NGC6781 is a well known beautiful planetary nebula in the constellation of Aquila. With an apparent diameter of about 120" its brightness is 11.4 mag.
The now 100.000°C hot central star with 0.6 sun masses has the main emissions in the far UV. It was earlier a red giant. You can see it visually with a 6inch or even bigger instrument.
It was discovered in 1788 by William Herschel
RA: 19h 18m 28s
Dekl.: +6° 32′ 19,3"
Ha-OIII-RGB (Ha,OIII 12x40m each, RGB 10x20m each), total integration time 26h, Seeing 0.7-1.2 arc-sec
80cm f/7 Astrooptik Keller corrected cassegrain, FLI Proline 16803, Baader Filters RGB, Astrodon filters NB, Prompt 7 CTIO/UNC Chile, remote controlled
image processing: Bernd Flach-Wilken
here you have a look of 40% of the whole CCD-field.For full resolution,click on the image!
here is a close-up of NGC6781:
here you can take a look through the 3,6m LaSilla ESO telescope