Filter · MSRP $269
Antlia CaK 3nm 393.3nm Filter - 1.25" Mounted
Key specifications
| Filter type | Solar |
|---|---|
| Passband | CaK 393.3nm |
| Bandwidth | 3 nm |
| Filter size | 1.25" |
| Mounted | Yes |
About
A 3nm Calcium-K (393.3nm) solar imaging filter on a heat-resistant double-polished substrate, with OD5 blocking from 200-1200nm, made to screw into Antlia's Herschel wedge for imaging sunspots and granulation.