Melotte 15 – newborn star cluster in the Heart nebula (HST)

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.

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,
Astrodon SII 5nm,
Exposure 108 x 600 sec.BIN1 Ha filter
52 x 600sec.BIN1, 20 x 1200sec.BIN2 OIII filter
8 x 1200sec.BIN2 SII filter
Total exposure 36 hours
Processing software PixInsight, CCD Inspector

Processing object Melotte 15 was captured using Narrowband Filters.
(Hydrogen-alpha – H-α 6nm, Sulfur – SII 6nm, Oxygen – OIII 5nm)
Here you see a few hours of individual images, which are processed by joining in Hubble (Narrowband in Hubble Palette).

It is interesting to see these individual images without stars.
You can see the resulting product above.