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Filters > Nebulae filters > SII Filters > Baader > f/3 Ultra-Highspeed > Baader Filters SII CMOS f/3 Ultra-Highspeed 1.25"
Product no.: 75584

Filters SII CMOS f/3 Ultra-Highspeed 1.25"

$ 271.00 incl. VAT, plus shipping costs
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Product description

SII filter: The narrowband S-II 7nm filter passes light at 672nm wavelength with a bandpass of 3nm which is designed for nebula fotography.

It is suitable for most emission nebulae, planetary nebulae and supernova remnants.

f you want the look of Hubble Space Telescope (HST) images, such as the famous “Pillars of Creation” (the Eagle Nebula, Messier 16), then the next filter to consider adding to your collection after H-a and OIII is the SII (es-two) or sulfur filter. The SII filter, like H-a, is a deep red filter near 672 nm. H-a, OIII and SII filters provide that Hubble look for many emission nebula. Again, tri-color narrowband imaging with these three filters can be done with the moon up, so your equipment is not sitting dormant for several weeks.

Specifications

Capacity


Central wavelength (nm)
671,7
Half-value width (nm)
4
Frame
1,25"
Mount material
Aluminium
Coating of optical system
Reflex-Blocker™
Appropriate for...
f/3,4 - f/2,3
Connection (to the telescope)
1,25"
filter thickness (mm)
2

General


Type
Filters
Type of build
line filter
Series
f/3 Ultra-Highspeed

Area of application


Useful for photographs
yes
Visually useful
no
Nebulae & galaxies
yes
Moon & Planets
no

Recommended accessories

Filters (1)

Omegon 1.25'' filter wheel

$ 189.00*

*All prices include VAT plus shipping costs.

Baader Filters SII CMOS f/3 Ultra-Highspeed 1.25"
Light transmission curve
Baader Filters SII CMOS f/3 Ultra-Highspeed 1.25"
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