Object  NGC4038- 9- The Antennae
Info

NGC 4038 and NGC 4039 are 2 'peculiar' spiral galaxies colliding together. They are known as the Antennae due to both their long tails. The object is 11 magnitude and lies in the constellation of Corvus near the border with Crater. It is one of the closest pairs of galaxies influencing each other. It's estimated distance is around 90 million L.y.

Date Lum-14th / RGB 23rd / 1/ 07
Location BayTop Observatory- Streaky Bay South Australia
Instrument Home built 10" Newtonian (Bob Royce primary) with MPCC coma corrector. System working @ native f4/ 1016 FL  1.35 arcsec/pixel- FOV  23.3x29.4
Mount Celestron CI700 controlled by a Mel Bartels Goto Control System with Vexta PK264m-01b motors with a pulley and belt system
Camera (CCD) Starlight Xpress HX916 monochrome with Atik manual filter wheel.
Exposures L: 70' R:18' G:18' B:18' [1' sub exposures all unbinned]   No dark frames removed. Extinction factors applied .
Guiding  None
Filters Astronomik typeII clr rgb filters
Notes/ Conditions

 Conditions- Taking the lum conditions were very good. Transparency  allowed me to push sharpening to the object. Taking the colour channels the seeing was poor to average due to the wind buffetting things around and the transparency average.  This area of sky gives me quite severe gradients due to the brightness of the Milky Way over head.

Gradients were removed by PixInsight Le's Background Extraction routine.