Using CCDStack I just opened the 20x300 sec frames from 01 Sept and the 24x300 sec frames from 03 Sept and performed the Align and Stack functions, with Combine set to Maximum, to discover I had also registered a couple of longer, faint trails located below Neptune and Nereid.
This is the “Raw” image output from CCDStack, (annotated in PS CC), so you can see the overlap artefact between the 01 and 03 Sept data sets, along with the two faint trails.
The left-hand trail is that of NEO 2001 TQ44, a Main Belt Object class Asteroid at R.A.: 23h14m47.8s Dec.: -05°53'09" (2000) in Aquarius with a Magnitude: 18.81.
The right-hand trail is that of 2003 QA35, an Outer Main Belt Object class Asteroid at R.A.: 23h15m27.1s Dec.: -05°51'29" (2000) in Aquarius with a Magnitude: 18.36.
I used SkyTools 3 Pro to identify the Asteroids and obtain the detailed information.
It looks like these images sets are the unexpected gifts that keep on giving.
Cheers
Dennis