Technical data sheet
Optolong L-Ultimate Filter 1.25"
In short: Exceptional optical quality and properties. 3 nm dual-band filter for nebula astrophotography. Transmission of H-alpha and OIII lines. Additional protection against light pollution. The Optolong L-Ultimate dual-band filter features a full width at half maximum (FWHM) of only 3 nm and is an excellent filter against light pollution for the reddish H-alpha and blue-green OIII wavelengths in astrophotography. Furthermore, it highlights weaker nebulae and brings out fine details. It has the same quality and coating as other Optolong filters and can also be used for fast focal ratios, down to approximately f/4. It does not matter whether you use DSLR, CMOS (mono or color), or CCD cameras.
Main features
Optolong quality for a reliable and satisfying observation experience.
- Type: Filter
- Connection (eyepiece side): 1.25"
- Frame: 1.25"
- Bandwidth (nm): OIII (500.7), H-alpha (656.3)
- Full width at half maximum (nm): 3
- Manufacturing technique: line filter
Main technical specifications
| Brand | Optolong |
| Model | Optolong L-Ultimate Filter 1.25" |
| Type | Dual-band narrowband filter (Hα+OIII 3 nm) |
| Connection (eyepiece side) | 1.25" |
| Frame | 1.25" |
| Bandwidth (nm) | OIII (500.7), H-alpha (656.3) |
| Full width at half maximum (nm) | 3 |
| Type | Filter |
| Manufacturing technique | line filter |
| Suitable for photography | yes |
| Light pollution suppression | yes |
| H-alpha | yes |
| Planetary nebulae | yes |
| Supernova remnants | - |
| Usable for visual observations | - |
| Emission nebulae | yes |
| Nebulae and Galaxies | no |
Take advantage of free shipping throughout Italy for orders over €199.99!
Optolong L-Ultimate Filter 1.25"
In short: Exceptional optical quality and properties. 3 nm dual-band filter for nebula astrophotography. Transmission of H-alpha and OIII lines. Additional protection against light pollution. The Optolong L-Ultimate dual-band filter features a full width at half maximum (FWHM) of only 3 nm and is an excellent filter against light pollution for the reddish H-alpha and blue-green OIII wavelengths in astrophotography. Furthermore, it highlights weaker nebulae and brings out fine details. It has the same quality and coating as other Optolong filters and can also be used for fast focal ratios, down to approximately f/4. It does not matter whether you use DSLR, CMOS (mono or color), or CCD cameras.
Main features
Optolong quality for a reliable and satisfying observation experience.
- Type: Filter
- Connection (eyepiece side): 1.25"
- Frame: 1.25"
- Bandwidth (nm): OIII (500.7), H-alpha (656.3)
- Full width at half maximum (nm): 3
- Manufacturing technique: line filter
Main technical specifications
| Brand | Optolong |
| Model | Optolong L-Ultimate Filter 1.25" |
| Type | Dual-band narrowband filter (Hα+OIII 3 nm) |
| Connection (eyepiece side) | 1.25" |
| Frame | 1.25" |
| Bandwidth (nm) | OIII (500.7), H-alpha (656.3) |
| Full width at half maximum (nm) | 3 |
| Type | Filter |
| Manufacturing technique | line filter |
| Suitable for photography | yes |
| Light pollution suppression | yes |
| H-alpha | yes |
| Planetary nebulae | yes |
| Supernova remnants | - |
| Usable for visual observations | - |
| Emission nebulae | yes |
| Nebulae and Galaxies | no |
Take advantage of free shipping throughout Italy for orders over €199.99!
SKU:79624
Optolong L-Ultimate Filter 1.25"
- Regular price
- €224,99
- Sale price
- €224,99
- Regular price
-
€259,00
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Paga in 3 rate da €74,99 senza interessi.
Optolong L-Ultimate Filter 1.25"
In short: Exceptional optical quality and properties. 3 nm dual-band filter for nebula astrophotography. Transmission of H-alpha and OIII lines. Additional protection against light pollution. The Optolong L-Ultimate dual-band filter features a full width at half maximum (FWHM) of only 3 nm and is an excellent filter against light pollution for the reddish H-alpha and blue-green OIII wavelengths in astrophotography. Furthermore, it highlights weaker nebulae and brings out fine details. It has the same quality and coating as other Optolong filters and can also be used for fast focal ratios, down to approximately f/4. It does not matter whether you use DSLR, CMOS (mono or color), or CCD cameras.
Main features
Optolong quality for a reliable and satisfying observation experience.
- Type: Filter
- Connection (eyepiece side): 1.25"
- Frame: 1.25"
- Bandwidth (nm): OIII (500.7), H-alpha (656.3)
- Full width at half maximum (nm): 3
- Manufacturing technique: line filter
Main technical specifications
| Brand | Optolong |
| Model | Optolong L-Ultimate Filter 1.25" |
| Type | Dual-band narrowband filter (Hα+OIII 3 nm) |
| Connection (eyepiece side) | 1.25" |
| Frame | 1.25" |
| Bandwidth (nm) | OIII (500.7), H-alpha (656.3) |
| Full width at half maximum (nm) | 3 |
| Type | Filter |
| Manufacturing technique | line filter |
| Suitable for photography | yes |
| Light pollution suppression | yes |
| H-alpha | yes |
| Planetary nebulae | yes |
| Supernova remnants | - |
| Usable for visual observations | - |
| Emission nebulae | yes |
| 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
Paga in 3 rate da €74,99 senza interessi.