Gum nebulae 21-25

In addition to the GUM nebulae, the image also contains a bit of the Pencil nebula, and IC 2395 and NGC 2670

 

Samyang 135 mm/AM 3 mount/ASIAIR mini/ ZWO ASI 183 MC/ Optolong UV/IR and L Extreme filters

 

RGB -100 minutes of integration ( 5 minute subs) from club dark site

 

DuoBand-L Extreme- from backyard -Bortle 6- 245 minutes of integration (5 minute subs)

 

RGB data processed separately

 

Ha and OIII extracted from duoband in Astro Pixel Processor and processed similarly

 

( stack>BlurX correct>ADBE>starnet++> ghs for nebula, Seti astro star stretch script for stars (RGB only))

 

starless RGB, Ha and OIII combined using NBRGB script in PI

 

Pixelmath to add back RGB stars

 

Done