Daily Image
08-11-2019
Pacman Nebula in Hubble palette
| Submitter: | Albert van Duin |
| Description: | This image is a false colour image of the Pacman Nebula. In a previous AJDI https://www.astron.nl/dailyimage/main.php?date=20191104 the nebula was shown as recorded in H-Alpha light only. But the new CCD-camera also has filters for two other spectral lines, SII and OIII. Images acquired using these filters were combined in a false colour image. Red was substituted with the (deep red) SII image, this filter at 675nm wavelength has 8nm bandwidth, 2 x 1200s integration time. Green was substituted with the (also deep red) H-Alpha image, this filter at 656nm has 7nm bandwidth, 6 x 1200s integration time. And finally Blue was substituted with the (green) OIII image, this filter at 501nm has 7nm bandwidth, 2 x 1200s integration time. This representation is known as the SHO or Hubble palette, it is pleasing to the eye and enhances details. More acquisition details can be found here: https://www.astrobin.com/40xug8/?nc=user |
| Copyright: | astropix.nl |
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