Took these to check the tracking near the SCP over two nights.
Exposures 28x16 minutes in 3nm NII. Camera at -35C.
Dark and flat corrected unstretched 16 bit zip file here 36MB.
http://d1355990.i49.quadrahosting.co.../LCent_NII.zip
You can use this to produce you own version.
Or my quickie.
Large image here 10 MB
http://d1355990.i49.quadrahosting.co..._04/LC_NII.jpg
Bert