Sky's Up Global Astronomy Magazine Volume III (September 2021) | Page 35

HIGH-RESOLUTION WHITE LIGHT ( CONTINUUM ) IMAGING
COURTESY OF Pedro Ré
COURTESY OF Pedro Ré ral options )
COURTESY OF Pedro Ré
1 . Acquire high resolution High- Resolution WL images 2 . Save AVI files ( 8 bits ) or SER files ( 12 bits ) 3 . Open AVISTACK http :// www . avistack . de / or AUTOSTAKKERT http :// ww . autostakkert . com / 4 . Select AVI or SER files - Open movie ( Avistack ) 5 . Turn off Update display ( Avistack ) 6 . Choose Batch processing 7 . Open REGISTAX http :// www . astronomie . be / registax / 8 . Open FIT file ( aligned and stacked in Avisatck ) 9 . Process the stacked image using Wavelet-based image restoration algorithms 10 . Reset the Wavelet filter ( 500 to 1000 center value ) Wavelet Tab ( Figure 7 ) 11 . Use layer 1 , 2 and 3 of Wavelet filter - Gaussian ( try several options ) Wavelet-based image restoration ( Figure 8 ) 12 . Process image ( DO ALL button ) ( Figure 9 ) 13 . Save image ( 16-bit TIFF file ) Save TIFF 16-bit 14 . Process TIFF file in Photoshop 15 . Use Smart Sharpen ( Figure 10 ) 16 . Use Curves to adjust contrast and brightness ( Figure 11 ) 17 . Use False Colour Mapping ( Figure 12 ) 18 . Save the final 16-bit TIF file ( no compression ) 19 . Convert to 8-bit and save JPG file ( no compression )