NGC 1491: Fossil Footprint Nebula in Perseus
NGC 1491: Fossil Footprint Nebula in Perseus |
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Fossil Footprint Nebula |
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Object Data |
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| Object type: | Emission Nebula | ||
| Size: | |||
| Magnitude: | 9.1 (NGC1491) | ||
| Constellation: | Perseus | ||
| Distance: | 19,800 ly | ||
| Notes: |
Massive stars at the core of this nebula
emit strong radiation and ignite the surrounding hydrogen and oxygen gas.
The cloud of ionized hydrogen and oxygen resembles a footprint. NGC 1491
is the bright HII region of this nebula and measures 6' x 9' in
size. The nebula itself is over 1 square degree. |
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Exposure Data |
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| Date: | 10/31/243 and 11/1/24 | ||
| Location: | Little Blair Valley, Anza Borrego Desert, CA | ||
| Telescope: | FSQ 106N; 530mm at f/5 | ||
| Camera: | ZWO ASI294mm Pro. With Antlia 3nm Narrowband and RGB filters. 2x2 binned | ||
| Mount: | AP 1100 GTO CP3 | ||
| Exposure times: | Ha: 15 x 15 min (3.75 hrs), OIII: 10 x 15 min (2.5 hrs); SII: 8 x 15 (2 hrs); RGB 12 x 5 min (60 min) each. Imaged over 2 nights. | ||
| Exposure time total: | 11.25 hrs | ||
| Notes: |
Cropped FOV: 88.4 x 68.7 arc min. |
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