another taken using the Proline 39000M but this time used on an AP155EDF f/7 with 4" flattener
it was a total of 12.5 hours exposure
http://www.narrowbandimaging.com/ngc..._hao3_page.htm
I hope to get to add some more exposure time and add [SII] to it next season. I got started on this late in the season due to the arrival time of the camera
