Shock front in the Pelican nebula. AKA the Elephant nebula
8 Hours exposure (16x30 minutes) with an 18 inch F/4.5 newtonian running at F/8.5 (AP barlow lens)
ST-8XE camera at -30C
Guiding with AO-7 at 2.5 Hz
FWHM between 1.4" and 1.8"
50 nm FWHM Ealing H-Alpha filter
To give a better idea of where this field is, here is an old wide field view of the pelican with the field of the above image highlighted.
