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Filters > Nebulae filters > OIII Filters > Baader > f/2 Highspeed > Baader Filters OIII CMOS f/2 Highspeed 65x65mm
Product no.: 70920

Filters OIII CMOS f/2 Highspeed 65x65mm

$ 386.00 Sale price:
$ 234.02 incl. VAT, plus shipping costs
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Product description

More about the series f/2 Highspeed...

OIII filtersonly allow light with a wavelength of 501 nanometres through. This corresponds with the spectrum lines fordouble ionised oxygen. These lines are emitted by planetary nebulae and some emission nebulae, so these objects remain visible whilst the rest is blocked out by the filter. This effect increases contrast and makes faint nebulae visible for the first time.

Astrophotography:These filters are best used with monochrome cameras. Ideally, images taken using these filters should be combined with images using H-alpha and SII filters. This creates an image which depicts faint nebulae clearly and with high-contrast.

Specifications

Capacity


Central wavelength (nm)
500,7
Half-value width (nm)
6,5
Frame
Frames
Mount material
Aluminium
Coating of optical system
Reflex-Blocker™
Appropriate for...
f/3.4 - f/1.8
filter thickness (mm)
2
Filter Size (mm)
65 x 65

General


Type
Filters
Type of build
line filter
Series
f/2 Highspeed

Area of application


Useful for photographs
yes
Visually useful
no
Twin stars
no
Moon & Planets
no
Nebulae & galaxies
yes
Baader Filters OIII CMOS f/2 Highspeed 65x65mm
Light transmission curve

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