Makes total sense, I have one for my camera but only tried it once as it covered the manual focus ring. This is because I'm stupid and didn't think to use the hood which I'd discarded because it was dark.
in this case, the hood on the scope is actually called a "dew shield", and the dew heater wraps it to create a pool of warmer / drier air to prevent the dew forming.
Makes total sense, I have one for my camera but only tried it once as it covered the manual focus ring. This is because I'm stupid and didn't think to use the hood which I'd discarded because it was dark.