A series of followspots made by Altman. One model still being manufactured is more often referred to as 1000Q because it was designed for the 1000W FEL lamp.
http://mail.altmanltg.com/publicsynergy/docs/BLItemDossier.asp?Item=1000Q&PLID=&Country=US
Prior models (901, 902, 902 Jr.) used incandescent G1500 lamps or DTA/DTJ; or a 2100W, 60V T24 lamp (2100 SuperSpot).
http://mail.altmanltg.com/publicsynergy/docs/BLItemDossier.asp?Item=1000Q&PLID=&Country=US
Prior models (901, 902, 902 Jr.) used incandescent G1500 lamps or DTA/DTJ; or a 2100W, 60V T24 lamp (2100 SuperSpot).