Repeating one more of the Sharpless2 Group to see what my new CMOS system can find with GHS.
Used the Dynamic Combination Recipe which really emphasized the O-III. On paper this requires S-II but I just duplicated the H-alpha and relabeled it S-II.Seemed to work to isolate the O-III.
Previous version of SH2 129.
Sh2 129 OU4 The Giant Squid Discussion of GHS aspects of processing:
GHS Forum DiscussionIf you are interested, this is the combination recipe:
Dynamic ComboFrom GalaxyMap:
[Only refers to H-alpha]Sharpless notes that this large faint nebula is part of the
Cep OB2 association and the Cepheus bubble.
Avedisova lists 5 B-class ionising stars.
Sometimes called
the Flying Bat nebula. This image only shows part of this nebula.
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...I have always been interested in the dull O-III component here so I decided to try to apply Dynamic Combination, which emphasizes O-III and General Hyperbolic Stretch (GHS) which emphasizes dull signals.
Discussion of GHS aspects of processing:
GHS Forum DiscussionIf you are interested, this is the combination recipe:
Dynamic Combo
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