Abell 12 is a planetary nebula in the constellation of Orion. It is known as the "hidden planetary" nebula because it lies in the glare of 4th magnitude star Mu Orionis. To control the glare I blended luminance data with Ha data.
TARGET Nomenclature: Abell 12 Right Ascension: 06:02:20.0 Declination: +09:39:14.08 Size: 44.1 arc sec Discovery: George Abell in 1966 EQUIPMENT USED Twin APM TMB LZOS 152 refractors 10Micron GM2000 HPS mount Twin QSI6120 CCD cameras Astrodon filters
IMAGE CAPTURE Blue: 10x300" Green: 14x300" Lum: 37x300" Red: 14x300" OIII: 55x300" bin 1x1 Ha: 48x300" bin 1x1 Total Integration: 14.8 hours Pixel scale: 0.265 arcsec/pixel Field radius: 0.188 degrees Capture dates: 24 February - 3 March 2021 Capture location: Fregenal de la Sierra, Spain