Melotte 15 is an emission nebula located in the central region of the IC 1805 nebula (heart nebula).
The object is about 7,500 light-years away in the constellation Cassiopeia.
The emission nebula showing radiant ionized hydrogen. Melotte 15 is a favorite of many astrophotographers.
Melotte 15 – newborn star cluster in the heart nebula (Bicolor)
| Telescope | ASA 10″ F/3.6 10N ASTROGRAPH OTA |
| Focal length | 900 mm |
| Mount | G53f |
| Imaging camera | Atik 460EX mono |
| Guiding cameras | Lodestar X2 -Autoguider |
| Guiding optics | ASA 10″- OAG |
| Focal reducers | ASA 3″ Wynne Corrector 0,85x |
| Constellations | Cassiopeia |
| Distance | 7500 light years |
| RA center | 02h 34′ 44″ |
| DEC center | +61°24′ 10″ |
| Location taken | Slovakia |
| Date taken | 11/2019 |
| Pixel scale | 1.04 arcsec/pixel |
| Filters | Astronomik Ha 6nm , Astrodon OIII 5nm, |
| Exposure | 108 x 600 sec.BIN1 Ha filter 52 x 600sec.BIN1 OIII filter 20 x 1200sec.BIN2 OIII filter |
| Total exposure | 33,5 hours |
| Processing software | PixInsight, CCD Inspector |
Processing object Melotte 15 BICOLOR was captured using narrowband filters a Hydrogen-alpha H-α 6nm (656.3 nm), Oxygen OIII 5nm(500.7 nm).
Here you see a few hours of individual images (Ha,OIII). Photos are only gently stretched (CurvesTransformation).
Here I also add a variant of the second processing.
It is interesting to see these individual images without stars.
You can see the resulting product above.
