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Chroma Filters (6)
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Astrodon Filters (29)
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Visual Filters (67)
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Chroma H-alpha filter, 5nm FWHM
$460.00 – $1,195.00- H-alpha filters are essential for imaging nebulae and other objects which are rich in ionized hydrogen.
- At 656.3nm, a narrow-band emission filter is required to separate H-alpha from the SII doublet (671.6nm and 673.1nm).
- Parfocal for systems f/4.0 or slower
- Transmitted wavefront better than 0.25 waves/inch
- Parallelism: less than 30 arcsec
- Made in the U.S.A.
Chroma H-alpha filter, 5nm FWHMSeptember 2, 2020 -
Chroma H-alpha filter, 8nm FWHM
$265.00 – $915.00- H-alpha filters are essential for imaging nebulae and other objects which are rich in ionized hydrogen.
- At 656.3nm, a narrow-band emission filter is required to separate H-alpha from the SII doublet (671.6nm and 673.1nm).
- Parfocal for systems f/4.0 or slower
- Transmitted wavefront better than 0.25 waves/inch
- Parallelism: less than 30 arcsec
- Made in the U.S.A.
Chroma H-alpha filter, 8nm FWHMSeptember 2, 2020 -
Chroma LRGB filter set, Luminance, Red, Green, Blue
$475.00 – $2,595.00- 2″ Luminance, Red, Green, and Blue filter set
- Parfocal for systems f/4.0 or slower
- Made in America
Chroma LRGB filter set, Luminance, Red, Green, BlueSeptember 2, 2020 -
Chroma OIII filter, 5nm FWHM
$460.00 – $1,195.00- H-alpha filters are essential for imaging nebulae and other objects which are rich in ionized hydrogen.
- At 656.3nm, a narrow-band emission filter is required to separate H-alpha from the SII doublet (671.6nm and 673.1nm).
- Parfocal for systems f/4.0 or slower
- Transmitted wavefront better than 0.25 waves/inch
- Parallelism: less than 30 arcsec
- Made in the U.S.A.
Chroma OIII filter, 5nm FWHMSeptember 2, 2020 -
Chroma SII filter, 5nm FWHM
$460.00 – $1,195.00- SII filters isolate the spectral emission of singly ionized sulfur atoms, also common in nebulae. Emission is at two lines occurring as a doublet, at 671.6 and 673.1 nm. This filter also separates sulfur emission from H-alpha emission (656.3nm).
- Parfocal for systems f/4.0 or slower
- Transmitted wavefront better than 0.25 waves/inch
- Parallelism: less than 30 arcsec
- Made in the U.S.A.
Chroma SII filter, 5nm FWHMSeptember 2, 2020 -
Classic Lumicon 2 Inch Oxygen III Filter (2nd Quality)
$200.00$160.002nd Quality Filters have small defects that do not significantly affect performance
Classic Lumicon 2 inch Oxygen III Filter
Helps faint objects become much more visible against the blackened background of space.
Classic Lumicon 2 Inch Oxygen III Filter (2nd Quality)July 12, 2019 -
Hard Plastic Filter Case for 2″ or 1.25″ filters, Set of 20 (used)
$40.00$25.00Closeout Scratch and Dent Pricing! Minor blemishes do not affect performance.
Hard Plastic Filter Case for 2″ or 1.25″ filters, Set of 20 (used)May 8, 2019 -
Hard Plastic Filter Case for 2″ or 1.25″ filters, Set of 5
$40.00$25.00Hard Plastic Filter Case for 2″ or 1.25″ filters, Set of 5August 13, 2020 -
IDAS NBX Nebula Booster Filter, 48mm, mounted dual bandpass, H-α & OIII
$299.00-
- 10nm bandpass for Ha and OIII respectively.
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- IDAS-proprietary “flat-top”, “steep cut-off” and “off-center” design eliminates the emissions’ signal loss due to the spectrum shift until F2 speed.
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- Available 48mm and 52mm mounted (2.5mm thickness)
- No IR blocker required
IDAS NBX Filters are designed to enhance the contrast of Hα and OIII emission nebula, yet accommodate the filter spectral shift when used with modern fast optical systems. This dual-band filter is ideal for one-shot color cameras as well as mono-color astronomical cameras
IDAS NBX Nebula Booster Filter, 48mm, mounted dual bandpass, H-α & OIIISeptember 29, 2020 -
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IDAS NBX Nebula Booster Filter, 52mm, mounted dual bandpass, H-α & OIII
$299.00-
- 10nm bandpass for Ha and OIII respectively.
- IDAS-proprietary “flat-top”, “steep cut-off” and “off-center” design eliminates the emissions’ signal loss due to the spectrum shift until F2 speed.
- Available 48mm and 52mm mounted (2.5mm thickness)
- No IR blocker required
IDAS NBX Filters are designed to enhance the contrast of Hα and OIII emission nebula, yet accommodate the filter spectral shift when used with modern fast optical systems. This dual-band filter is ideal for one-shot color cameras as well as mono-color astronomical cameras
IDAS NBX Nebula Booster Filter, 52mm, mounted dual bandpass, H-α & OIIISeptember 29, 2020 -
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Lumicon 1.25 Inch #11 Yellow-Green Color Filter
$36.00Lumicon 1.25 Inch #11 Yellow-Green Color Filter brings out more detail in the Casinni division of Saturn’s rings as well as clouds and red-blue contrast, maria on Mars, and the clouds of Jupiter. Fits any standard 1.25″ eyepiece.
Lumicon 1.25 Inch #11 Yellow-Green Color FilterJanuary 20, 2018 -
Lumicon 1.25 Inch #12 Deep Yellow Color Filter
$46.00Lumicon 1.25 Inch #12 Deep Yellow Color Filter highlights the red-orange regions and cloud features of Jupiter and Saturn, contrasting features on the Moon, and green-blue regions on Mars. Fits any standard 1.25″ eyepiece.
Lumicon 1.25 Inch #12 Deep Yellow Color FilterJanuary 20, 2018
