The NIGHTSEA light head hangers and cables conveniently hold the light head in lieu of the gooseneck lamp. The hangers mount to the end of any of the thumbscrews on the SFA adapter ring. They are available with two different pivot arm lengths for use with long ( 6.5 cm (2.56 in.) and greater) and short (6.3-4.6 cm (2.48-1.81 in.) working distance microscopes. The cables are available in single and dual styles. With the single cable and one light head hanger you can remove the light head from the gooseneck and mount it on the SFA adapter ring. With the dual cable you can power TWO light heads from one base. Just add a second light head and two light head hangers and you have double the excitation intensity.