Celestron AVX + Skywatcher Esprit 80 + ZWO ASI1600MM-C + ZWO RGB filters + Astrodon 3nm Ha filter
30x 120s Ha (as luminance), 39x 60s R, 40x 60s G, 31x 60s B
Processed in PI, PS (colour) and Lightroom (final adjustments)
v2.2: reprocessed RGB to apply another round of background extraction, using many large points, to remove the more complex gradients, particularly in the blue channel. Combined using the HaRGB combination script, putting 66% of Ha into R and 33% of R into Ha. Blended the resulting two images using lighten mode.
v2.5: removed green tint from background (BackgroundNeutralisation), applied sharpening (Unsharp), contrast boost (LocalHistogramTransformation) and improved star core colours (Noel's actions)
v2.7: addition of 50 minutes of additional colour data and reprocessed to blend v2.5 with the new colour version (unpublished v2.6)