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Custom Scientific
Picture of Custom Scientific Clear Filter for UVBRI Set 1.25" (Research Grade Mounted)
Clear Research Grade Filter for UVBRI set, 1.25". Clear filters transmit all wavelengths from the UV to the far IR; they are clear, high-precision, optical windows designed to transmit all wavelengths of light without having to refocus when switching back to a color filter.

$90.00

Picture of Custom Scientific Luminance IR-Blocked Clear 1.25" (Mounted)
This is a clear infra-red blocking filter in the commonly used 1.25" size. Used when taking RGB images to remove IR for better color balance.

$95.00

Picture of Custom Scientific Neutral Density Filter 1.25" (Mounted)
Neutral Density (ND 2, 1.0%T) 1.25", mounted. All of our astronomical filters have IR blocking "built-in" so IR light does not contaminate today's sensitive CCD detectors. When you use filters from Custom Scientific, you do not need any additional IR blocker filters.

$150.00

Picture of Custom Scientific IR Blocked Clear (Luminance) 50m Round Filter (Unmounted)
All of our astronomical filters have IR blocking "built-in" so IR light does not contaminate today's sensitive CCD detectors.

$150.00

Picture of Custom Scientific UBVR or I Filter 1.25" (Research Grade Mounted)
Your choice: U, B, V, R, or I, 1.25" Research Grade filter, mounted. Research Grade filters have surface flatness of Lambda/4 per inch and 1 arc minute parallelism. Price is for each filter. Please specify when ordering.

$175.00

Picture of Custom Scientific Clear Filter for UVBRI Set 50mm (Standard Grade Unmounted)
Clear Standard Grade Filter for UVBRI set, 50mm. Clear filters transmit all wavelengths from the UV to the far IR; they are clear, high-precision, optical windows designed to transmit all wavelengths of light without having to refocus when switching back to a color filter.

$225.00

Picture of Custom Scientific Neutral Density Filter 50mm  (Unmounted)
Neutral Density (ND 2, 1.0%T) 50mm, unmounted. All of our astronomical filters have IR blocking "built-in" so IR light does not contaminate today's sensitive CCD detectors.

$225.00

Picture of Custom Scientific H-Alpha 656.3/10nm 1.25" w/AR Coatings (Mounted)
For nighttime use only. NOT for solar viewing. Hydrogen-alpha 10nm passband. This filter is designed for non-solar imaging, and is used to image deep-sky objects that emit in the h-alpha passband. It is too wide for solar-prominence viewing, but is ideal for deep sky. Filter has Anti Reflective Coatings.

$290.00

Picture of Custom Scientific UBVR or I Filter 50mm (Standard Grade Unmounted)
Your choice: U, B, V, R, or I, 50mm Standard Grade filter, mounted. Price is for each filter. Please specify when ordering.

$295.00

Picture of Custom Scientific Green Continuum 510/10 1.25" w/AR Coatings (Mounted)
Used in conjunction with the OIII filter for subtraction of green background. Filter has Anti Reflective Coatings.

$350.00

Picture of Custom Scientific Blue Continuum 475/10 1.25" w/AR Coatings (Mounted)
Used for subtraction of blue background. All of our astronomical filters have IR blocking "built-in" so IR light does not contaminate today's sensitive CCD detectors. When you use filters from Custom Scientific, you do not need any additional IR blocker filters. One exception is in the thickness-matched Clear filters which transmit all wavelengths from the UV to the far IR; they are clear, high-precision, optical windows designed to transmit all wavelengths of light without having to refocus when switching back to a color filter. Filter has Anti Reflective Coatings.

$350.00

Picture of Custom Scientific Neutral Density Filter 65mm Square Filter
Neutral Density (ND 2, 1.0%T) 50mm, unmounted. All of our astronomical filters have IR blocking "built-in" so IR light does not contaminate today's sensitive CCD detectors.

$475.00

Picture of Custom Scientific H-Beta 486.1/4.5 1.25" w/AR Coatings (Mounted)
A 4.5nm passband filter for imaging deep sky objects in the light of hyrogen-beta emissions. This filter passes the h-beta emission line while blocking other wavelengths. Filter has Anti Reflective Coatings.

$495.00

Picture of Custom Scientific Sulfur II 672.4/4.5nm 1.25" w/AR Coatings (Mounted)
Sulfur II 672.4/4.5nm, 1.25" with Anti Reflective Coatings.

$495.00

Picture of Custom Scientific Oxygen III 500.7/4.5 1.25" w/AR Coatings (Mounted)
A 4.5nm passband filter for imaging emission nebula. This filter passes the Oxygen III emission line while blocking other wavelengths. Filter has Anti Reflective Coatings.

$495.00

Picture of Custom Scientific RGB and Clear Filter Set 1.25" (Mounted)
Red, Green, Blue, and Clear filters in the most commonly used format: 1.25".

$495.00

Picture of Custom Scientific H-Alpha 656.3/4.5 1.25" w/AR Coatings (Mounted)
Hydrogen-alpha 4.5nm passband. This filter is designed for non-solar imaging, and is used to image deep-sky objects that emit in the h-alpha passband. It is too wide for solar-prominence viewing, but is ideal for deep sky. Filter has Anti-Reflective Coatings.

$600.00

Picture of Custom Scientific H-Alpha 656.3/10nm 50mm w/AR Coatings (Unmounted)
For nighttime use only. NOT for solar viewing. Hydrogen-alpha 10nm passband. This filter is designed for non-solar imaging, and is used to image deep-sky objects that emit in the h-alpha passband. It is too wide for solar-prominence viewing, but is ideal for deep sky. Filter has Anti Reflective Coatings. NOTE: 1.25" mounted illustrated.

$695.00

Picture of Custom Scientific H-Alpha 656.3/4.5nm 50mm w/AR Coatings (Unmounted)
H-Alpha 656.3/4.5 50mm with anti-reflection coatings. For nighttime use only. NOT for solar viewing. Hydrogen-alpha 4.5nm passband. This filter is designed for non-solar imaging, and is used to image deep-sky objects that emit in the h-alpha passband. It is too wide for solar-prominence viewing, but is ideal for deep sky.

$695.00

Picture of Custom Scientific Methane 889/18nm 1.25" w/AR Coatings (Mounted)
Methane 889/18nm 1.25" filter with Anti Reflective Coatings. All of our astronomical filters have IR blocking "built-in" so IR light does not contaminate today's sensitive CCD detectors.

$720.00

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9973 padilla heights road, anacortes, wa 98221 USA | phone : (360) 588-9000 FAX: (360) 588-9100

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