Click on the image for FULL RES |
||||
| Name / Constellation | Melotte 15 |
Other: Cr 26 | Cas |
|
| Coordinates | AR: 02h 32m 35.6s - Dec: +61° 29′ 02″ | |||
| Optics | Officina Stellare RC 10" f8 Carbon Truss | |||
| Camera-Mount | SBIG ST10XME/CFW10 - ZWO ASI1600MM guider (ONAG) - 10Micron GM2000 QCI Mount | |||
| Filters | Astrodon Ha-Oxy3-Sul2 | |||
| Exposure |
|
|
|
|
| Location / Date | Promiod (Valle D'Aosta-Italy) "TLP" Remote Observatory - Nov 2021 | |||
| Seeing | 2.5-3" @ 2.1 arcosec/pixel unbinned | |||
| Note | SHO palette | |||
| Acquisition | MaxIm DL - CCD Autopilot5 | |||
| Processing | Adobe Photoshop -  |
|||
| Comment |
The open cluster Melotte 15 is located at the center of IC1805, known as the Heart Nebula because of its shape. This is the largest of the three main nebulae of the W3/W4/W5 complex, a star-forming region in the constellation of Cassiopeia, which also includes the Soul Nebula (IC1848 or W5). The brightest stars in the cluster are blue dwarfs, 24 of which have a mass greater than 10 solar masses, with an age between 1 and 3 million years. Among these blue stars there are 9 of spectral class O, enclosed within a radius of 10 parsecs, while the total radius of the open cluster is 18 parsecs. The nebula is composed essentially of SII, Ha and OIII, gases ionized by the stellar winds of the stars also present within Melotte 15.
|
|||
