Emohawk - Polymorph II - S6-E4
Visible crew/equipment: When Lister says "Bony butts our move lets' just before they are fired at, a boom mic is visible to Rimmer's right. (00:06:40)
Emohawk - Polymorph II - S6-E4
Visible crew/equipment: When Starbug gets hit, as Rimmer says 'damage report' a boom mic can be seen on the right side of the screen. (00:07:25)
Emohawk - Polymorph II - S6-E4
Visible crew/equipment: When Rimmer says 'details halibut breath' a boom mic can be seen to Rimmer's left. (00:07:30)
Emohawk - Polymorph II - S6-E4
Visible crew/equipment: After the crash when Lister comes in from outside, as he says 'it's waist high out there', a boom mic can be seen at the top of the screen. (00:09:30)
Emohawk - Polymorph II - S6-E4
Visible crew/equipment: When Rimmer says the oxy-generation unit is destroyed, a boom mic shadow can be seen on the crate in front of him. (00:09:40)
Emohawk - Polymorph II - S6-E4
Visible crew/equipment: When Rimmer picks up the gun just after the Cat turns into Duane Dibley, a boom mic arm shadow can be seen moving past the crates, just as Rimmer turns his back on the camera. (00:20:50)
Emohawk - Polymorph II - S6-E4
Visible crew/equipment: Just after the grenade explodes, a boom mic shadow can be seen on Kryten's head. (00:27:00)
Answer: The cello is a large four-stringed instrument, which, when it is played, stands vertically on the floor between the player's legs (assuming they are seated). If it is to grow as large as the other instuments mentioned will, it would require a rather unseemly lack of femininity to be able to encompass it with the legs.
Rooster of Doom