Years ago I noticed faint red nebulosity in a deep widefield by Hiro below Alpha Centauri. Last night I centred on Beta Circinus and collected some data.
Exposures 12x16 minutes in 3nm NII.
Full resolution image 6MB
http://d1355990.i49.quadrahosting.co.../BCIRC_NII.jpg
There is more around here. Does anyone know if any of this has any designation. What is that ball of string thing?
I will get some OIII, SII and HA data.
Bert