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Breakout Points

Are they common ? (anyone can do it!)
That's classified. Official Imperial navigation theory says they are theoretically possible but they are rare and unstable "virtual jump points." You may be able to get in but they may disappear before you can get out. The very act of jumping into them could cause them to shift. That's the official word anyway.

It is a capital offense to fail to report to Imperial authorities the presence of such jump points or to publically disclose them. People say you get a hefty reward for finding these, but often a memroy wipe as well, so who knows.

Rumor and unsanctioned research says they are more common and stable than the official line.

It is also known that one can almost always jump to the gravitaional focus of a star, usuallly about 500 AU out. In fact, IMTU, it was early space probes sent to the gravitational focus of Sol (to observe the Kzin threat at Alpha Centauri) that acquired anomolous data that led to the discovery of jump drive.

Jumping to a gravitational focus is usually restricited, there are few if any legitimate civilian reasons to do so besides science



Do you assign a specific skill level to be able to execute jumping to one ?
Oh yes. It is a major navigational task to plot where they are so one can emerge correctly. IMTU a normal star takes decades of observation before the information is suffiently accurate to plot a non-suicide jump, otherwise scouts could explore the galaxy in a few decades. :) Astrological charts and information, even from primitive societies, is very valuable in helping to get accurate jump coordinates. The Navy has the best data and it is said they publish slightly inaccurate commercial charts to prevent enemies from making coordinated jumps.

IMTU the Imperial Navy can make coordinated jumps, multiple ships arriving at the same point at the same time (or at least within minutes of each other). This can be done with up to 6 ships or so and is a top secret and difficult manuever (Nav 5+).

Do you require a significant amount of prep to be able to execute the maneuver? (not just let's do it!)
Once the coordinates are know it doens't take any longer than a normal jump, but you may want to make sure everthing is tuned perfectly as there are bad modifiers to trying it.
 
IMTU I use Jump Precipitation. in the OTU, there is no requirement for a mass at the end of the Jump. This Section of the forum is IN MY TRAVELLER UNIVERSE. Sorry I wasn't clear (Bill Cameron don't kill me!)


Plank,

The apology should be mine. As you correctly point out, this is the IMTU section after all.

In the OTU, deep space space jumps are routine, easy, and have been done for millennia.

IYTU deep space jumps can be anything you want them to be.


Have fun,
Bill
 
The way I do it is:

Any Trained Astrogator can perform a deep space jump, with the onboard software, and some hours calculating it, based on galactic rotation, angles on marker stars, and simple time / distance (more or less).

However, the big problem is that when you are jumping in to such a place, there is a target set of coordinates, but no accurate one-for-one jumpspace/realspace course to follow, it is essentially "blind", so that as Han says "You might pass through a star or bounce too close to a supernova"

Densitometer / IR/ Visible light scans from a few psec out notwithstanding.

I make it that jumping to a "Blank hex" is very hazardous, expressly because you don't know what is there. If the roll is made, well it's empty space. if not, you've tried to make some oort cloud type object just that much more dense, with disastrous effects.

An Interesting discussion.
 
Densitometer / IR/ Visible light scans from a few psec out notwithstanding.

I make it that jumping to a "Blank hex" is very hazardous, expressly because you don't know what is there. If the roll is made, well it's empty space. if not, you've tried to make some oort cloud type object just that much more dense, with disastrous effects.

An Interesting discussion.

I don't think the densitometer has ranges in the LY neighborhood, but I could be wrong.

I'm thinking businesses like mega-corps or the IISS or IN can be sure, by jumping in jump probes or STL ships to "checkout the hex" -- and then wait a few centuries for the data to come back.

I also assume misjumps could provide some information as well.

dangerous business.
 
Density of the "stellar atmosphere/gas cloud" can be roughly determined by making "occluded star" observations from multiple star systems.

You measure the brightness & light spectrum of a known star from a known point, then you jump to where the target system is directly between you and the known star and make another set of measurements... the changes tell you what elements are between, and in what density.
 
I'm thinking businesses like mega-corps or the IISS or IN can be sure, by jumping in jump probes or STL ships to "checkout the hex" -- and then wait a few centuries for the data to come back.
Why "centuries"? After all, each hex is 1 parsec across, which is 3.26 light-years -- data sent via electromagnetic signals should be back in something significantly less than a century.
 
Interstellar space is vast, and very un-dense. I don't think I possess enough dice to roll the chances of jumping into something by accident.
Every jump made by you, your children and your grandchildren will exit into empty space unless YOU (or the Referee) choose otherwise.
Ask Malenfant. ;)
 
I use the "anyone can jump in an empty hex, but..." variant.

+ For a single ship carrying it's own fuel it is a simple jump-transfer fuel-check position-jump again. Might take a bit to get the exact bearing for a clean jump to 100D or cause a bit of deviation in the target system but it works

+ A single ship with civilian drives trying to get resonably (20 days full thrust) close to a certain point (refueling station) will either require VERY lengthy calculations (at a high task number) or will likely fail. Civilian convois trying to do that will have to do that for every single ship

+ A single ship with military drives trying the same will have an easier task due to better jump calibration gear/better tuned drives etc.

+ For a military unit with jump-coordination (normally enabling egress time to be within 168h+-1 Percent, mentioned in a DGP mag IIRC), a good astrogator and some pre-planning it is resonably safe to do and theý do this resonably often

So it's more a matter of hitting the right spot and doing so with a group than generally jumping into a blind hex. My ISW Terranians developed the necessary computers and calculations to do that so they could rendevouz with tenders in deep space(1) and refuel, the Vilanie never did.


(1) Warships normaly don't have enough cargo space to carry additional J-Fuel
 
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