When you enter, there's a button on the floor, you can see it on mini-map as ! mark. In case it's not what you were asking for, on the top floor of each temple you can find lever. After pulling it, door leading to solar and lunar tablets will be open and spots of light will appear guiding you to tablet. Hope it helps
Thx, but I'm still missing something, I finished the sun temple, but I can't get to the switch to open the gates in the moon temple.. is there something small that I should've done that I didnt do? I got the sonar panel, but cant get to the lunar one... help?
You're sure you're entering Moon temple? If you go to sun temple and through the mirror, lunar tablet is not accessible. You have to do mission your father has given you (battle with dr Snap) and as reward you'll get access to north celeste. From north celeste you go to into moon temple, then through mirror to sun temple, then to great mirror and finally to top of moon temple. Then you pull lever and follow the spotlights.