IDAS NBZ-II 2 Inch HA/OIII Filter
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The IDAS NBZ-II is a new dual band nebula booster filter - the successor to the NBZ (NBZex) filter. The FWHM of the NBZ-II is 8nm (+/=0.4nm) at OIII, and 10nm (+/-0.4nm) at H-alpha respectively. This has the same anti-Haloing characteristics as the NBZ did. A test report of the actually measured optical properties is provided with each individual NBZ-II filter piece shipped.
Filter has been used very little; no marks of scratches on the glass or frame.
Filter has been used very little; no marks of scratches on the glass or frame.
Funding Member
