| Object: Messier 65, 66 & ngc3628, Leo Triplet
galaxies. Telescope: Astrograph 250 f/4 Newton . Paramount ME. Atik 16200 ccd. Filters: Chroma LRGB. Exposures: L : 98 x 15' (24:30 ) R: 36 x 10' ( 3:00 ) G: 36 x 10' ( 3:00 ) B: 36 x 10' ( 3:00 ) Total: 33:30 hours Resolution: 1.05"/pixel. Luminance FWHM after integration: 2.7" Date: November 2023 - May 2024 Site: La Sagra Observatory Puebla de Don Fadrique (Spain) - mag 7 professional observatory skies - |
Processing: Bias, Dark & Flat calibration Multiscale background gradient correction SpectroPhotometric Color Calibration MLT linear noise reduction BlurXTerminator GHS and Histogram stretching Starnetv2 for star masks HighDynamicRange Multiscale Transform Color saturation and Curves adjustments Local Histogram Equalization Software: PixInSight |