The following image of NGC 6888 combines the previous Ha image with new OIII data. The OIII data is has definite focus issues, and I think the previous image is better from an aesthetic point of view, but this does show more the OIII portion of the nebula.

The Crescent Nebula (NGC 6888) – Ha/OIII Version 3
The Crescent Nebula (NGC 6888) – Ha/OIII Version 3

Imaging Equipment: WO ZS 80 II ED, DSI Pro II, Razorback Cooler, Baader 7nm Ha filter, Baader 8.5nm OIII filter, WO 0.8x Flattener II
Guilding: Orion 80mm ST, DSI Pro
Mount: CGE

Exposure: Ha (71 10-minutes subs), OIII (67 10-minute subs)

If you would like to see a spectacular image of this nebula, take a look at this image by Ken Crawford.

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