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| Object | NGC 2997 Galaxy |
| Info |
NGC 2997- is located in the southern constellation of Antila. It is an 11th magnitude spiral galaxy reminiscent of the M83 galaxy. Bright red knots of ionised hydrogen scattered through the spiral arms are birthing millions of hot, young, blue stars, their light, as can be seen, is extending throughout the arms. The core of this beautiful galaxy is showing that there are a large concentration of much older, yellow red stars. |
| Date | 15th(lum) & 17th(rgb)/ 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 | Lum 77'(combined) R:15' G:15" B:15" [all 1' sub exposures all unbinned] No dark frames removed. |
| Guiding | none |
| Filters | Astronomik clear/ RGB Type II Filter set |
| Notes/ Conditions |
Conditions- While taking the luminance frames, seeing was a little poor but transparency was average to good. When taking the colour channels, high cloud passed through the whole time, causing severe gradients to the overal combined rgb composite. Gradients removed by PixInsight Le's back ground extraction routine to the separate channels. Lum average FWHM 1.7. RGB average FWHM 2.1 |