|Object||Ngc 2004, 2011, 2014, 2040, 2029 & 2032|
This image shows multiple objects that are very close to the Large Magellanic Cloud in the constellation Dorado. Ngc 2014 (Henize 55) contains a cluster of hot, young stars, almost hidden in the brightest part of the nebula. The energetic ultraviolet light from these stars is absorbed by hydrogen and produces the distinctive red glow from an enormous distance around the cluster. These massive young stars also produce vigorous stellar winds, the effect of this can be seen by the shock waves that billow out like bubbles. To the immediate left of this is.NGC2020, is produced by one star at its center; the interesting colour of the 'bubble' is formed by doubly ionised oxygen (or OIII) emission, which many Wolf Rayet nebulae include such as Thor's Helmet and the Crescent Nebula. Left of center is is Ngc 2040, another eye catching & interesting emission nebula. The striking blue globula cluster to the top R/H corner is Ngc2004.
|Date||Ha-17/10/11: Lum- 29 / 10 11: & RGB 19 /11/11|
|Location||BayTop Observatory- Streaky Bay South Australia|
|Instrument||Home built 10" Newtonian (Bob Royce primary) and an Antares 1/20th wave secondary with Televue Paracorr coma corrector. System working @ f4.6 (native F4/ 1016 FL) 1.315 arcsec/pixel- FOV aprox 44.6x44.6|
|Mount||Celestron CI700 controlled by the SiTech servo Goto Control System with Pittman 8000 series motors. Pulley and belt system|
|Camera (CCD)||Starlight Xpress SXVR-H16 monochrome with Starlight Xpress USB filter wheel.|
|Exposures||L: 119' Ha: 120' R: 70' G: 70 B: 70' [10.8hours- LRGB-7min : Ha-10' sub exposuresall unbinned) Flat field and bias frames subtracted: .|
|Guiding||SX OAG with a Starlight Xpress Lodestar guide cam.|
|Filters||Astronomik typeII anti halo L (clear) RGB 2" filter set|
Conditions- Average seeing and transparency when taking the lum & Ha. .When taking the colour set, the evening was also average, with moments when the guide star faded.