ngc 6888, the crescent or van gogh's ear... 13nm H alpha

one of my first tries at very dim hydrogen alpha imaging... a lot to learn...

20 and 30-minute sub-exposures for a total of 610 minutes, iso 1600, with my Canon 350dG with 13nm filter on the Explore Scientific ED80 apo and AT2FF
acquired, calibrated, and stacked in Nebulosity 2.1.6, post processed with Photoshop CS3.

Guided with the DSI pro I, PHD, and shoestring GPUSB through the Meade 12 inch at f/3.3

enjoy