| Object:
Ngc 5905 & 5908 in a very rich galaxy field in Draco. Telescopes: Luminance: Astrograph 400 f/4 Newton. (3" 1.15x coma corrector up to 1850mm fl). Paramount ME. ASI 6200 MM cmos. Chroma L filter. Color: Astrograph 250 f/4 Newton. Paramount ME. Atik 16200 ccd. Chroma RGB filters. Exposures: L : 223 x 10' ( 37:10 ) R: 56 x 10' ( 9:20 ) G: 63 x 10' ( 10:30 ) B: 69 x 10' ( 11:20 ) Total: 68:20 hours Resolution: 0.42"/pixel. Luminance FWHM after integration: 2.5" (1.94" after deconvolution) Date: March - May 2021 Sites: Luminance: 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 Deconvolution Histogram & Curves adjustments (intensity, saturation) Noise reduction: ACDNR Software: PixInSight |