- This is a used filter in excellent condition
Used IDAS 72mm LPS-P2Light pollution suppression (LPS) filters are designed to suppress the common emission lines generated by artificial lighting, yet allow the important nebula emission lines to pass, thus enhancing the contrast of astronomical objects, particularly emission nebulae.
Unlike other light pollution suppression filters, IDAS filters are specifically designed for balanced color transmission using the IDAS unique Multi-Bandpass Technology (MBT) process. The balanced transmission allows color photographs to be taken with minimal color cast to broadband emission objects such as stars, galaxies and globular clusters. The comparison photos at right demonstrate (qualitatively) that the IDAS filter maintains better color balance than other filters which have been designed for visual use.
CCD imaging can also benefit, because although CCD imagers can already shoot through light pollution to some extent, including an LPS filter to the setup gives an added (signal-to-noise) edge.
Main characteristics of the IDAS LPS P2 nebula filter:
-- Especially designed for DSLR and single-shot CCD colour cameras
-- High quality anti-reflective coatings
-- Substrate thickness: 3.0 mm
Transmission curve of the LPS-P2 filters compared with the D1:
D1 is more optimized for one-shot color cameras, especially modified DSLRs while P2 is more optimized for the monochrome cameras.
P2 passes SII while D1 doesn't. SII is too weak for one-shot color to capture. Instead, D1 is tweaked for better color balance.
Compare IDAS LPS Filters with other:
- IDAS 72mm LPS-P2 filter
- Plastic case
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