Continuing my Spectroscopy experiments. This is listed as a planetary nebula called Campbell's Hydrogen Star. Its spectrum looks like no other spectrum of a planetary nebula I have seen.
The central star consists of a carbon Wolf-Rayet star with a hydrogen envelope of hot gas. On the chart below I have marked the obvious hydrogen balmer lines in red. Other annotations in purple indicate lines that I am guessing at. ;-)
I have compared the field with the DSS plates and I am fairly confident that the spike at 5707Å is due to a field star.
References Swings & Struve and Aller and Hyung.
The object is also known as BD+30 3639.
Captured in k3ccdtools. Stacked in Registax. Saved as TIFF. Open in photoshop and rotated and cropped. Saved as Tiff. Open in IRIS and saved as FITS. FITS opened in analysed in VSpec
Exposure Details :
StarAnalyser 27x10s on 200mm @ F5 with SC3.5
Curdridge Observatory, Southampton,UK
Spectroscopy and vspec tutorial
NGC 7027 - Another spectrum of a planetary nebula