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Heart of Gold | Melotte 15 | by MessierX
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Heart of Gold | Melotte 15

The Heart Nebula with Melotte 15


Centred in the image is the star cluster Melotte 15*. The image was a challenged to compose and a lot of time was spent trying to adjust the compositional balance. The image has been cropped. I have moved away from the common SHO colour scheme and have tried to get a more natural look. As with all narrow band imaging the word natural is extremely subjective.




Imaging telescopes or lenses: William Optics GT71 II APO

Imaging cameras: ZWO ASI 294MM Pro (cooled) ASI294MM PRO


Mounts: Skywatcher HEQ5 PRO (belt modification)


Guiding telescopes or lenses: William Optics 50/200 GuideScope


Guiding cameras: ZWO ASI120MM-S ASI 120MM-S


Focal reducers: William Optics Adjustable Flat6A III 0.8x Reducer / Flattener


Software: Asi Air for IOS · PixInsight 1.8.7 Ripley PixInsight


Filters: Baader Ha, OIII, SII 1.25 inch


Accessory: ZWO ASI Air · Pegasus Astro Pocket Powerbox


Dates:Oct. 22, 2021


Frames:Baader Ha, OIII, SII 1.25 inch: 247x180" (12h 21') (gain: 120.00) -10C bin 2x2


Integration: 12h 21'


Darks: 41


Flats: 41


Flat darks: 41


Avg. Moon age: 16.47 days


Avg. Moon phase: 96.74%


Bortle Dark-Sky Scale: 8.00


Temperature: 16.00


RA center: 02h33m03s.469


DEC center: +61°24′40″.45


Pixel scale: 1.422 arcsec/pixel


Orientation: -151.410 degrees


Field radius: 1.097 degrees

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Uploaded on October 24, 2021