Melotte 15 and IC 1805
Constellation: Cassiopeia
Melotte 15 (a.k.a Collinder 26) is an open cluster in the Heart nebula (IC 1805 or Sh2-190). Its distance from Earth is about 7500 Ly and is located in the Perseus arm of our galaxy. This radations emanating from this small group of stars drives the intense colours of the larger Heart nebula. Link to interactive sky chart.
Dates:
This image was taken in August and September 2024
Telescope & Mount:
656 14″ Corrected Newtonian on a ASA DDM100 mount.
Imaging:
Camera: PlayerOne Zeus Mono (bin 1×1)
Data:
Nebula:
Ha: 58x300s
O-III: 92x300s
S-II: 88x300s
Stars:
Red: 30x120s
Green: 30x120s
Blue: 30x120s
Total integration time: 22h 50′
Dates:
Th§is image was taken in September and December 2024.
Top image in HSO
Bottom image: HOO
Telescope & Mount:
Celestron 9.25″ EdgeHD with Hyperstar 4.0 on a 10Micron GM1000HPS mount.
Imaging:
Camera: ASI2600MC-Pro (bin 1×1)
Data:
Askar ColorMagic (S2O3): 406x180s
Antlia ALP-T Dual Band 5nm Highspeed (HaO3): 394x180s
Total integration time: 40h
Dates:
Th§is image was taken in December 2024.
Color palette is HSO. Note the planetary nebula StDr-61 (134.3+02.5) at the top-middle of the image.
Telescope & Mount:
Takahashi ED 180 on a Paramount ME mount.
Imaging:
Camera: Player-One Zeus mono (bin 1×1)
Data:
IDAS-Ha: 60x300s
IDAS-O3: 69s300s
IDAS:S2: 62x300s
Total integration time: 15h 55′