This isn't Ghostbusters. They can't be captured.
When you find a ghost it will capture it
you dont
There is no scientific evidence that proves the existence of ghosts, so it is not possible to capture one. Ghosts are considered to be paranormal entities, and methods for capturing them are not supported by scientific research.
You can't catch a ghost. End of. But you could try taking a picture of a haunted area (you may get a snapshot of the ghost) or talking to the ghost! Ghost Buster
you cant unless your a pro/already done this. if not dont try.
In Bobby Mackey's Music World in season 1 episode 1
You need to get the Silph Scope from Saffron City. You get it in the building of Silph Co. Once you have it, all you need to do is go back to the floor with the Ghost Marowak, and it will appear. (Note: you can't capture Marowak, its a ghost!)
sometimes, if its voices it wont show. Best way to capture a ghost is to film, set up cameras and film
1. play ghost central 2. get the materials and equip your net 3. go to 24 carrot and the headless horseman is in front of the carrot cake factory let him see you and along with the other ghosts around poptropica just touch him and you'll capture him 4. go to wild west and into the trading post to capture the bell witch 5. go to steamwork's center/museum to capture deogen 6. the brown lady ghost is at skullduggery island and she the brown lady will be there 7. sweet william is at shrink ray 8. go back to the ghost hunter and she'll betray you by conjuring the ghost to take over poptropica 9. you need to capture them again and knock out her out and members will get the outfit she has NOTES: you must be a member or you will only be aloud to capture 3 and not get the outfit sorry ( i know how you feel )
ghost type Pokemon are immune to normal and fighting type moves and psychic, dark, and ghost types are 2x effective against them.
you will need either a bug type, ghost type, or a dark type to defeat or capture mewtwo.
If you just jump on the ghost it should suck them into your net. If that doesn't work try jumping and clicking.