Antlia ALP-T Dualband 3nm SII & OIII Filter - 2" - ALP-T-3NM-SII/OIII-2 Quintuplet Refractors Optical path length is only

Optical path length is only a short 16mm

The ZWO H-Alpha filter has a bandpass of 7nm and passes light at the 656nm wavelength

GEM45(may limit low latitude application)

Compatible with the Celestron StarSense Explorer DX 102AZ or the Celestron Omni XLT AZ 102

because you may want to introduce an accessory like a flip mirror or filter wheel in between the Explore Scientific Focal Extender and a CCD camera

Antlia ALP-T Dualband 3nm SII & OIII Filter - 2" - ALP-T-3NM-SII/OIII-2 Quintuplet Refractors Optical path length is onlyThis 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