Antlia ALP-T Dual Narrowband OIII (5nm) & H-a (5nm) High Speed Filter for f/2.2 - f/3.6 Telescopes - 36mm Round Unmounted

ALP-T Dual Band 5nm Highspeed Filters # ALP-T-2-HS are further optimized to work with high-speed imaging systems by shifting slightly the passband and

Antlia ALP-T Dual Band 5nm Ha&OIII Highspeed Filter - 2.00'' Mounted - ANTLIA ASTRONOMY FILTER

Antlia ALP-T Dual Narrowband OIII (5nm) & H-a (5nm) Highspeed Filter for f/ 2.2 - f/4 Telescopes - 2 Mounted - AliExpress

Antlia Triband RGB Ultra & ALP-T Dual Narrowband OIII (5nm) & H-a (5nm) Filter for f/3.6 & Slower Telescopes - Beginning Deep Sky Imaging - Cloudy Nights

Antlia ALP-T Dual Band 5nm Ha and OIII Filter

Antlia ALP-T Dual Band Highspeed 5nm Ha and OIII Filter

Teleskop-Express: Antlia 2 ALP-T Dual Band Filter 5 nm Highspeed Narrow Band Nebula Filter-ALP-THS-2

Antlia ALP-T Dual Narrowband H-a & OIII/H-b & SII (5nm) 2 Filter Set for f/ 3.6 & Slower Telescopes - 2 Mounted - AliExpress

ANTLIA ALP-T gold Dual Band 5nm Filter- 36mm - HIGH SPEED Version for f/ 2.2 to f/3.6 - ANT-ALP-T-36MM-HIGHSPEED

Antlia ALP-T Dual Band 5nm Highspeed Filter — Astronomy Plus

Antlia ALP-T 5nm dual-band filter – Astronomy Now