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HDW 2 in Ha OIII, 


            Frank Zoltowski
HDW 2 in Ha OIII

HDW 2 in Ha OIII

Technical card

Resolution: 2392x1744

Astrodon 3nm OIII: 11x900" -25C bin 1x1
Astrodon Ha 5nm Ha 5nm: 20x900" -25C bin 1x1

Integration: 7.8 hours job: 489547

RA center: 47.769 degrees

DEC center: 62.785 degrees

Pixel scale: 0.333 arcsec/pixel

Orientation: -179.424 degrees

Field radius: 0.137 degrees

Locations: Tebbutt Observatory, Edgewood, New Mexico, United States


HDW 2 also known as Sh2-200 is a faint old planetary nebula in the constellation Cassiopeia. This is a closeup of the main body imaged through a 14 inch Meade SCT. As there is a large Ha halo around it, imaging a wider scale can be useful for future projects. There is no SII in the nebula (at least with my setup), hence using just the Ha and OIII in this image. This barely registers above background at f/8 and could use much more data.



Frank Zoltowski
License: Attribution-NonCommercial-ShareAlike Creative Commons

Sky plot

Sky plot


HDW 2 in Ha OIII, 


            Frank Zoltowski