| Object: Ngc
7293, the Helix planetary nebula in Aquarius. Telescope: Astrograph 250 f/4 Newton. Paramount ME. Artemis 4021 ccd. Filters: Baader HORGB. Exposures: H : 105 x15' (26:15 ) O: 60 x 15' (15:00 ) R: 36 x 10' ( 6:00 ) G: 36 x 10' ( 6:00 ) B: 36 x 10' ( 6:00 ) Total: 59:15 hours Resolution: 1.1"/pixel Halpha FWHM after integration: 3.2". Date: July 2020 - January 2021 Site: La Sagra Observatory Puebla de Don Fadrique (Spain) - mag 7 professional observatory skies - |
Processing: Bias, Darks & Flats calibration Photometric Color Calibration Deconvolution Histogram stretching HDRMT Dynamic range transformation Saturation & Curves adjustmen Software: PixInSight |