ultra-thin filter cell minimize vignetting by maximize possible clear aperture. Clear aperture is 45mm
  • Aerometal Material | Precise CNC Machining | Sand Blasting Process | Black Anodized Finish | Extinction Treatment to Prevent Reflection | Laser Engraving No Fading

This item is normally shipped by Courier.

Item #:
F-MSG2
Manufacturer:
Optolong
Status:
In Stock