The images on this page where taken through a Hydrogen -alpha filter

    So what is a Hydrogen-alpha filter?

Sh2-311

Horsehead and Flame Nebulae

IC443

Hart Nebula

Soul Nebula

Vail Nebula Complex

NGC281 The Pacman Nebula

NGC1499 The California Nebula

IC2177 Seagull Nebula

M42 The Orion Nebula

NGC 2264 The Cone Nebula

M78, Barnard's Loop, And LDN 1622 The Boogeyman Nebula

IC 405, IC 410, IC 417

SH2-155 The Cave Nebula

NGC1931,IC417,M38

Simeis 147

NGC2174,SH2-247

SH2-232

IC5146 The Cocoon Nebula

M20 The Trifid Nebula

NGC7293 The Helix Nebula

NGC7635 The Bubble Nebula

NGC7380 The Wizard Nebula

NGC1931,IC417,M38

NGC7538

Fox Fur Nebula

M1 The Crab Nebula

The Tadpoles in IC410

SH2-171

B33 The Horsehead Nebula

NGC2237 The Rosette Nebula

NGC 2174 The Monkey Head Nebula

IC 2177

NGC 2024 The Flame Nebula

IC 1848 The Soul Nebula

NGC 2359 Thor's Helmet

Horsehead and Flame Nebulae

NGC1499

LDN1622

M 42