I'm working on a guide for all the Dead Ghost Locations within the game. I've found about 30 of them (mostly Tower, Earth & Moon), and will be updating the link with as much info as I can as I come across more. Hopefully you find it useful!

Notes:

• You only need to pick up 50 of these to get the Ghost Hunter achievement/trophy. There are a total of 62 of them within the game, so you DO NOT need to get all of them for the achievement/trophy, but additional Dead Ghosts will get you more Grimoire Points and possible unlocks.
• Ghosts can be picked up on ANY mission of their specific planet, however not all areas are accessible from all missions, as some areas are locked off until later.
• Each Dead Ghost is listed below with a mission that is recommended to play on in order to find it. The missions are listed in order of how they are played to progress in the story. This allows you to use the on-screen key features of a map, as well as the on-screen objective to more easily find the Dead Ghost location.
• Maps made available via this link made by PSN users OMGITSJASON & GOBbluth89

// MORE INFO WILL GO HERE

//VIDEO

1 - [] - Tower Watch
2 - [] - Tower North
3 - [] - Hall of Guardians
4 - [] - Traveler’s Walk (Open Iron Banner Only)

[0:11] - Notes
1 - [0:46] - A Guardian Rises (or Explore/Patrol) – The Breach
2 - [1:10] - A Guardian Rises (or Explore/Patrol) – The Breach
3 - [1:26] - A Guardian Rises (or Explore/Patrol) – The Divide
4 - [] - A Guardian Rises (or Explore/Patrol) – The Divide
5 - [] - Restoration – The Steppes
6 - [] - Restoration – The Steppes
7 - [] - The Dark Within – Mothyards
8 - [] - The Dark Within – Mothyards
9 - [] - The Dark Within – Lunar Complex
10 - [] - The Warmind – Forgotten Shore
11 - [] - The Warmind – Terrestrial Complex
12 - [] - The Last Array – Skywatch
13 - [] - The Devil’s Lair – Rocketyard
14 - [] - The Devil’s Lair – Refinery
15 - [] - The Devil’s Lair – The Blast
16 - [] - Explore/Patrol – Bunker RAS-2 (GLITCHY)
17 - [] - Explore/Patrol – The Grottos

1 - [] - The Dark Beyond – Archer’s Line
2 - [] - The Dark Beyond – Archer’s Line
3 - [] - The Dark Beyond – Anchor of Light
4 - [] - The World’s Grave – Hall of Wisdom
5 - [] - The World’s Grave – Circle of Bones
6 - [] - The Sword of Crota – Hellmouth
7 - [] - The Sword of Crota – The Gatehouse
8 - [] - Shrine of Oryx – Shrine of Oryx
9 - [] - Chamber of Night – Temple of Crota

http://www.xboxachievements.com/forum/showthread.php?t=588906