Saturday 1 May 2021

M109

This image was taken with my 10 inch f/4.8 reflector, a Vixen Atlux mount, PHD auto-guiding and an Atik 383L mono CCD camera.

I captured five minute sub frames with matching dark frames and combined them with flat field frames to reduce the effect  of vignetting in the final image.

The total exposure times were 60 minutes using an IDAS filter for luminance. For colour data, the camera was set to x2 bin mode with exposure times of 25 minutes using a H-alpha filter, 20 minutes using an OIII filter and 15 minutes using a blue filter.

M109