Lumicon

Lumicon's Filter Range and What Each Reveals

Every filter here works by rejecting wavelengths rather than adding light, so the effect depends on whether your target emits in a narrow band or across the spectrum.

• UHC filters: Pass the main nebula emission lines together, giving the broadest useful contrast gain across emission nebulae. The best first filter for most visual observers.
• OIII filters: Very narrow, isolating doubly ionized oxygen. Dramatic on planetary nebulae and supernova remnants, and dim enough that it wants aperture behind it.
• H-beta filters: A specialist filter for a short list of targets, most famously the Horsehead and California nebulae, where it makes an otherwise very difficult object attainable.
• Deep Sky and broadband filters: Milder light pollution rejection that keeps stars looking natural, suited to galaxies and clusters where narrow filters do not help.
• Comet filters: Tuned to the emission bands of cometary gas, enhancing tail structure against sky background.
• Visual accessories: Off-axis guiders, filter holders and adapters from the wider Lumicon catalogue.

Why Choose David Astro for Lumicon

Nebula filters are easy to buy in the wrong strength for the telescope you own.

• Aperture matched: An OIII filter in a 4 inch telescope leaves very little light. We recommend filter strength against your aperture so the view is enhanced rather than merely darkened.
• Target-based selection: Galaxies and star clusters gain nothing from narrow filters. We will tell you when a filter is the wrong solution for what you want to see.
• Authorized dealer: Genuine Lumicon filters with verified coatings and full manufacturer warranty, stocked domestically and ready to ship.
• Barrel sizing: We confirm 1.25 inch or 2 inch fit against your eyepiece set and diagonal before you order.
• Ships from Canada: No duties or brokerage fees for Canadian orders.

Lumicon in Canada — Frequently Asked Questions

UHC or OIII for a first nebula filter?

UHC. It works on a much wider range of targets and dims the view less, which matters in apertures under about 10 inches. Add OIII later specifically for planetary nebulae and supernova remnants.

Will a nebula filter help with galaxies?

No. Galaxies emit across the spectrum, so a narrow filter removes as much galaxy light as sky light. A mild broadband filter can help marginally under heavy light pollution; dark skies help far more.

Is an H-beta filter worth buying?

Only if the Horsehead, California Nebula and a handful of similar targets are specifically what you want. It is a superb filter with a very short target list.

Do visual filters work for imaging?

Visual nebula filters can be used for imaging but are generally wider than dedicated imaging narrowband filters and are not designed for fast focal ratios. For imaging, use purpose-built narrowband.

Choosing a nebula filter?

Tell us your aperture and your target list and we will recommend the right one. Canadian stock, worldwide shipping.