Jim Burnell's CCD Images - NGC6979 in Hydrogen-alpha Light
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Hydrogen-α
NGC6979 in Ha
Object: NGC6979
Pickering's Triangle
Emission Nebula
 Const.: Cygnus
Camera: SXV-H9 Scope: Tele Vue Genesis SDF Mount: Losmandy Titan
Filter(s): Hα Exposure: 7x8m TeleVue 0.8x Focal Reducer
A section of the Veil Nebula, NGC6979, a supernova remnant in Cygnus. This is one of the central sections, known at "Pickering's Triangle". This image is a stack of 7 eight minute exposures shot through a Hydrogen-alpha filter. The exposures were acquired using an SXV-H9 CCD camera on a Tele Vue Genesis SDF 4" refractor equipped with a 0.8x focal reducer, yielding an effective focal length of 430mm. This image was shot with a bright moon in the sky. The exposures were calibrated, defect-corrected and stacked using AIP4WIN. This image has been resampled down from its original size of 1040x1392.