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Astronomy > Filters > Nebulae filters > Broadband Filters > Optolong > Optolong Filters L-Pro Filter 77mm
Product no.: 73946

Filters L-Pro Filter 77mm

RRP: $ 380.00 Our price:
$ 304.00 incl. VAT, plus shipping costs
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Express shipment possible for delivery tomorrow, 22.11.2024!

Delivery possible before Christmas (European destinations) - when you order by 18.12.!
Right of return up to January 31 2025!


Product description

Optolong Filter

This filter is for improving the contrast of deep-sky objects and dampening the sky background. This is achieved through a complex transmission characteristic which lets the lines of deep-sky objects pass but suppresses many sources of light pollution. Additionally, the unwanted sky background, caused by oxygen emissions in the atmosphere ("skyglow"), is reduced. This filter comes to use especially in light-polluted areas and can be used visually as well as photographically.

Unlike other filters which should attenuate light pollution, like UHC or CLS filters, this filter is a multi bandpass filter which has only minimal impact on the color rendition, so this filter is also suitable for photographing continuum sources like galaxies, globular clusters and reflection nebulae.

  • blocks UV and IR (700 - 1100 nm)
  • high transmission at passband
  • only minimal impact on the color rendition
  • high optical quality

Specifications

Capacity


Connector (at camera end)
77mm
Frame
lens filters
Mount material
Aluminium
Coating of optical system
multiple (plane-parallel)

General


Type of build
Broadband Filters
Material
Glass
Type
Filters

Area of application


Useful for photographs
yes
Galaxies and star clusters
yes
Anti light-pollution
yes
Nebulae & galaxies
yes
Planetary nebulae
yes
Supernova remains
yes
Visually useful
no
Hydrogen nebulae
yes
AllSky, Meteore
no
Daylight and twilight observation
-
Optolong Filters L-Pro Filter 77mm
Optolong Filters L-Pro Filter 77mm
Optolong Filters L-Pro Filter 77mm

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