NGC 3628 and a pair of Quasars
From the author of Sizing Up The Universe
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23:40 EDT May 5, 2008.
Starlight Express SXV-H9 on 4" Tak FSQ-106 at f/5.
L=93min (guided 3-minute subexposures).
Lumicon Light Pollution Filter.
These quasars have been studied by Arp et al.
Their work is published in A&A, 391, 833-840 (2002) and is available online at
http://www.aanda.org/index.php?option=article&access=bibcode&bibcode=2002A%2526A...391..833AFUL
(see Figure 4).
The quasars are mag 19.5.