OPTOLONG 1.25" H-ALPHA 7nm FILTER

This tiny marvel has saved lots of my Astrophotography time, and has produced the excellent results. I photograph from my backyard that falls in Bortle 8-9 zone. It has helped me to photograph Hydrogen rich nebulas like Horsehead, Heart, Orion, Elephant nebula etc. without wasting much time, and loosing any information due to light pollution. I strongly recommend this tiny filter, and its comparatively cheaper too. Attached is the sample 300 seconds single picture of Horsehead nebula shot using ASI224MC (gain 200)on Sky-Watcher StarTravel 102, using this HA filter.