Arp 198 (VV 267a, VV 267b) | Askar130PHQ @ F/7.7 + ASI294MM-Pro (bin1-11Mp, Flats, Darks, 0° C | 120 x 30 seconds, G=250 | BLF NR, Linear GR | SharpCap 4.1 

Notes: Main body of UGC6073 apparent at 30 seconds.   Very elongated with bright (11.7) star very near left end.  Elongation (5:1) with very uneven brightness across its length.  Apparently the nucleus is on the left end of the galaxy and I notice it is elongated about (2.5:1) with a brighter core and gently fading halo.  Just to the right of this nucleus is a very narrow strip with a brighter elongated spot near its center.  At 15 minutes I start to notice halo has an even fainter extended halo.  In Arp's image, this faint outer halo are clear spiral arms (and fairly symmetrical).  A very low contrast arc in this outer halo starts to resolve at around 20 minutes.  It appears to start near the brighter spot in the strip next to the main nucleus and then curves around the main nucleus.  Another arc starts below the main nucleus and curves upward to stream out parallel to the strip.  WD appears to tighten up these arcs somewhat (I will wait and see if they tighten up without this enhancement).  At 25 minutes and at 175% zoom, I can start to make out a second arc that connects on the right of the main halo and curves around inside the outer arc.  Some brightness variations appear - one right at the attachment point of the upper outer arc where it meets the spot.  WD brings out the extended arc where it wraps around near the bright star (it is not noticeable without WD as I just see a bit of haze here).  Much more mottling appears where the lower arc connects to the nucleus at about 30 minutes.  I also notice that the core in the nucleus while it is oval is not aligned with the oval of the nucleus - it is skewed slightly upward.  At 55 minutes, I notice that VV 267b's extension on the right has a slight curve upward (and is confirmed in Arp's image).  I know more time-on-target would clean up the spiral (probably 2 to 3 hours), but I'm pretty happy at 60 minutes. 

Only at the 50 minute mark did I realize that this "single" galaxy is actually a pair.  The more face-on spiral on the left is VV 267a and the narrow one on the right is VV 267b.  The pair make up UGC 6073 (Arp 198).