An HS 125 series flight crew departed TEB on the DALTON visual and climbed to 1500 FT after takeoff ; Departure Control notified the crew they should have been at 1300 FT and they descended appropriately.

Narrative

Taxiing out at TEB late evening; we were told by ground to expect extensive delays for departure unless we were willing to accept the Dalton visual. There was significant construction in progress which caused minor confusion for us during taxi; and the pilot flying was a customer pilot (recently typed in aircraft) who I was watching closely as it was his first time in the aircraft. When reviewing the departure offered in the dim light of the cockpit; and while tired and busy; I mistakenly read the departure altitude as 1500 FT rather than the required 1300 FT; and briefed the other pilot (who was flying the leg) accordingly. It should be noted that 1500 FT was the altitude called for on the Teterboro 5 departure we were originally issued. Upon switching from tower to departure; I checked in with New York at 1500 FT; and was told we should not be a 1500 FT on the Dalton. I had the other pilot immediately descend to 1300 FT after quickly reviewing the chart; and apologized. As far as I am aware; there was no conflict with other traffic. We were at 1500 FT for no more than a minute; I believe. The error was entirely mine; but was caused by several distractions and some fatigue.