In the second half of August I spent five nights on the planetary nebula Abell 80 (PK102-05.1), which is a bit larger than two arcminutes.
The conditions were changeable, two nights were very good by city standards, the other three were impaired by moon, thin clouds or dew on the corrector plate.

In addition to Ha and OIII, I also took a short RGB sequence to colour the stars.

Taken from my rooftop terrace in Berlin with a 10" Meade ACF at 2050mm focal length (CCDT67 Reducer) on a G11 mount, ASI1600MMcool camera, 125x5 minutes Ha, 95x5 minutes OIII and 9x30 seconds each for RGB.

I have attached a version that is downsized to 50% and slightly cropped, image scale is 0.76"/pixel.

As OIII is weak I also attach a comparison of both channels. There you can see that OIII is present, but it has a "hole" at the same place as Halpha. This is different from M57, where the hole in the Ha channel is filled by OIII.
The comparison shows the unedited stacks in full size (0.38"/pixel).

Attached Thumbnails

   

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Stefan