Thor's Helmet

 

 

 

Equipment set-up

RCOS 14.25 Ritchey Chretien

SBIG STX16803

Software Bisque

Paramount PMEII

 

Data capture CCDops, Calibration MaxIm CCD, Processing PixInsight, Photoschop CC 2020

Exposure Ha 50minutes

Copyright Peter J Ward 2020

Can you see all 26 grey scales above?