Details
Description
in nice used condition
The new IDAS LPS-V4 filter is designed to
provide maximum contrast between key astronomical emission lines and a
light polluted sky. These filters incorporate IDAS MBT, UFP, and IGAD
technologies to insure undegraded and extremely durable optical
performance. Compared with is predecessors, it offers narrower H-alpha
bandpass and retains an excellent color balance.