The Cat's Eye Nebula
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This is one of the most challenging targets I've ever worked on and there is still a LOT of room for improvement. After the first two nights of 5-minute exposures I went another night with 10-minute exposures. What you see is 13 hours of total exposure and I had to suppress the core when stretching to maintain the details of the eye. This is NGC6543, the Cat's Eye Nebula.
See where this image is located in space via the WorldWide Telescope.
Image details
| Telescope: | Celestron EdgeHD 9.25 | |
| Length: | 2350mm | |
| Aperture: | 235mm | |
| F-stop: | f/10.0 | |
| Sessions: | 1 | |
| Captured: | 2023-07-22 to 2023-07-22 | |
| Lights: | 130 | |
| Exposure: | 450 | |
| Total exposure: | 16 h | |
| Ra: | 17h 58m 34.5s | |
| Dec: | +66° 38' 0.248 | |
| Size: | 14.006 x 13.339 arcmin | |
| Radius: | 0.161 deg | |
| Scale: | 0.2 arcsec/pixel |