The bright orange feature is the planetary nebula, NGC 40.
Reference information. CTA1 is also called G119.5+10.3 and G119.5+10.2
View full sized image of CTA1 G119.5+10.2 / G119.5+10.3
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This image contains the optical counterpart of a supernova remnant
This image was autoguided using my homemade off axis guider with Lodestar.
Imaged with my homemade telescope mount
Exposure Details :
Baader 8nm OIII 16x1500s on 90 @ F4 f.l. 409 with Atik 490 camera
Astrodon 3nm Ha 20x1500s on 90 @ F4 f.l. 409 with Atik 490 camera
Equipment:
Curdridge Observatory, Southampton,UK