Antlia ALP-T Dualband 3nm SII & OIII Filter - 2" - ALP-T-3NM-SII/OIII-2 Highspeed Filters Planets and lunar features retain

Planets and lunar features retain their shapes as they transit the field and the true field sizes are close to theoretical

Field Stop Diameter: 31

255-level dimming meets the flat-field shooting needs

Super Wide FOV

Antlia ALP-T Dualband 3nm SII & OIII Filter - 2" - ALP-T-3NM-SII/OIII-2 Highspeed Filters Planets and lunar features retainThis ALP T, or Anti Light Pollution Filter, allows a 3nm narrowband transmission from both the OIII and SII bands! This model comes in a 2" threaded filter cell, which allows it to be connected to the 2" threaded accessory of your choice, including a 2" filter wheel or filter holder. For f 4 or slower telescopes. Antlia ALP T Dualband 3nm SII & OIII Filter 2" This dual narrowband filter lets the deep red Sulfur II 672. 4nm and the blue green OIII