Filters

Tele Vue Bandmate H-Beta Filter The Tele Vue Bandmate H-Beta Filter passes the aqua colored hydrogen-beta emission lines found in the Horsehead, Ca...

Pegasus Astro Photographic Filter - S2 2'' Mounted Photographic Filter Sulfur II (SII) filters are a narrow-band-filters for CCD/CMOS photography....

Pegasus Astro Photographic Filter - OIII 2'' Mounted Filter The Oxygen III (OIII) CCD 7nm filter is designed for nebula observation allowing 7nm b...

Pegasus Astro Photographic Filter - Ha 2'' Mounted Filter This narrowband filter has a 7nm bandwidth of light centered on a wavelength of 656nm th...

Pegasus Astro LRGB Photographic Filter Parfocal LRGB Filters Broadband filters are parfocal which ensures that you will not have to refocus when yo...

Optolong SII 6.5nm Imaging Narrowband Filter Optolongimproved narrowband SII6.5nm filter (Sulful II for CCD) is designed for nebula observation all...

Optolong SHO 3nm Narrowband Filters Kit Optolong SHO-3nm Narrowband Filters Introduction Optolong SHO-3nm filter kit includes SII 3nm, H-Alpha 3nm,...

Optolong Night Sky H-Alpha filter Night Sky H-Alpha filter (IR Pass 650nm) with 50% transition from blocking to passing at about 640nm and 95% or a...

Optolong ND3.0 Neutral Density Filter Neutral Density (ND) filters are designed to reduce transmission evenly across a portion of a specific spectr...

Lunt 50mm Ha Etalon Filter The Lunt LS50FHa Solar Filter is a 50 mm aperture (no central obstruction) integrally tuned etalon for use on Lunt ED Re...

Optolong Narrowband H-Beta filter Opotlong narrowband H-beta filter is designed for nebula observation allowing 12nm bandwidth of light centered on...

Lunt Polarizing Filter for White Light Wedges When doing visual work with Lunt White Light Wedges, we recommend adding a Lunt Polarizing Filter for...

Optolong Moon & Skyglow Filter Optolong Moon & Skyglow filter is designed to darken the background sky by blocking light transmission from ...

Optolong LRGB Filter Set The Optolong LRGB Filter Set is designed for maximum contrast and with extremely high gradients for clear differentiation ...

Lunt 100mm Ha Etalon Filter The Lunt LS100FHa Solar Filter is a 100 mm aperture with a Root 3 non-centralized obstruction  integrally tuned etalon ...

Optolong IR Pass685 Planetary Filter Optolong IR Pass 685nm filter is designed to block wavelengths below 670nm and can be used in IR-LRGB imaging ...

Optolong Improved OIII 6.5nm Narrowband Filter Optolong improved extra Narrowband OIII-CCD 6.5nm filter is designed for nebula observation allowing...

Optolong NB Filters SHO 6.5nm Narrowband Filter Kit Optolong SHO6.5nm filter kit includes SII6.5nm, H-Alpha7nm, and OIII6.5nm narrow-band filters, ...

Optolong H-Alpha 7nm Narrowband Filter Optolong improved version of H-Alpha 7nm filter is the popular narrowband filter allowing 7nm bandwidth of l...

Optolong CLS (City Light Suppression) Broadband Filter 1.  Optolong CLS Introduction The CLS (City Light Suppression) broadband filter is designed ...

Optolong Clear Sky Filter Screw on Lens 1. Optolong Clear Sky Filter Introduction A screw on filter with the easiest installation way like UV fi...

Lunt White Light Solar Wedge For solar white light imaging and white light visual observing. The Lunt White Light Wedges come with a built in ND3 f...

IDAS SHO Narrowband Set (SII, H-a & OIII) IDAS H-alpha 6.8nm. OIII 6.0nm and SII 6.3nm Sets. Available at various sizes and classifications –...

IDAS NB3 Nebula Booster Filter OIII & SII The IDAS NB3 Nebula Booster Filter is a dual line-pass filter (OIII & SII) which can be used with...

IDAS NB2 48mm mounted Nebula Booster Filter H-alpha & OIII The IDAS NB2 Nebula Booster Filter is a dual line-pass filter (H-alpha & OIII) w...

IDAS Mars filter 1.25" IDAS planetary imaging filters are specialized filters designed with tuned passbands intended to enhance features of specifi...

IDAS LPS-V4 Nebula Filter The IDAS LPS-V4 Nebula Filter is designed to provide maximum contrast between key astronomical emission lines and a light...

IDAS LPS-D3 filter (Discontinued) This filter is no longer available. It has been replaced by the LPS-C1 IDAS LPS-D3(formerly NGS1) filters enhance...

Daystar UV/IR Cut 2" The Daystar UV/IR Cut 2″ reduces the heat load on your filter assembly by absorbing or reflecting UV and/or I light and transm...

Daystar Sodium D-Line Quark Filter This new, All-In-One design marries high quality components of a telecentric barlow, adapters, snouts and Daysta...

Daystar Quark Prominence H-alpha Filter The Daystar Quark Prominence H-alpha Filter marries high quality components of a telecentric barlow, adapte...

Daystar Calcium H-Line Quark Filter This All-In-One design marries high quality components of adapters, snouts and Daystar calcium filter into one ...

Daystar Quark for Questar H-alpha Filter (Chromosphere or Prominence) Chromosphere: The Daystar Quark Chromosphere for Questar H-alpha Filter is fo...

[latexpage] Daystar Energy Rejection Filter ERF for SCT The Daystar Energy Rejection Filter for SCT reduces the heat load on your filter assembly b...

Daystar Energy Rejection Filter ERF for Refractor The Daystar Energy Rejection Filter for Refractor reduces the heat load on your filter assembly b...