Tested these data with the three processing approaches.
The "Original" version used the Narrowband Assistant PI script from
@Alex Woronow .
B&C use two completely different techniques but start from the same Dynamic Combo image treated with Topaz Denoise.
General Hyperbolic Stretch 2.2.2 (GHS) from the PI respository was used to get the NB images all approximately the same stretch to make up for the weak O-III signal.
GHS Forum DiscussionThis is artificial and not like the NB Assistant Image. If you are interested, this is the Dynamic Combo combination recipe:
Dynamic ComboB relies on Photoshop techniques with the High Pass Filter tuned to those area. It is then masked, and the mask removed to highlight those areas against the more blurred denoised image.
C takes the same denoised image and goes with
Topaz Studio2, what Alex likes to use, specifically the AI Clear and Dehaze filters, the later doing the most.
From GalaxyMap (I do not think this area has a common name):This expanding shell of gas and dust was created by the original star cluster at the heart of the
Cep OB4 association, which has now dispersed. It is now lit and ionized by the young star cluster
Berkeley 59 (forming the bright nebula called
Cederblad 214) and it is expanding into the fainter diffuse nebula
NGC 7822. Berkeley 59 is surrounded by another dark region of disturbed gas and dust containing the radio source
W1.
GENERAL NOTE ON SHARPLESS2 OBJECTS>>>>>>>>>>>>>There are 313 Sh2 objects. All now imaged.
This is my collection:
Sharpless2Wide-Angle Hydrogen Alpha Nikon Image Sh2 79-171Please note there is also a Sharpless2 Group with now more than 2700 examples.
Sharpless2 GroupOther useful links include:
Gary Imm's CollectionGalaxyMap's CollectionThe Sharpless CatalogThe MDW H-alpha Sky SurveyReiner Vogel's detailed observing catalogHope you enjoy these obscure but interesting objects...
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