NPB - Narrow Pass Band Nebula (496BP22) 2" Astronomy Filter

SKU: XAF-NPB200

An ultra high contrast type of filter that is very effective for small and fainter emission planetary nebula, as well as a variety of bright nebula, especially through larger scopes. 2 inch diameter.

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Narrow Pass Band Nebula (NPB) Filter - 496BP22

Spectral Curves

The spectral curve and ascii data is a typical representation of this filter’s performance, but will vary due to production and design variations. Omega only guarantees this part to meet the product specifications listed. The displayed OD is calculated from a %T measurement. The blocking regions are likely higher OD than what is displayed here. To learn more about the challenges of measuring high OD values, see our paper.

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Detailed Specifications

Physical Thickness
0.00
Physical Diameter
0.00
Diameter Tolerance (mm)
Nominal
Thickness Tolerance (mm)
Nominal
Clear Aperture Diameter (mm)
Per 48MM Camera Ring
Mounting (Outer Ø - Thickness - Clear Aperture in mm)
M03-FC 48MM
Center Wavelength (nm)
496.00
Center Wavelength Tolerance (nm)
+4/-4
FWHM Bandwidth (nm)
23.00
FWHM Bandwidth Tolerance (nm)
+5/-2
Transmission
≥90% peak
Blocking
≥ OD2 540-590nm
Transmitted Wavefront Distortion
≤ 3 waves
Angle of Incidence
0
Minimum Surface Quality
Assembly per MIL-C-48497A (F scratch/ F Dig)
Mounting Type
Ring Mounted
Coating Type
Surface Coating
Shape
Round
Filter Type
Bandpass
Filter Application
Astronomy
Fluorescence Component
Astronomy
Clear Aperture Diameter Tolerance
Nominal
Flatness
ns
Parallelism
≤ 1 arc minute