The Astronomer Monkey is a supporting tower. It has a long range because it can see Bloons from a distance with its telescope, and any tower within its range will be granted the ability to attack any Bloon within its range. The only towers that are unaffected are: Towers with infinite range (like Snipers), non-offensive Towers and Towers with no targeting systems (Farms, Dartlings, Aces, Tack Shooters for example), or Towers with a close-range weapon (like Gargantuan Monkeys).
Lastly, it and the Towers in its range are not affected by night-time or lights off.
Path 1 Upgrades[]
Rocket-propelled Attacks[]
All affected Towers gain rockets on their projectiles, doubling the speed and therefore increasing long-range accuracy!
Price: $500 on Medium.
Appearance change: The Tower holds a toy rocket in its spare hand.
Homing Rockets[]
Affected Towers now have homing attacks, providing them with perfect accuracy.
Price: $750 on Medium.
Appearance change: The Tower's rocket is replaced with a rocket from the Dartling Gun's Hydra Rocket Pods upgrade.
Explosive Rockets[]
Affected Tower's attacks now explode if they reach their pop limit.
Price: $2,500 on Medium.
Details: Each explosion only has a Popping Power of 10, to prevent towers like Super Monkeys from becoming too OP.
Appearance change: The Tower now holds a larger rocket.
Direct Attacks[]
The Tower directly shoots the rockets out of a specially-designed gun, which attacks twenty times every second!
Price: $20,000 on Medium.
Appearance change: The rocket is replaced with a large red and orange gun.
Rocket Launcher[]
Tier 5 Upgrade: Instead of shooting twenty times a second, it shoots once every second but pops twenty layers, has a massive explosive area and lots of popping power!
Price: $22,500 on Medium.
Details: The explosions from the Rocket Launcher have a Popping Power of 250!
Appearance change: The gun is replaced with a red and orange Rocket Launcher.
Path 2 Upgrades[]
Reflector Telescope[]
Gives it a better Telescope, increasing range.
Price: $1,200 on Medium.
Details: Range increases to a 0/2 Super Monkey.
Appearance change: The telescope is no longer handheld, and now rests on a tripod.
Better Lenses[]
The Tower and Towers within its range can detect Camo Bloons!
Price: $4,500 on Medium.
Appearance change: The telescope now shines brighter.
Observatory[]
The Observatory has an enormous range!
Price: $7,500 on Medium.
Details: Range increases to a Monkey Village with Bigger Beacons.
Appearance change: The Astronomer Monkey is replaced with an Observatory.
Satellite Telescope[]
Satellite Telescope Ability: A Satellite Telescope will look back down at the planet and de-camo all Camo Bloons in that Round, whether or not they've spawned yet.
Price: $5,000 on Medium.
Cooldown: 100sec.
Appearance change: The Observatory has a larger telescope.
Hubbloon Space Telescope[]
Tier 5 Upgrade: Every 20 seconds the telescope will pass overhead removing the Camo Status from any Camo Bloons onscreen. The ability is still available, but it's much less useful now.
Price: $25,000 on Medium.
Appearance change: The Observatory's telescope is now longer.