| Object: Messier
1, supernova remnant in Taurus. Telescope: H-alpha, OIII: Astrograph 400 f/4 Newton. Paramount ME. ASI 6200. Chroma Ha 5nm & OIII 3nm filters. Color: Astrograph 250 f/4 Newton. Paramount ME. ATIK 16200. Chroma RGB filters Exposures: H-a: 40 x 20' ( 13:20 ) Oiii: 48 x 20' ( 16:00 ) R: 40 x 10' ( 6:40 ) G: 40 x 10' ( 6:40 ) B: 40 x 10' ( 6:40 ) TOTAL: 49:20 hours Resolution: 0.42"/pixel. FWHM after integration: Ha 1.9" Date: January - March 2021 Site: H-alpha, OIII: Sagan Observatory Las Rozas (Spain) - mag 4.5 suburban skies - Color: La Sagra Observatory Puebla de Don Fadrique (Spain) - mag 7 professional observatory skies - |
Processing: Bias, Darks & Flat calibration DBE Photometric Color Calibration Histogram & Curves adjustments ArcSinhStretch Starnet for star masks Noise reduction: ACDNR Software: PixInSight |