The Helix Nebula (NGC 7293)

Posted by plobao
on Thursday, September 2, 2010

by Paulo Lobao


NGC 7293 (aka The Eye of God) is a Planetary Nebula (PN) in Aquarius lying at a distance of about 700 ly from us. One of the most interesting features of this PN are the cometary knots detected at the main ring.

The data to compose this image were collected in four nights (16, 18, 19 and 20 of August 2010) at Muxagata, Portugal (MPC J15). This is a very low object at my latitude (41º N) and I got the data pointing my SCT to  NGC7293 from 22º - 28º altitude.

Photo data:

Telescope: Celestron C9.25 XLT + Focal Reducer at 100 mm (f/D of 6.2)

Mount: ATLAS EQmod

Camera: QSI532WS - M1

Guiding: Orion OAG + Loadstar camera

Filters: Ha-7nm and OIII-8.5nm

Total exposure time : 600 min (Ha: 350 min, OIII: 250min)

CCD Temperature: -15ºC

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