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VHT - Very High Throughput Nebula (494BP32) 2" Astronomy Filter

VHT - Very High Throughput Nebula (494BP32) 2" Astronomy Filter

Availability: 6 In stock

An excellent Nebula filter for smaller scopes (4-6 inches aperture) where light gathering and throughput are at a premium. It is also quite effective with larger scopes. 1.25 inch diameter.
Customize this Filter: Request a quote for custom specifications, sizes, or volume quantities.



Very High Throughput Nebula (VHT) - 494BP32

Spectral Curves

The spectral curve and ascii data is a typical representation of this filter's performance, but may vary due to production and design variations. Omega only guarantees this part to meet the product specifications listed.

Detailed Specifications

Additional Information

Filter Type Bandpass
Inventory Type Stock
Coating Type Surface Coating
Shape Round
Diameter (mm) Per 48MM Camera Ring
Diameter Tolerance (mm) Nominal
Thickness (mm) Per 48MM Camera Ring
Thickness Tolerance (mm) Nominal
Clear Aperture Diameter (mm) Per 48MM Camera Ring
Clear Aperture Diameter Tolerance (mm) Nominal
Flatness ns
Parallelism ≤ 1 arc minute
Mounting Type Ring Mounted
Mounting (Outer Ø - Thickness - Clear Aperture in mm) M03-FC 48MM
Center Wavelength (nm) 494
Center Wavelength Tolerance (nm) +4/-4
FWHM Bandwidth (nm) 34
FWHM Bandwidth Tolerance (nm) +6/-3
Transmission ≥ 90% peak
Blocking ≥ OD1 540-590nm
Transmitted Wavefront Distortion ≤ 3 waves
Angle of Incidence 0
Minimum Surface Quality Assembly per MIL-C-48497A (F scratch/ F Dig)