Optolong SHO Filter Set 2" (H-alpha/O-III/S-II)
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Vai al moduloThe Optolong SHO Filter Set 2" (H-alpha 7nm / O-III 6.5nm / S-II 6.5nm) is the combination of three narrowband filters designed for tri-color imaging of emission nebulae in the famous "Hubble" palette (SHO), at an affordable price.
Three filters, one palette
The set includes an H-alpha filter (656nm, 7nm bandwidth), an O-III filter (500nm, 6.5nm bandwidth) and an S-II filter (672nm, 6.5nm bandwidth). They are suitable for most emission nebulae, planetary nebulae and supernova remnants, and can be used even with the moon high in the sky or under strong urban light pollution, without exposure time being an issue.
Construction and coatings
The filters are made with high-quality optical substrate and multi-layer coating using ion-assisted deposition (IAD) technology, which ensures scratch resistance and central wavelength stability even with temperature changes. The frame is aluminum.
Technical specifications
| Parameter | Value |
|---|---|
| Filters included | H-alpha, O-III, S-II |
| Bandwidth | H-alpha 7nm / O-III 6.5nm / S-II 6.5nm |
| Format | 2" (50.8mm) |
| Frame | Aluminum |
| Brand | Optolong |
Who it's for
Ideal for those getting started with narrowband imaging who want to create false-color images in the "Hubble Palette" style of emission nebulae, without having to buy the three filters separately. Compatible with 2" filter wheels and most monochrome CMOS cameras for astrophotography.