I have been collecting data on on CG4 for quite some time. It's in a great spot for me and I collected about 36 hours. 20 hours or so is the Ha data but it was quite noisy until I collected 17 or so hours.
The globule itself is located in Puppis at a distance of around 1300 light years. It is a star forming emission nebula and has the really nice ESO 257-19 galaxy in the field too.
Click here to view the larger image. An annotated image is below the main image. Details of capture below those.