The Dumbell Nebula, M27 in Vulpecula.
This image is a stack of 8 four minute exposures shot through a Hydrogen-alpha filter.
The exposures were acquired using an SXV-H9 CCD camera on a Tele Vue NP-101 4" f/5.4 refractor.
The exposures were calibrated and stacked using AIP4WIN V2.
This image has been resampled down from its original size of 1392x1040.