Tribute to Alnitak -- Lo Stellone che interferisce 

Nikon D300, Nikkor 400mm f5.6 lens, EQ5 goto mount
ZWO ASI 224 MC, ASI miniscope 120 f/4, guiding software PHD2 (not giuided)
4" ISO 800
128 lights, 31 darks, 31 biases, 31 skyflats
image processed with
- SIRIL old version 0.9.12 (calibratrion, registration, integration, stacking for the Master Light)
- PixInsight (linear processing, color balancing, deconvolution, histogram and curve transformations of the Master Light)
- GIMP (cosmetic, layers, layer mask, blending operation and other infinity of "finesse")

Наука