The final version "C" used the Narrowband Assistant PI script from
@Alex Woronow :
The "Original" used my usual NB enhancements (GHS and the Dynamic Combination), but it looked too unnatural with that much O-III:
Discussion of GHS aspects of processing:
GHS Forum DiscussionIf you are interested, this is the combination recipe:
Dynamic ComboNote: This also includes Sh2 143 and 147
Sh2 143 HA RGB 
Sh2 147, 148, 149, 152 and 153 H-alpha RGB From GalaxyMap:This HII region, entwined with the star cluster
NGC 7380, contains 4000 solar masses of gas and is ionised by the eclipsing binary star
DH Cephei (O6+O6).
According to a 1994 paper, Sh 2-142 is associated with a molecular cloud containing an additional 6-15 thousand solar masses of gas and is part of the
Cep OB1 association.
Avedisova adds a second ionising star, the B0 Ib supergiant
HD 215806.
This
beautiful nebula has sometimes been called the Wizard nebula. However, its scalloped edges suggest more of a clamshell to me than a wizard!
A very different
wider scale image of the same nebula can be found here. You can also see
infrared version here and a
radio version here.
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