What with nearly two months of clouds or full moon I took a second look at my shot of Arp 206. There were many background galaxies. Most I found nothing on but 9 objects were listed in NED. While the background galaxies all looked very distant that wasn't the case. One is likely a member of the Arp 206 system showing a radial velocity putting it slightly closer than the two main galaxies. It must be a really tiny galaxy. All others were at least 560 million light years to over 2 million light years. Three are quasars though one galaxy looks the same as the three QSOs. Below is a cropped portion of the original image with 9 objects marked can you figure out which is the close one and which are the very distant ones? Size and brightness don't help much!
Below I've listed them in order of increasing distance. How many did you get right?
2: SDSS J105205.52+362836.3 magnitude 17.9 33 million light years
4: PGC 2081645 magnitude 17.1 Distance 563 million light years
5: SDSS J105133.55+363053.3 magnitude 17.9 570 million light years
6: SDSS J105141.30+363653.4 magnitude 16.1 570 million light years
1: SDSS J105243.56+362925.6 magnitude 17.9 1.676 billion light years
3: SDSS J105203.05+363205.0 magnitude 18.9 2.786 billion light years
7: CSO 295 magnitude 16.8 5.66 billion light years
8: SDSS J105158.68+364326.1 19.0 magnitude 7.321 billion light years
9: SDSS J105242.50+364335.7 19.3 magnitude 8.09 billion light years
When originally posted I reversed 7 and 8. Got to type these up when I'm not so tired.