Filters

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

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 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 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 HEUIB-II H-alpha Enhanced UV/IR Cut Filter The IDAS HEUIB-II (H-α Enhanced UV IR Blocking) filter is designed for enhanced spectrum DSLR's and...

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 Combo Quark Prominence H-alpha Filter The Daystar Combo Quark Prominence H-alpha Filter marries high quality components of adapters, snouts...

Chroma LRGB Individual Filters You have the option to buy Chroma LRGB filters individually. The Lum, Red, Green & Blue filters are also availab...

Chroma LoGlow Light Pollution Filter The Chroma LoGlow Light Pollution Filter blocks common spectral lines from lighting sources. This filter provi...

Baader U-Venus-Filter (350nm) Baader U-Filter (Venus and UV) 350nm. Transmission peak approx. 80% at 350nm, bandwidth 60nm (320-380nm), comple...

Chroma Jovian Methane Filter The Chroma Jovian Methane Filter is a methane absorption band filter. This filter enhances contrast when imaging objec...

Chroma HaLRGB Filter Set The Chroma HaLRGB Filter Set includes five individual filters: 8nm H-alpha, luminance, red, green and blue. They are avail...

Chroma Clear Filter The Chroma Clear Filter has an average transmission greater or equal to 97% across the 380-1000nm range. Chroma Technology is a...

Chroma Bessel UBVRI Individual Filters The Chroma Bessel UBVRI Filters are made for photometric imaging in five different bandpass. They are availa...

Chroma Bessel UBVRI Filter Set U-Bessel: UV photometric filter in UVBRI seriesV-Bessel: Green (Visible) photometric filter in UVBRI seriesB-Bessel:...

Chroma 8nm SII Filter The Chroma 8nm SII Filter isolates the spectral emission of singly ionized sulfur atoms, also common in nebulae. Emission is ...

Chroma 8nm OIII Filter The Chroma 8nm OIII Filter isolates the 500.7nm primary emission line of doubly ionized oxygen. After H-alpha, this is the n...

Chroma 8nm H-alpha Filter The Chroma 8nm H-alpha Filter is essential for imaging nebulae and other objects which are rich in ionized hydrogen. At 6...

Chroma 5nm SII Filter The Chroma 5nm SII Filter isolates the spectral emission of singly ionized sulfur atoms, also common in nebulae. Emission is ...

Chroma 5nm OIII Filter The Chroma 5nm OIII Filter isolates the 500.7nm primary emission line of doubly ionized oxygen. After H-alpha, this is the n...

Chroma 5nm H-beta Filter H-beta filters are also useful for imaging nebulae and objects rich in ionized hydrogen. At 486.1nm, a narrow-band filter...

Chroma 3nm H-Beta Filter H-beta filters are also useful for imaging nebulae and objects rich in ionized hydrogen. At 486.1nm, a narrow-band filter...

Celestron Light Pollution Filter RASA 8" Light pollution in the night sky can significantly degrade contrast in astronomical images. This is especi...

Celestron Light Pollution Filter RASA 11" Get the most out of your Celestron Rowe-Ackermann Schmidt Astrograph 11, even under light-polluted skies,...

Baader UBVRI Bessel U-Filter - Photometric Baader Bessel-UBVRI Bandpass Filter Set, suitable from f/15 to f/1.8 Classic photometric filters with t...

Baader UBVRI Bessel R-Filter - Photometric Baader Bessel-UBVRI Bandpass Filter Set, suitable from f/15 to f/1.8 Classic photometric filters with t...

Baader UBVRI Bessel I-Filter - Photometric Baader Bessel-UBVRI Bandpass Filter Set, suitable from f/15 to f/1.8 Classic photometric filters with t...