Jonckheere 320 (J320, PK 190-17.1, PN G190.3-17.7) Planetary Nebula in Orion. Taken over several
nights in Jan. 2013. Imaged with CCD Labís Q285M camera and a Celestron EdgeHD 9.25 at f10, on a
Losmandy G11/Gemini mount. This image is cropped and upsampled from the original. The OIII and
H alpha subframes were 15 minutes binned 1x1, while the RGB subframes were 4 minutes binned 2x2
resulting in the following total exposures (OIII+HA):(R+Ha):(G+OIII):(B+OIII) (min) = (270+240):
(52+240):(52+270):(52+270). Captured with Nebulosity, calibrated, sigma combined in Iris with other
processing using PixInsight LE and Photoshop CS. North is up.
This image was published in Astronomy Now, Vol 28, No. 1 (Jan. 2014), p59 and also
Astronomie Magazine, No. 184 (Dec. 2015), p60.