Filter · 2009–
Celestron Oxygen III Narrowband Filter 2"
Key specifications
| Filter type | Narrowband |
|---|---|
| Passband | OIII 496/501nm |
| Filter size | 2" |
| Mounted | Yes |
About
2" narrowband OIII filter; same 496/501nm passband as the 1.25". For 2" eyepieces/imaging.
Filter · 2009–
| Filter type | Narrowband |
|---|---|
| Passband | OIII 496/501nm |
| Filter size | 2" |
| Mounted | Yes |
2" narrowband OIII filter; same 496/501nm passband as the 1.25". For 2" eyepieces/imaging.