LBN 728 is a modestly sized faint nebula. It is part of the Lynd's Bright Nebula catalog but there is very little info about it. It measures 25x10 arcminutes but is surrounded by other gas clouds etc.
It is found in Ursa Major

13/10/9 x 10 min each of RGB, 24x10min Luminance.
Camera: Moravian G4 (16803) w Gen II Astrodon RGB and H-Alpha
Scope: Astrophysics AP155EDF Refractor w Focus Boss II
Mount: Paramount MX
Guiding SBIG ST402ME attached to a Borg 60mm guidescope
RGB and Luminance processing in PixInsight. Stars removed prior to stretching using Russ Croman's StarXTerminator in PI.; Blend of starless luminance w RGB and save-for-web in PS CC