Technical data sheet
Optolong OIII 3nm 2" Filter
OIII filter: the narrowband nebula filter allows light to pass at 500 nanometers. This is the doubly ionized oxygen line. Planetary nebulae and supernova remnants are of this color.
Main features
Optolong quality for a reliable and satisfying observation experience.
- Type: Filter
- Connection (eyepiece side): 2"
- Frame: 2"
- Bandwidth (nm): 500
- Full Width at Half Maximum (nm): 3
- Connection (telescope side): 2"
Main technical specifications
| Brand | Optolong |
| Model | Optolong OIII 3nm 2" Filter |
| Type | OIII-Filter |
| Connection (eyepiece side) | 2" |
| Frame | 2" |
| Bandwidth (nm) | 500 |
| Full Width at Half Maximum (nm) | 3 |
| Connection (telescope side) | 2" |
| Type | Filter |
| Manufacturing technique | linear filter |
| Useful for photography | yes |
| Light pollution suppression | yes |
| Planetary nebulae | yes |
| Supernova remnants | yes |
| Suitable for visual observations | yes |
| Emission nebulae | - |
| Nebulae and Galaxies | no |
Take advantage of free shipping throughout Italy for orders over €199.99!
Optolong OIII 3nm 2" Filter
OIII filter: the narrowband nebula filter allows light to pass at 500 nanometers. This is the doubly ionized oxygen line. Planetary nebulae and supernova remnants are of this color.
Main features
Optolong quality for a reliable and satisfying observation experience.
- Type: Filter
- Connection (eyepiece side): 2"
- Frame: 2"
- Bandwidth (nm): 500
- Full Width at Half Maximum (nm): 3
- Connection (telescope side): 2"
Main technical specifications
| Brand | Optolong |
| Model | Optolong OIII 3nm 2" Filter |
| Type | OIII-Filter |
| Connection (eyepiece side) | 2" |
| Frame | 2" |
| Bandwidth (nm) | 500 |
| Full Width at Half Maximum (nm) | 3 |
| Connection (telescope side) | 2" |
| Type | Filter |
| Manufacturing technique | linear filter |
| Useful for photography | yes |
| Light pollution suppression | yes |
| Planetary nebulae | yes |
| Supernova remnants | yes |
| Suitable for visual observations | yes |
| Emission nebulae | - |
| Nebulae and Galaxies | no |
Take advantage of free shipping throughout Italy for orders over €199.99!
SKU:73722
Optolong OIII 3nm 2" Filter
- Regular price
- €363,99
- Sale price
- €363,99
- Regular price
-
€508,00
Hai trovato un prezzo migliore?
Optolong OIII 3nm 2" Filter
OIII filter: the narrowband nebula filter allows light to pass at 500 nanometers. This is the doubly ionized oxygen line. Planetary nebulae and supernova remnants are of this color.
Main features
Optolong quality for a reliable and satisfying observation experience.
- Type: Filter
- Connection (eyepiece side): 2"
- Frame: 2"
- Bandwidth (nm): 500
- Full Width at Half Maximum (nm): 3
- Connection (telescope side): 2"
Main technical specifications
| Brand | Optolong |
| Model | Optolong OIII 3nm 2" Filter |
| Type | OIII-Filter |
| Connection (eyepiece side) | 2" |
| Frame | 2" |
| Bandwidth (nm) | 500 |
| Full Width at Half Maximum (nm) | 3 |
| Connection (telescope side) | 2" |
| Type | Filter |
| Manufacturing technique | linear filter |
| Useful for photography | yes |
| Light pollution suppression | yes |
| Planetary nebulae | yes |
| Supernova remnants | yes |
| Suitable for visual observations | yes |
| Emission nebulae | - |
| Nebulae and Galaxies | no |
Take advantage of free shipping throughout Italy for orders over €199.99!
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Terms and conditions
Terms and conditions

