Antlia ALP-T Dualband 5nm HA & OIII Filter - High Speed Version for f/2.2 - f/3.6 Optics - 2" - ALPT-DB-5NM-HAOIII-HS-2 Vixen Dovetail Plates EdgeHD or RASA OTA by

EdgeHD or RASA OTA by replacing the corrector plate retaining ring that is already part of your telescope

the ball head will actually hold a maximum payload of 20 lbs (9

The "is" versions of the Tele Vue-60

Built in adjustable polarizing filter

) and is CNC machined of aircraft grade aluminum

Antlia ALP-T Dualband 5nm HA & OIII Filter - High Speed Version for f/2.2 - f/3.6 Optics - 2" - ALPT-DB-5NM-HAOIII-HS-2 Vixen Dovetail Plates EdgeHD or RASA OTA byAbout the High Speed Characteristics of this Dual Ha OIII 5nm Filter The Antlia ALP T Dual Band 5nm Highspeed Filters are further optimized to work with very fast imaging systems by shifting the passband and center wavelength slightly. Using these highspeed filters with optical focal ratios between f 2. 2 and f 3. 6 shows more contrast in nebulae imaging compared to the standard version of this filter. For f ratios slower than f 3. 6, the standard ALP