Nothing to do but reprocess older images, this image of NGC 2467 was taken earlier this year.
I tried some different processes in Photo shop, think it's come up better.
The first image is a full frame processed today.
The second image is the original cropped.
NGC 2467 = 1 hr of data. at ISO 800.
11 darks, 11 flats, 11 bias.
Telescope 8' f/4 astrograph, on HEQ Pro 5 mount, orion mini guider.
Canon 1100D with baader coma corrector.
Median stack inDSS, post processed in photoshop.