1: Wander idly from home and err (7)
 2: Lethargic entertainer taking part (5)
 3: Fodder derived from Swiss lake (7)
 4: Nerve cells that could make nose run (7)
 5: Object for examination (7)
 6: Jet to Mars for one, never reaching the end (5)
 7: Object to professional examination (7)
 10: Sounds like a lot of cattle for sub- Antarctic island (5)
 14: God, transforming first day into last night, was received (3)
 16: Pious woman in underground hideaway (3)
 17: Make known one pound increase after high school (7)
 18: Desires taking time and interest for musicians (7)
 19: One who regrets keeping large measuring stick (5)
 20: Lean heavily on out of print publications (7)
 21: Sally was ready to embrace East German (7)
 22: Aliens work infrared thrust (7)
 24: Tippecanoe is home to a nut (5)
 26: Cake decoration methods essentially deleted from ancient Chinese book (5)