What would it look like?
Posted: 2004-02-21 12:38am
What would an ISD look like whaen orbiting an earth like planet? Could we see it in the day?
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I'm seeing a shitload of panicking people and governments.Howedar wrote:An ISD in LEO (say 160km) would appear to be about twice as long as the moon is wide if my math is right.
A 1.6 km object would appear that big at 160 km?Howedar wrote:An ISD in LEO (say 160km) would appear to be about twice as long as the moon is wide if my math is right.
Oops, forgot to double one of the angles. The ISD would appear slightly longer than the moon is wide.Rogue 9 wrote:A 1.6 km object would appear that big at 160 km?Howedar wrote:An ISD in LEO (say 160km) would appear to be about twice as long as the moon is wide if my math is right.
Not according to WEG stats, but in DE2, the Invincible was hovering just above Nar Shaddaa's control tower.GySgt. Hartman wrote:Does an ISD have the ability to descend this far into the atmosphere?
That wasn't an ISD though, and the Impression I got was that the control tower was a space elevator, with the rest of the towers touching the upper reaches of the atmosphere.nightmare wrote:Not according to WEG stats, but in DE2, the Invincible was hovering just above Nar Shaddaa's control tower.GySgt. Hartman wrote:Does an ISD have the ability to descend this far into the atmosphere?
What are the calcs for determining something's apparent size from its distance, and it's distance from its apparent size?Howedar wrote:An ISD in LEO (say 160km) would appear to be about twice as long as the moon is wide if my math is right.
The amount of air at 160km is quite negligable. I see no reason why an ISD could not orbit there.GySgt. Hartman wrote:Does an ISD have the ability to descend this far into the atmosphere? AFAIK Victories can only enter the upper levels of a planets atmosphere, which sets a lower limit of 50 - 80 km, depending on which model you use.
The exosphere, which is still part of the upper level of the atmosphere begins at ~600km. So I doubt that an ISD could descend lower that ~600 km.
At 640 km, it would still appear to be be about a quarter as long as the moon, thus being quite visible. If you want to impress people, use a Victory and have it descend to ~90 km, where it would appear to be moon-sized (if it's not covered by clouds).
Simple trigonometry.What are the calcs for determining something's apparent size from its distance, and it's distance from its apparent size?
That was an Allegiance? It looked like an ISD to me.Ender wrote:That wasn't an ISD though, and the Impression I got was that the control tower was a space elevator, with the rest of the towers touching the upper reaches of the atmosphere.nightmare wrote:Not according to WEG stats, but in DE2, the Invincible was hovering just above Nar Shaddaa's control tower.GySgt. Hartman wrote:Does an ISD have the ability to descend this far into the atmosphere?
Is there such a thing?Simple trigonometry.
How about "because the ISB said so"?Howedar wrote:The amount of air at 160km is quite negligable. I see no reason why an ISD could not orbit there.
Stated to be a Star Destroyer and looks like an ISD. The control tower was only sucked up to the ship as the spine broke off. It was ground connected alright.Ender wrote:That wasn't an ISD though, and the Impression I got was that the control tower was a space elevator, with the rest of the towers touching the upper reaches of the atmosphere.nightmare wrote:Not according to WEG stats, but in DE2, the Invincible was hovering just above Nar Shaddaa's control tower.GySgt. Hartman wrote:Does an ISD have the ability to descend this far into the atmosphere?
That doesn't fit any definition of a space elevator I have seen. A skyhook is a space elevator. The control tower was a building with a thin spine. Nor did either the ship or the tower suffer from decompression when it was ripped off and sucked crashing into the ship, needle first.Illuminatus Primus wrote:Yeah, and that disproves his point how? Space elevators are ground-connected; he was just saying that the towers and buildings in the control tower's vicinity reached to low-orbit.
No, a skyhook is moored by a space elevator.nightmare wrote:That doesn't fit any definition of a space elevator I have seen. A skyhook is a space elevator. The control tower was a building with a thin spine. Nor did either the ship or the tower suffer from decompression when it was ripped off and sucked crashing into the ship, needle first.
Meh, the cable is only part of a space elevator.Illuminatus Primus wrote:No, a skyhook is moored by a space elevator.
Because this wasn't a combat situation for it, and that fricken needle punched right through the very dense armor like a bbq spit through a chicken.Illuminatus Primus wrote:Why would the ship experience decompression? Hits on ISDs don't cause major decompression, and the giant tower would punch through very dense armor; I doubt there'd be much gap for escaping air, even disregarding magcon fields, which seem to be basic technology.
We do. We also know they don't reach into orbit. Skyhooks do, and they float above the regular cityscape. That's one of their main points.Illuminatus Primus wrote:So, we know they can build, and do build super-high structures.
By WEG. You would do better to claim that this particular ISD was an exception to the rule.Illuminatus Primus wrote:We know the ISD isn't supposed to be able to enter the atmosphere.
I go the other way around - I form my conclusion based on the evidence at hand.Illuminatus Primus wrote:In order to resolve the apparent contradiction, which one bends? I think this is quite obvious.