Object: M20 - Nebula in Sagittarius, "The Trifid Nebula" Date: May 27, 2001 for the Luminance layer July 12, 2001 for the Red, Green and Blue layers Scope: Vixen R200SS - 8 inch f/4 Newtonian with coma corrector at direct focus Camera: SBIG ST237 Detail: L = 1920 secs (32 min) no binning, R=G=B=960 sec (16 min) each binning 2x2 all in 240 sec. increments. All single frames flat fielded Guided with Meade 201XT at the focus of a Meade 4 inch f/10 Schmidt-Cass. Images processed with CCDOPS for Windows 4.10 and AIP4WIN Further processing performed with Picture Window Pro 3.1 Notes: Seeing excellent for L layer, good for RGB layers