Comment Comment by astro123 There's no strong lensing there. If the background galaxies were lensed enough to have multiple images they would also be incredibly distorted.But that does look like a small group/cluster.Edit: Here is an example of strong lensing - see the very curved object just below the bottom bright galaxy https://viewer.legacysurvey.org/?ra=39.9717&dec=-1.5822&laye... This is https://en.wikipedia.org/wiki/Abell_370 parent astro123 5 years ago
But that does look like a small group/cluster.
Edit: Here is an example of strong lensing - see the very curved object just below the bottom bright galaxy https://viewer.legacysurvey.org/?ra=39.9717&dec=-1.5822&laye... This is https://en.wikipedia.org/wiki/Abell_370