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Derek Santiago | all galleries >> Galleries >> Planetary Nebulae and SN Remnants > HDW2
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Hartl-Dengl-Weinberger 2 is a faint and old planetary nebula in Cassiopeia. It is also known as Sharpless-200. It has a very faint extended Halo which is nearly 40' making one of the larger planetary nebulae. The halo extends into a small open cluster, Trumpler 3. Battling a near full moon, light pollution, poor seeing, wind and clouds, it was a challenge to pull this one from the muck. It required eight hours of 30 minute Ha subs and 6hours of OIII over four evenings.

Imaging Camera: QSI540wsg
Imaging Scope: SVR90T
Guide Camera: SX Lodestar
Mount: Avalon M-Uno
Filters: Astrodon 5nm Ha, OIII
Exposure: 14 hours (30 minute subs)
Processing: CCD Stack and PS CS2
Date: October 2014 Location: My front driveway. Morristown, NJ

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