Much like the Path to 2049 achievement this one requires getting datachips. It should be noted that while you only need to be level 50 to land on New Romulus, you can't do the quests there until you've unlocked the New Romulus episode and progressed to the correct mission. You can still do the alerts that can appear though. Also you need to reach certain tiers to do the indoor instances, and the first one you can do is the Warehouse which I hate since you have to wait until the ambush to use the terminals. It will get easier once you have access to the Mountain Pass.
While doing the accolades for exploring New Romulus you have to stand on the edge of a house in the Staging Area. Under you is the Romulan Historian. If you're trying to find her normally just look for the big ship in front of the warehouse and look for the small building to the south of it. She appears on you map when you get nearby, just not with the usual "i" icon. When you select the only option given you'll be taken to a personal Duty Officer mission that last 20 hours and requires 4 research. While there is a small chance of failure, depending on the officer used, I wouldn't worry too much about it.
The easiest missions to get these items for me is Overgrown Caves and Mountain Pass. Both give you three, although Mountain Pass is faster and easier (and the boss doesn't one shot you like in the Caves, sigh). See Lonesquiff's tip at the next paragraph for some times on getting your 4 quickly. You could also abort a mission before completing all of the objectives, but this can bug some objects you interact with, like the device to lower the force field in the Caves, so I don't recommend it, although dropping and reacquiring it will fix this.
EDIT: From Lonesquiff - "I've found that aborting the mission and then dropping it and reacquiring it from the mission journal fixes the issue with items not being interact-able. I definitely recommend Mountain Pass for this, the entire mission takes less than five minutes to complete and you can access the first chip/download station within the first minute. Usually I'll go in and get the first one, reset everything, and then complete the mission to get three more so that I earn the daily bonus romulan reputation marks."
You can also get Research from the Alerts that happen on New Romulus, but the amount is dependent on if you get 100% and how much you contributed. More than likely all you'll get is 1, although a successful Alert can net you somewhere between 4 - 10.
There are 31 of these datachips that you need to earn, each volume and chapter have their own accolades to help you keep track. You can also buy/sell/trade these chips with other players using the auction house, or mail them between other characters on your own account by sending it to your own gamertag, example @saracin, just like in Neverwinter. Buying datachips is always expensive, so you should try to exhaust other methods, like looking for trade partners via sessions and the forums, before spending your credits.
The achievement should unlock along with the accolade for completing all volumes so make sure you collect them all on one character.
The volumes and chapters breakdown as:
Volume 1 - 3 Chapters
Volume 2 - 3 Chapters
Volume 3 - 3 Chapters
Volume 4 - 7 Chapters
Volume 5 - 8 Chapters
Volume 6 - 7 Chapters
If I'm missing any info or need to be clear on anything please let me know in the comments or send me a message.
EDIT: If for any reason you down vote, could you please leave a comment or shoot me a message letting me know why and give me a chance to improve my guide based on your thoughts? Thanks for understanding.