Used Baader O-III Nebula Visual Filter (10nm), 2" Pier Extension 75 filter thread) Standard package

75 filter thread) Standard package items  A 131F OTA，a pair of tube rings

50mm achromatic objective lens with adjustable focus

ASI2600 Pro camera was conceived having in mind the optimal characteristics for astrophotography

making sure it fits securely with the Seestar

Conditions:

Used Baader O-III Nebula Visual Filter (10nm), 2" Pier Extension 75 filter thread) Standard packageCondition: This is a used Baader O III 10nm visual filter in very good condition with mostly clean optics. There is some minor spotting; see the photos. It comes in its original jewel case. Description: Quick Overview Baader 2 OIII filter improves contrast of nebulae for visual observation and imaging 10nm passband includes OIII (501nm) and H Beta (486nm) wavelengths emitted by diffuse and planetary nebulae and supernova remnants Superior fine optical