Antlia ALP-T Dual Band 3nm Ha&OIII + 3.5nm SII&Hb 2" Filter Set (ALP-T-3NM-SET-2) Hard Case All Garrett pans are lightweight

All Garrett pans are lightweight

and OIII 3nm narrow band filters

5nm bandwidth of light centered on a wavelength of 672nm through

Clear windows built into motor covers so pulleys and belts can be monitored

Ideally suited for both the beginner astronomy enthusiast looking for a first telescope and as a casual backyard/travel alternative for the experienced observer

Antlia ALP-T Dual Band 3nm Ha&OIII + 3.5nm SII&Hb 2" Filter Set (ALP-T-3NM-SET-2) Hard Case All Garrett pans are lightweightAntlia ALP T Dualband 3nm Ha&OIII Filter: The Antlia ALP T Dualband 3nm Ha&OIII Filter is a dual narrowband filter, which lets the red H alpha (656. 3nm) and the blue green OIII (500. 7nm) lines through and is primarily engineered for color cameras to assist astrophotographers taking deep sky images with superior SNR(Signal to Noise Ratio). With an FWHM half bandwidth designed at 3nm and achieving an optical density (OD) of 4. 5 on unwanted