Veil Nebula (Cygnus Loop) with an Altair Astro Quad-band filter - Widefield - East Midlands Stargazers
Doncaster Astronomical Society on Twitter: "The Horsehead Nebula - IC434 - taken by DAS member David Mckinstrey SGP, guiding with PHD2 Altair Astro 60mm guide scope ZWO ASI294mc pro CMOS Skywatcher EQ6
Altair QuadBand OSC CCD EOS Filter - APM Telescopes Englisch
Optolong L-eXtreme Filter Review | The Astrophotography Game-Changer
Dual-band, tri-band, quad-band nebula filters - Imaging - Tips, Tricks and Techniques - Stargazers Lounge
Triad Narrowbandfilters - Getting Started With Imaging - Stargazers Lounge
You may have a TriBand or QuadBand filter without knowing it. - Beginning Deep Sky Imaging - Cloudy Nights
Triad Narrowbandfilters - Page 2 - Getting Started With Imaging - Stargazers Lounge
Altair 2" 7nm Dual-Band OSC Filter (Ha & Oiii) | Land Sea & Sky
cheaper Triad filter? - Experienced Deep Sky Imaging - Cloudy Nights
Altair QuadBand OSC CCD 2" Filter
Altair TriBand 1 25" Filter
Eastern Veil with 'Quad-band' filter and ASI294MC - Imaging - Image Processing, Help and Techniques - Stargazers Lounge
Tri-band and other narrow band imaging of emission nebulae with a colour camera – Professor Morison's Astronomy Digest
Duo,tri or quad band filter? - DSLR, Mirrorless & General-Purpose Digital Camera DSO Imaging - Cloudy Nights
Tri-band and other narrow band imaging of emission nebulae with a colour camera – Professor Morison's Astronomy Digest
Pacman nebula - Altair Quadband filter first light - Society for Popular Astronomy
Triad filter from OPT - Page 2 - Experienced Deep Sky Imaging - Cloudy Nights
M42 with Quadband filter - Imaging - Deep Sky - Stargazers Lounge
Altair Astro | Hi all, I'm trying to find out whether anyone here has had a chance to test out the new Altair quad-band filter on a fast scope like a RASA
Hypercam 269C COMBO - QuadBand Filter w Magnetic Filter Holder
NIB Altair Astro Tri-Band 2" CCD filter for OSC narrowband imaging | Astromart
