Object  M8- The Lagoon Nebula

M8 Nebula is located in the constellation of Sagittarius and is visible to the naked eye. Encompassed within the nebula, on the eastern side of the dark rift is Ngc 6530, a cluster of about 25 stars of 7th mag. and fainter,  formed recently from the surrounding gas. On the other side of the rift is a dominated by two main stars, the brighter of which is the blue- white super giant 9 Sagitarii @ mag. 6. Located approximately 5,200 L.y. away.

Date Ha- 25/5/ Lum-7/ 6/ & RGB data 13/ 6/ 2010
Location BayTop Observatory- Streaky Bay South Australia
Instrument Home built 10" Newtonian (Bob Royce primary) and an Antares 1/20th wave secondary with MPCC coma corrector. System working @ native f4/ 1016 FL  1.485 arcsec/pixel- FOV  51.2x51.2
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 Ha: 52' ( Selectively used to enhance Bok globules & HII areas. (4' subs unbinned)

L: 78 R:30G:30B:30' [3' sub exposures all unbinned]   No dark frames/ Flats removed.

Guiding  ST80 refractor F5 with a Starlight Xpress HX516 CCD. Mounted via a side by side accessory plate.                    
Filters Astronomik typeII clr  RGB filter set
Notes/ Conditions

 Conditions- Taking the Lum the seeing was a little average with heavy due, transparency was also average. Taking the colour channels conditions were quite poor. Numerous runs to acquire useable data. Vignetting to corners causing poor illumination. Slight misalignment with MPCC in the imaging train. Future purchase of a Televue Paracorr and Astronomik 48mm filters to avoid these problems. Subs were regulated to -15* degrees temperature.