Hi,
Here is a LRGB image of M57 using a 180mm TMB at F9, ST-10XME, and Astronomik H-alpha, 03, and H-beta filters. The LRGB composite was combined using the same sigma clipped stack of 20 H-alpha image for both the L and R components. The G and B components are excluded min/max average stacks of 15 O3 and 15 H-beta images, respectively.
The L component was brightness stretched and sharpened very
aggressively compared to the R,G, and B components. Additional information about the equipment used to create the image and processing is available under the image.
http://www.mlunsold.com/examples/St-10XME/ST10-M57.html
Have a nice day.
Mike
Here is a LRGB image of M57 using a 180mm TMB at F9, ST-10XME, and Astronomik H-alpha, 03, and H-beta filters. The LRGB composite was combined using the same sigma clipped stack of 20 H-alpha image for both the L and R components. The G and B components are excluded min/max average stacks of 15 O3 and 15 H-beta images, respectively.
The L component was brightness stretched and sharpened very
aggressively compared to the R,G, and B components. Additional information about the equipment used to create the image and processing is available under the image.
http://www.mlunsold.com/examples/St-10XME/ST10-M57.html
Have a nice day.
Mike
