QSO 2237+0305 Einstein Cross Gravitational Lens


exposed at 22.10.2010


40 % resolution


camera : Alccd6c Pro (QHY8pro)
lens: 12 " f 4 Newton with Paracorr (f / 4.5)
filter : -
exposure software : Astroart 4 / Gain 20 / Offset 126
exposure time : 12 x 5 min (60 min)
location : Home observatory Leopoldshöhe
image processing : Fitswork (image addition, Flat correction) / Regim (color calibration and Background processing) / PS CS3 (final processing)
spezifics : bright moon, high clouds

here you can find the full resolution with comment