M13 from the Forest of Dean.
This Image of M13 was taken under partly clear sky conditions through high thin Cirrus clouds with stars only visible down to about magnitude 4. I captured 60 second 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 time was 30 minutes using a H Alpha filter, 30 minutes using an O111 filter and 15 minutes using a blue filter.
