Joe Marietta's LRGB of M74
Image Details:
| Telescope | Astro-Physics 6" Refractor |
| Mount | Astro-Physics 900 |
| Camera | NABG ST-7E (all images taken at -29C Chip temperature). |
| Camera Control Software | MaximDL/CCD |
| Location | Fredericksburg, VA (Limiting Magnitude: 5-5.5) |
| Date | December 7, 1999 |
| Sky Conditions | Good. |
| Exposures | A single 30 minute exposure (unbinned). A single 30 minute dark. A single flat field exposure. 10 minutes R,G,B (2x2 binned) |
| Image Resolution | Luminance image was taken at 765x510 (1x1 binning). |
| Processing | The raw image was corrected with dark and flat field frames.
MaximDL 2.04 and Photoshop 5.5 were used to process the image. DDP (FFT 15%
cutoff) was used on the luminance layer to bring out the core. The color
component images were stretched in size to match the scale of the luminance
image and combined in Maxim. Final color balancing was done in Photoshop 5.5. |