| |
|
 |
|
|
|
|
|
The Dumbbell Nebula
in Elemental Colors |
|
About This Photograph
This image of the Dumbbell Nebula is presented in false-color. Red, green and blue channels were assigned to Sulphur-II, Hydrogen-alpha and Oxygen-III emission lines, respectively. The H-alpha channel was also used for the luminance data.
|
|
|
Technical Details |
| Optics: | 14" f/10 RCOS Ritchey-Chrétien Cassegrain at f/10. | | Camera: | SBIG ST-10XME, CFW8. | | Mount: | Takahashi NJP Temma 2. | | Filters: | Custom Scientific 3nm Sulphur-II, H-alpha, Oxygen-III. | | Dates/Times: | 14, 29, 30 July, 3 August 2003. | | Location: | my backyard observatory in Austin, Texas. | | Exposure Details: | SII:Ha:OIII = 260:200:140 minutes (20-minute sub-exposures). | |
|
|
| |
|
|
|
