Converting T20 stats to CT?
- Thread starter Hal
- Start date
mike wightman
SOC-14 10K
Yep, to convert T20 spinals into HG just convert the numerical T20 USP into a CT "hexadecimal" letter (A is 10, G is 16 etc.).
Remembering that there is no I or O, of course
Remembering that there is no I or O, of course
Thanks Sigg
Now to figure out the Sensor rules
With what I'm working on, I sort of have to have a feel for sensors in T20. When I saw the rating of "parsecs" in sensors I thought "What in the HELL!" as it takes electromagnetic propogation some 3.26 YEARS for data a parsec away to reach any sensor - and that sensor had darn well better be EXTRA sensitive! Then I figured that I'd better ASK about what the rules state rather than assume
Now to figure out the Sensor rules
With what I'm working on, I sort of have to have a feel for sensors in T20. When I saw the rating of "parsecs" in sensors I thought "What in the HELL!" as it takes electromagnetic propogation some 3.26 YEARS for data a parsec away to reach any sensor - and that sensor had darn well better be EXTRA sensitive! Then I figured that I'd better ASK about what the rules state rather than assume
mike wightman
SOC-14 10K
Umm, the Hubble Space Telescope is a passive sensor, how far can that see???
The T20 sensors can see up to 2 parsecs, but the info is six and a half years out of date. At least you know what's in the system you're jumping to, how many gas giants, planets, that sort of thing.
The T20 sensors can see up to 2 parsecs, but the info is six and a half years out of date. At least you know what's in the system you're jumping to, how many gas giants, planets, that sort of thing.
The reason I was asking is because I need to be able to set up sensor detection situations for ships and the like. If the scenario works one way with CT rules, another way with GT rules, and yet a third way with T20 rules - I have to be careful in how I set up scenarios. If those sensors rated in parsecs are 6 years out of date and can only detect really LARGE objects (several orders of magnitude larger than ships) then I need to work with the system
Anyone in need of hair? I'm likely gonna tear some of mine out given enough time and incentive
Anyone in need of hair? I'm likely gonna tear some of mine out given enough time and incentive
mike wightman
SOC-14 10K
Did you read though this thread a while back.
There may be some things of use to you in it.
There's also this one
Hope some of it helps.
There may be some things of use to you in it.
There's also this one
Hope some of it helps.
One problem with comparing hubble to most ship's sensors:
Narrow field of view. Hubble's FoV is very narrow, which also means it can make use of fianter sources, but....
ANY optical telescope can recieve data from the edge of the universe... Even one's rifle scope. It's just that the detector attached is not capable of the resolution nor exposure time to make it worthy past a few light-hours from reflective signature... that Mk1 Eye is pretty weak.
Keep in mind that Hubbles' sensors are the size of a small car. About 1Td. and are NOT capable of "Search" modes, merely "pinpoint" modes. (IE, specialized for single mode operation... and thhus more powerful than their size indicates).
However, I doubt Hubble can actually resolve planetary bodies even at 1.1 parsecs... but then, has anyone actually pointed it at A Centauri and checked?
I'm certain that Traveller Passives could easily reach 2 Parsecs for detecting 100Td SHIPS. Yeah, the data would be 6,5 years old at limit... but it could. Now, a 100 Td ship at that range is 25m long, or 25^2/16000000^2 or roughly 2.4E-12 the magnitude of a planet the size of earth, assuming same albedo. (Actually, ships albedos can be assumed to be MUCH higher... say .5-.9 routinely, vs planets raging form 0.2-0.9)
Assuming a signature +1 is simply a 10fold increase, the signature of a size 1 planet is more than 6 orders...
and each order is going to add another doubling or so to the range.... so i'd say your 2Pc sensor can detect Earthlike worlds at 2^12 parsecs... and stars are brighter still...
Narrow field of view. Hubble's FoV is very narrow, which also means it can make use of fianter sources, but....
ANY optical telescope can recieve data from the edge of the universe... Even one's rifle scope. It's just that the detector attached is not capable of the resolution nor exposure time to make it worthy past a few light-hours from reflective signature... that Mk1 Eye is pretty weak.
Keep in mind that Hubbles' sensors are the size of a small car. About 1Td. and are NOT capable of "Search" modes, merely "pinpoint" modes. (IE, specialized for single mode operation... and thhus more powerful than their size indicates).
However, I doubt Hubble can actually resolve planetary bodies even at 1.1 parsecs... but then, has anyone actually pointed it at A Centauri and checked?
I'm certain that Traveller Passives could easily reach 2 Parsecs for detecting 100Td SHIPS. Yeah, the data would be 6,5 years old at limit... but it could. Now, a 100 Td ship at that range is 25m long, or 25^2/16000000^2 or roughly 2.4E-12 the magnitude of a planet the size of earth, assuming same albedo. (Actually, ships albedos can be assumed to be MUCH higher... say .5-.9 routinely, vs planets raging form 0.2-0.9)
Assuming a signature +1 is simply a 10fold increase, the signature of a size 1 planet is more than 6 orders...
and each order is going to add another doubling or so to the range.... so i'd say your 2Pc sensor can detect Earthlike worlds at 2^12 parsecs... and stars are brighter still...
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