Draco Triplet
About image
The Draco Galaxy Triplet is a group of three galaxies in Draco constellation.
The beauty of this group is due mainly to the different shapes of the three galaxies.
The spiral galaxy NGC 5985 is for sure the most photogenic one with its blue spiral arms and the yellow core.
Less “conventional” is the galaxy in the center of the group, NGC 5982, which shows a structures with shells caused by mergers with small galaxies with low mass.
Then there is NGC 5981, which is a spiral galaxy edge-on.
The estimated distances of NGC 5982 and NGC 5985 are around 137 million light years, while for NGC 5981 is 86 million: so the first two galaxies have also physical dimensions (and not only apparent dimensions) greater than NGC 5981.
Technical data R 24x300" bin3 -15C all gain 100
Optic GSO RC12 Truss - Aperture 304mm, focal lenght 2432mm, f/8
Mount 10Micron GM2000 HPSII
Camera ZWO ASI 2600 MM Pro with filter wheel 7 positions
Filters Astrodon Gen2 E-Serie Tru-Balance 50mm unmounted LRGB
Guiding system ZWO OAG-L with guide camera ASI 174MM
Exposure details L 80x300" bin3 -15C
G 24x300" bin3 -15C
B 24x300" bin3 -15C
Total integration 12h40'
Acquisition Voyager, PHD2
Processing Pixinsight 1.8, Photoshop CS5, StarXTerminator, NoiseXTerminator, BlurXTerminator
SQM-L 21.08
Location Promiod (Aosta Valley, Italy), own remote observatory
Date 5/26/27 March 2025
© Roberto Marinoni 2019 - All rights reserved