Parfocal LRGB Filters
Broadband filters are parfocal which ensures that you will not have to refocus when you quickly switch filters to capture images.
Anti-Reflection Coatings
Multi-layers anti-reflection coating ensure no halos, ghosting or reflections. Filters are resistant to scratches and do not get affected by temperature change.
Equal weight on RGB filters
RGB color combine weights are 1:1:1
Limit Sodium Light Polution
A gap between green and red filters blocks out the primary Sodium light pollution line at 589nm and improves color balance and separation.
Bandpass Filters
Max Transmission
Filters have been designed to allow max transmission for true original, natural color imaging.
Narrowband Filters
Narrowband wavelength
Luminance (L)
The Luminance UV/IR Cut filter is designed for ultraviolet and infrared wavelength blocking to improve sharpness of the image and reduce halos on lens optical systems.
It can be used on a CMOS and CCD cameras which do not have an IR protection filter toward an image sensor or were remodeled (DSLR, Mirrorless).
This type is required to unfiltered CCD and CMOS sensors as they are extremely susceptible to UV and IR rays just outside the visible spectrum can have a very negative impact on image quality.
| SKU | PEG-FLTR-2M-L |
| Filter Size | 2 inch |
| Polish | 1/4 wavefront, Parfocal |
| Transmission Range | Tave>95%, 410-680nm |
| Coatings | Multilayer Anti-reflection |
| Type | Bandpass |
| Shape | Round |
| Thickness | 5mm (filter) + 2.5mm (thread) |
| Thread | M48, 0.75 pitch |
Red (R)
A high contrast Red filter suitable for CMOS and CCD sensors. Filter is IR-blocked
| SKU | PEG-FLTR-2M-R |
| Filter Size | 2 inch |
| Polish | 1/4 wavefront, Parfocal |
| Transmission Range | Tave>95%, 600-680nm |
| Coatings | Multilayer Anti-reflection |
| Type | Bandpass |
| Shape | Round |
| Thickness | 5mm (filter) + 2.5mm (thread) |
| Thread |
M48, 0.75 pitch |
Green (G)
A high contrast Green filter suitable for CMOS and CCD sensors. Filter is IR-blocked
| SKU | PEG-FLTR-2M-G |
| Filter Size | 2 inch |
| Polish | 1/4 wavefront, Parfocal |
| Transmission Range | Tave>95%, 500-550nm |
| Coatings | Multilayer Anti-reflection |
| Type | Bandpass |
| Shape | Round |
| Thickness | 5mm (filter) + 2.5mm (thread) |
| Thread | M48, 0.75 pitch |
Blue (B)
A high contrast Blue filter suitable for CMOS and CCD sensors. Filter is IR-blocked
| SKU | PEG-FLTR-2M-B |
| Filter Size | 2 inch |
| Polish | 1/4 wavefront, Parfocal |
| Transmission Range | Tave>95%, 410-500nm |
| Coatings | Multilayer Anti-reflection |
| Type | Bandpass |
| Shape | Round |
| Thickness | 5mm (filter) + 2.5mm (thread) |
| Thread | M48, 0.75 pitch |
Hydrogen Alpha (Ha)
This narrowband filter has a 7nm bandwidth of light centered on a wavelength of 656nm through, and reducing the transmission of certain wavelengths of light, specifically those produced by artificial light including mercury vapor, and both high and low pressure sodium vapor lights and the unwanted natural light caused by neutral oxygen emission in our atmosphere (i.e. skyglow). Better choice of narrowband H-alpha astrophotography filter for highest contrast and revealing subtle nebula details.
| SKU | PEG-FLTR-2M-HA |
| Filter Size | 2 inch |
| Polish | 1/4 wavefront, Parfocal |
| Transmission Range | Tave>80% 656 nm, 7nm FWHM |
| Coatings | Multilayer Anti-reflection |
| Type | Narrowband (7nm) |
| Shape | Round |
| Thickness | 5mm (filter) + 2.5mm (thread) |
| Thread | M48, 0.75 pitch |
Oxygen III (OIII)
OIII-CCD 7nm filter is designed for nebula observation allowing 7nm bandwidth of light centered on a wavelength of 500nm through, which corresponds to OIII emission lines, and reducing the transmission of certain wavelengths of light, specifically those produced by artificial light including mercury vapor, and both high and low pressure sodium vapor lights and the unwanted natural light caused by neutral oxygen emission in our atmosphere (i.e. skyglow).
| SKU | PEG-FLTR-2M-O3 |
| Filter Size | 2 inch |
| Polish | 1/4 wavefront, Parfocal |
| Transmission Range | Tave>80% 500 nm, 7nm FWHM |
| Coatings | Multilayer Anti-reflection |
| Type | Narrowband (7nm) |
| Shape | Round |
| Thickness | 5mm (filter) + 2.5mm (thread) |
| Thread | M48, 0.75 pitch |
Sulfur II (SII)
Extra narrowband SIICCD 7nm filter (Sulful II for CCD) is designed for nebula observation allowing 7nm bandwidth of light centered on a wavelength of 672nm through, and reducing the transmission of certain wavelengths of light, specifically those produced by artificial light including mercury vapor, and both high and low pressure sodium vapor lights and the unwanted natural light caused by neutral oxygen emission in our atmosphere (i.e. skyglow)
| SKU | PEG-FLTR-2M-S2 |
| Filter Size | 2 inch |
| Polish | 1/4 wavefront, Parfocal |
| Transmission Range | Tave>80% 672 nm, 7nm FWHM |
| Coatings | Multilayer Anti-reflection |
| Type | Narrowband (7nm) |
| Shape | Round |
| Thickness | 5mm (filter) + 2.5mm (thread) |
| Thread | M48, 0.75 pitch |