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Astronomy > Filters > Planetary & Comet Filters > Baader > Baader Filters 435nm 2"
Product no.: 10872

Filters 435nm 2"

$ 86.00 incl. VAT plus shipping costs
short-term
ready for shipping in 1-2 weeks + lead time
Compare the article with this offer: Omegon Filters #38A 2'' colour filter, dark blue

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

Dark blue bandpass filter 435 nm: Filter for visual and photographic planetary observations

  • Better recognition of the phase structure of Venus
  • The violet clearing on Mars can be seen more clearly
  • For observing the Great Red Spot on Jupiter, enhances the contrast between the bands and zones on Saturn

Specifications

Capacity


Connection (to the telescope)
2"
Mount material
Aluminium
Coating of optical system
multiple
Frame
2"
Central wavelength (nm)
435
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
-
Venus
yes
Mars
yes
Uranus
-
Saturn
yes
Jupiter
yes
Useful for photographs
yes

Product safety

Manufacturer: Baader Planetarium GmbH, Zur Sternwarte, 82291 Mammendorf, DE, www.baader-planetarium.de
Baader Filters 435nm 2"
Light transmission curve

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