NGC 6302 - Bug Nebula / Butterfly Nebula
NGC 6302 - Bug Nebula / Butterfly Nebula |
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Object data of NGC6302 |
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| Object type: | Planetary nebula | |
| Size: | 3' | |
| Magnitude: | 7.1 mag | |
| Constellation: | Sco | |
| Distance: | 3,400 Ly | |
| Notes: |
NGC 6302, also called the Bug Nebula or the Butterfly Nebula, is a bipolar
planetary nebula in the constellation Scorpius. The structure in the nebula
is among the most complex ever observed in planetary nebulae, including many
interesting features such as ionization walls, knots and sharp edges to the
lobes. The spectrum of NGC 6302 shows that its central star is one of the
hottest stars in the galaxy, with a surface temperature of over 250,000
degrees Celsius. The hot central star is not visible, because a dark lane
runs through the waist of the nebula obscuring the central star at all
wavelengths. The prominent dark lane has been shown to have an extraordinary dust chemistry, showing evidence for multiple crystalline silicates, crystalline water ice and quartz. NGC 6302 contains a prominent northwest lobe which extends up to 3′ away from the central star and is estimated to have formed from an eruptive event around 1,900 years ago. |
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Exposure data |
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| Date: | 2018-07-07 until 2018-09-05 | |
| Location: | ChileScope / Chile (2,000m) www.chilescope.com | |
| Telescope: | RC 1m f/6.8 (f=6,800mm) | |
| Camera: | FLI PL16803 with Astrodon filters | |
| Binning: | L 1x1 / RGB 1x1 / Ha [OIII] 1x1 | |
| Mount: | AltAz | |
| Exposure time: | L 36x5min / RGB 13x5min each / Ha [OIII] 16x10min each | |
| Exposure time total: | 11h 35min | |
| Notes: | Image acquisition by CEDIC
team (Bernhard Hubl, Christoph Kaltseis, Herbert Walter, Wolfgang Leitner) Image processing by Bernhard Hubl |
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