Just took this this morning. A search of the web shows that Arp 31 is not a popular target. (I'm sure it doesn't help that it's so small.) The Sky lists it as 2.2 x 1.4, mag 13.9. The skies were extremely dark here in Minneapolis due to the cold front that just rolled through. Mag 5.5 skies just 22 miles from the heart of downtown. That's pretty good for me! Skies were a little "bouncy" though. This object presented more detail than I anticipated so it was a welcome surprise. Never a shortage of (small) targets with this setup. You never know what might show up with a small target.
Details-1992 C11 (CF retrofit), MI-250, f/11.5, ST-8XME binned 2x2, AO-8 using guide star exposure of .75 sec, 12 x 10 min subs.
Details-1992 C11 (CF retrofit), MI-250, f/11.5, ST-8XME binned 2x2, AO-8 using guide star exposure of .75 sec, 12 x 10 min subs.
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