Rosette Nebula in the Hubble Palette (Martin_Heigan) Tags: rosettenebula widefield hubblepallete hos hst caldwell49 ngc2237 openstarcluster hydrogenalpha oxygeniii ha oiii narrowband sgp pi astronomy astrophysics astrograph telescope gso newtonian reflector martin heigan astrophotography celestron avx nebula bicolor bicolour deepskyobject dso space science physics canon 60da mhastrophoto october2016 sequencegeneratorpro pixinsight astroimaging pixelmath astrometrydotnet:id=nova1942341 astrometrydotnet:status=solved flickrexplore explore astrometry hubblepalette electromagneticspectrumoflight nm light wavelength ir spectrum spectralline spectra photography amateurastronomy backyardastronomy southafrica africanskies southernskies africa sterrekunde caldwell50 lightyears milkyway ngc2238 ngc2246 deepspace ngc2244 hydrogen mheiganmostviewedphotos