The Deer Lick Group and Stephans Quintet
The Deer Lick group of galaxies at lower left and Stephan's Quintet towards upper right of frame. In both cases the brightest member of the group is just a line-of-sight association:the large galaxy in the Deer Lick group is only 40 million light years away whereas the fainter members are 300 million light years distant. And in Stephan's Quintet the whitish galaxy at the right is only 39 million light years away vs 200+ million light years for the others.
This is an RGB image captured on a QHY163M camera fitted with Optolong filters. The scope was an WO FLT110. 6 hours of data in each of R, G and B, captured in 3 minute subs via SGP and PHD2. All post-processing was carried out in PixInsight.
Observed from Prachinburi, Thailand.
The Deer Lick Group and Stephans Quintet
The Deer Lick group of galaxies at lower left and Stephan's Quintet towards upper right of frame. In both cases the brightest member of the group is just a line-of-sight association:the large galaxy in the Deer Lick group is only 40 million light years away whereas the fainter members are 300 million light years distant. And in Stephan's Quintet the whitish galaxy at the right is only 39 million light years away vs 200+ million light years for the others.
This is an RGB image captured on a QHY163M camera fitted with Optolong filters. The scope was an WO FLT110. 6 hours of data in each of R, G and B, captured in 3 minute subs via SGP and PHD2. All post-processing was carried out in PixInsight.
Observed from Prachinburi, Thailand.