The faintest galaxies in the NGC catalogue according to Dr. Wolfgang Steinicke are:
NGC 344 CET mag 16.1
NGC 2689 UMA mag 16.3
NGC 4042 COM mag 16.4
NGC 6148 HER mag 16.1
NGC 7551 PEG mag 16.2
The attached SkyMapPro map shows NGC 7551 at 11pm on 14/9.
It is in the top left corner of the square of Pegasus, 2d 40m east (pa 74d) of Markab.
The upsidedown
www.wikisky.org image shows NGC 7551 next to a star, about half way between the galaxies NGC 7567 left and NGC 7540 right.
NGC 7551 was found by Albert Marth using a 48" reflector on Malta in 1864. He found 557 new galaxies.
http://www.klima-luft.de/steinicke/n...sons/marth.htm