| Object: Abell 8, planetary nebula in Auriga. Telescopes: H-alpha, OIII: Astrograph 400 f/4 Newton. Paramount ME. ASI 6200. Chroma Ha 5nm & OIII 3nm filters. Color (stars): Astrograph 250 f/4 Newton. Paramount ME. ATIK 16200. Chroma RGB filters. Exposures: H-a: 137 x 20' ( 45:40 ) Oiii: 68 x 20' ( 22:40 ) R: 16 x 5' ( 1:20 ) G: 16 x 5' ( 1:20 ) B: 16 x 5' ( 1:20 ) TOTAL: 72:20 hours Resolution: 0.42"/pixel. FWHM after integration: Halpha 1.9" Date: September 2021 - February 2023 Sites: 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, Dark & Flat calibration DBE SpectroPhotometric Color Calibration BlurXTerminator Starnetv2 for star masks Histogram stretching Color saturation adjustments ACDNR noise reduction Software: PixInSight |