Filter · MSRP $79
Optolong Night Sky H-Alpha 1.25"
Key specifications
| Filter type | Other |
|---|---|
| Passband | >650 nm (IR pass) |
| Filter size | 1.25" |
| Mounted | Yes |
About
IR-pass 650 nm long-pass filter for IR-LRGB planetary imaging, giving a sharper luminance channel because seeing distortion is lower at longer wavelengths; 1.25-inch mounted.