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Astronomy > Filters > Planetary & Comet Filters > Baader > Baader Filters 500nm 1.25"
Product no.: 10867

Filters 500nm 1.25"

$ 59.00 incl. VAT plus shipping costs
short-term
ready for shipping in 1-2 weeks + lead time
Compare the article with this offer: Omegon Filters Color filter green 1.25''

Product description

Baader colour filters are carefully manufactured for amateur astronomical use. The glass is finely polished to be plane-parallel. These filters far exceed the quality of the usual "roughly polished" (= hot-blazed) colour glass filters.

Thanks to their fine optical polish, these filters can be used at any point in the beam path – well in front of the focal point – (e.g. in front of a binocular attachment!) without causing optical errors (astigmatism) or otherwise impairing the image in any way!

Further special features of Baader filters:

  • Elaborate frame with the largest possible free opening to prevent vignetting
  • CNC-milled "crown grip" – offers excellent handling comfort
  • 7-layer anti-reflection coating on both sides with only 0.25% residual reflection per surface

Green Bandpass Filter 500nm: Provides the sharpest images with achromatic and semi-apochromatic refractor lenses (e.g. double star observations)

  • Improves the visibility of CO² frost and ground fog on Mars
  • Increases the contrast between red and blue regions on Jupiter and Saturn
  • Shows the best contrast on the moon in the Tyco, Copernicus and Kepler ray craters

Specifications

Capacity


Connection (to the telescope)
1,25"
Mount material
Aluminium
Coating of optical system
multiple
Frame
1,25"
passband (nm)
> 500
filter thickness (mm)
2

General


Type
Filters
Type of build
Planetary & Comet Filters

Area of application


Anti light-pollution
-
Visually useful
yes
Daylight and twilight observation
-
Mercury
-
Moon
yes
Venus
-
Mars
yes
Uranus
-
Saturn
yes
Jupiter
yes
Useful for photographs
yes
Twin stars
yes

Product safety

Manufacturer: Baader Planetarium GmbH, Zur Sternwarte, 82291 Mammendorf, DE, www.baader-planetarium.de

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*All prices include VAT plus shipping costs.

Baader Filters 500nm 1.25"
Light transmission curve

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