NGC 678/680 and IC 1730
About image
This group of three galaxies is visible in Aries constellation.NGC 678 is seen edge-on and shows a dust lane which covers its entire lenght: its distance is 130 million light years.
Immediately “below” in the image there is NGC 680, an elliptical galaxy which shows shell-like structures in its halo: its distance is similar to the one of NGC 678 and the two galaxies shows redshifts with minimum difference, so probably they are an in interaction.
In the bottom part of the group there is IC 1730, very small and less bright.
In the lower left corner of the image is visible a gradient of light: it is the light of the bright star 1 Arietis, just out of the frame: I decided to leave this gradient and also the long spike in a way that it is clear that it is due to a star in the field and not to other causes like for example artificial light pollution.
Technical data R 19x300" 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 62x300" bin3 -15C
G 18x300" bin3 -15C
B 19x300" bin3 -15C
Total integration 9h50'
Acquisition Voyager, PHD2
Processing Pixinsight 1.8, Photoshop CS5, StarXTerminator, NoiseXTerminator, BlurXTerminator
SQM-L 21.24
Location Promiod (Aosta Valley, Italy), own remote observatory
Date 28 September, 28/29 October 2024
© Roberto Marinoni 2019 - All rights reserved