Melotte 15 Through Narrowband Filters
Melotte 15 Through Narrowband Filters |
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Melotte 15 |
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Object Data |
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| Object type: | Open Cluster and Emission Nebula | ||
| Size: | |||
| Magnitude: | 6.5 | ||
| Constellation: | Cassiopeia | ||
| Distance: | 7500 light years | ||
| Notes: |
Also known as IC1805, stars within this open cluster emit stong radiation.
This radiation, along with strong stellar winds, ignite the dense hydrogen clouds at the center
of the Heart nebula shown here. |
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Exposure Data |
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| Date: | 9/26, 10/2, 10/3/2023 | ||
| Location: | Backyard Observatory, Carlsbad, CA | ||
| Telescope: | TEC 140 refractor telescope; 980mm focal length at f/7. | ||
| Camera: | ASI 294mm pro with Astronomik narrowband filters; Off-axis guiding using an SBIG STi | ||
| Mount: | Losmandy G-11 Gemini I | ||
| Exposure times: | Ha: 8 x 15 min, OIII: 12 x 15 min; SII 15 x 15 min All subs 2x2 binned | ||
| Exposure time total: | 8.75 hrs | ||
| Notes: |
Color mapped using a modified Hubble palette: Red = (SII x 0.5) + (Ha x
0.6); Green = (Ha x 0.5) + (OIII x 0.4); Blue = OIII. Ha channel used
for stars. Image was taken on a bright 3rd Q moon and high humidity; but excellent seeing. Cropped: FOV = 39.7 x 46.8 arcmin; Image scale = 0.94"/pixel |
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