Hemisphere:  Northern  ·  Contains:  IC 1805
Getting plate-solving status, please wait...
Melotte 15 in the heart of hearts, 


Melotte 15 in the heart of hearts
Powered byPixInsight

Melotte 15 in the heart of hearts

Technical card

Imaging telescopes or lenses: Skywatcher Explorer 200PDS

Imaging cameras: QHYCCD QHY9M

Mounts: Skywatcher NEQ6 PRO Synscan

Guiding telescopes or lenses: Skywatcher 9x50 finderscope

Guiding cameras: QHYCCD QHY5-III 178 C

Focal reducers: Baader MPCC Mk III

Software: Pixinsight

Filters: Baader Red 2"  ·  Baader L 2''  ·  Baader Green 2"  ·  Baader Blue 2"  ·  ZWO Ha 7nm

Accessory: QHYCCD QHY 2" Filter wheel  ·  Seletek Armadillo

Dates:Oct. 3, 2020Oct. 4, 2020

Baader Blue 2": 25x300" -30C bin 1x1
Baader Green 2": 25x300" -30C bin 1x1
ZWO Ha 7nm: 28x300" -30C bin 1x1
Baader L 2'': 25x300" -30C bin 1x1
Baader Red 2": 25x300" -30C bin 1x1

Integration: 10.7 hours

Flats: ~20

Bias: ~100

Avg. Moon age: 16.66 days

Avg. Moon phase: 95.80%

Basic astrometry details

Astrometry.net job: 3906660

RA center: 2h 33' 32"

DEC center: +61° 35' 9"

Pixel scale: 1.108 arcsec/pixel

Orientation: 56.593 degrees

Field radius: 0.502 degrees

Resolution: 2638x1914

Locations: Puolivälinkangas - Oulu, Oulu, Finland

Data source: Backyard


Melotte 15 is the open star cluster at the heart of IC 1805. It's radiation causes the surrounding nebula to glow.

The cluster contains very young, blue, hot supergiant stars about 1.5 million years old. It is located near the nebula’s centre and home to several bright stars with a mass almost 50
times that of the Sun, as well as many faint stars far less massive than the Sun. Melotte 15 once contained a microquasar, a radio emitting X-ray binary system, but the system was expelled
from the cluster millions of years ago.



License: None (All rights reserved)

Sky plot

Sky plot


Melotte 15 in the heart of hearts,