Antlia ALP-T Dual Band 3nm Ha&OIII + 3.5nm SII&Hb 2" Filter Set (ALP-T-3NM-SET-2) Hard Case each eyepiece is firmly clamped

each eyepiece is firmly clamped

All other brand Focusers with M54 threads

and OIII 3nm narrow band filters

The Baader Moon & Skyglow Neodymium Filter are two filters in one: Neodymium contrast enhancement filter and UV/IR blocker

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 each eyepiece is firmly clampedAntlia 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