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Contains:  NGC 6188, NGC 6193, NGC6188, NGC6193, PK336-01.1, Rim Nebula
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NGC 6188 - The Fighting Dragons of Ara (Bicolor), 


            Ariel Cappelletti
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NGC 6188 - The Fighting Dragons of Ara (Bicolor)

Technical card

Dates:July 13, 2020July 14, 2020

Optolong H-alpha 7nm 2": 71x180" (gain: 139.00) -25C bin 1x1
Optolong Oiii-CCD 6.5 nm 2": 70x180" (gain: 139.00) -25C bin 1x1
Optolong SII-CCD 6.5nm 2": 70x180" (gain: 139.00) -25C bin 1x1

Integration: 10.6 hours

Darks: ~100

Flats: ~41

Avg. Moon age: 23.05 days

Avg. Moon phase: 40.45%

Bortle Dark-Sky Scale: 9.00 job: 3709676

RA center: 16h 39' 31"

DEC center: -48° 38' 47"

Pixel scale: 0.721 arcsec/pixel

Orientation: 64.790 degrees

Field radius: 0.569 degrees

Resolution: 4508x3430

Locations: Casa, Córdoba Capital, Córdoba, Argentina

Data source: Backyard


Hi Everyone, I want to share this Bicolor version of The Dragons of Ara. For this one, I did not use a strictly bicolor HOO palette, instead I mixed a little bit of Sii in R and G channels for more chromatic richness.

The color mapping was: R:Ha*0.7+Sii*0.3, G:Sii*0.2+Oiii*0.8, B:Oiii

I hope you enjoy it, clear skies!



Ariel Cappelletti
License: None (All rights reserved)

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NGC 6188 - The Fighting Dragons of Ara (Bicolor), 


            Ariel Cappelletti