How does one distinguish Lumicon nebular filter types from each other?
For those who have inadvertently lost track of the identities of their Lumicon filters, follow these guidelines: The traditional Deep Sky Filter (Visual & Photographic) will make the daytime sky or fluorescent lights appear a deeper blue than will the Ultra-High-Contrast Filter. Its reflection from one side of the filter is silvery, and from the other side, green-yellow. The new Deep Sky II Filter (Visual Only) appears silvery on both sides. Between the Oxygen III Filter and the Deep Sky Filter, the filter that shows the Orion nebula best is the Deep Sky Filter. The Oxygen III Filter will make the daytime sky or fluorescent lights appear green. The reflection from both sides of the filter is green-yellow. The Ultra High Contrast Filter will make the daytime sky or fluourscent lights appear light blue. The reflection from both sides of the filter is silvery. The Hydrogen-Beta Filter will make the daytime sky appear red as seen through it. The reflection from both sides of the filter is
