--------------- FIDO MESSAGE AREA==> TOPIC: 180 ASTRONOMY Ref: F3500001 Date: 03/02/98 From: TONY DUNLAP Time: 08:02pm \/To: LANCE REYNOLDS (Read 2 times) Subj: Gravity and Black Holes ...and thus spake Lance Reynolds unto TONY DUNLAP: LR> As many here have so adequately pointed out, it takes an LR> infinite amount of energy to make something go c. And, if I LR> understand it right, what ever it was that we boosted over LR> light speed would stop having mass as well. LR> So. We have to use all the energy in the universe to make LR> something go FTL. Relative to what? It's starting point? (Ties into another question I asked). Later Tony Dunlap, (tdunlap@odot.dot.ohio.gov) ...Well, it USUALLY works... --- Maximus 2.02 * Origin: The Outer Limits * v.34+ * 31 gigs * 614-772-5520 (1:2220/10) --------------- FIDO MESSAGE AREA==> TOPIC: 180 ASTRONOMY Ref: F3500002 Date: 03/03/98 From: TONY DUNLAP Time: 12:00am \/To: BARTON PAUL LEVENSON (Read 2 times) Subj: Gravity and Black Holes ...and thus spake Barton Paul Levenson unto Tony Dunlap: TD> On the other hand, I'm not entirely convinced that anything can have an TD> infinitely large or small quantity of anything (mass, TD> density, energy, et.al.). BPL> The number of small children now in the room with me is BPL> zero. Are you sure? BPL> The temperature of an electric current is infinite. Where can I find out more about this? TD> Nothing in our universe violates any physical laws. If TD> it appears to, it just means that we've yet to discover some of TD> those laws. BPL> You're dismissing the supernatural by defining it away. Not dismissing at all. There is only what we understand and what we don't understand. Once we understand something, it is no longer "supernatural". BPL> Beware sweeping overgeneralizations. I saw one the other day, but I ducked into an alley just in the nick of time :^) Later Tony Dunlap, (tdunlap@odot.dot.ohio.gov) ...Well, it USUALLY works... --- Maximus 2.02 * Origin: The Outer Limits * v.34+ * 31 gigs * 614-772-5520 (1:2220/10) --------------- FIDO MESSAGE AREA==> TOPIC: 180 ASTRONOMY Ref: F3500003 Date: 03/03/98 From: TONY DUNLAP Time: 12:00am \/To: SID LEE (Read 2 times) Subj: Gravity and Black Holes ...and thus spake Sid Lee unto Tony Dunlap: SL> I'm not quite sure what you mean by "how it works" but I'll SL> open the dialogue at least. If this doesn't address your SL> question please repost with a more complete description of SL> what you are trying to figure out ;-) I think I got it (now to bribe the weather man for some clear weather). My problem was I couldn't figure out what to do after I aligned it. Once I quit looking at how the telescope "looked" and concentrated on the axes (is that the plural?) it sort-of fell into place. SL> Once the polar axis is properly aligned it means if we turn SL> the mount about the axis at the same rotation rate as the SL> Earth but in the opposite direction we can point the scope SL> or camera at a desired target and it will remain pointed at SL> the target because its motion cancels out that of the SL> Earth. I had to perform a little magic there. I can't see Polaris from my back yard, so I set it up in the neighbor's yard across the alley. Levelled the tripod, adjusted to Polaris, then ran string parallel to the telescope, one end ailed to his back porch, the other to mine. Then I went to where I wanted it along the string and painted a line in the yard. Then I set the telescope on the painted line, re-leveled it, and removed the string. I hope that's reasonably close. I also marked where the tripod's legs are. I'll eventually have to go somewhere I reckon, since my field of view is only about 55 degrees north and south, and about 100 east and west (tall houses, tall trees). SL> If your mount is motorized then it tracks "automatically" by SL> slowing turning the scope about the polar axis. I'm going to try my hand at making one, since all the prices I've seen are prohibitive ($300, as much as I paid for the scope). If I can make something that comes within a couple of percent, for about a tenth the cost, I'll be happy. SL> If the mount is not motorized things will drift out of the SL> field if left to themselves but with a polar aligned SL> equatorial mount you only need to adjust the SL> pointing direction in one "dimension" by nudging the scope SL> "around" the polar axis so motion is smooth and controlled, SL> often through use of a flexible shaft attached to a worm SL> gear that you can adjust easily as you observe your target. That's the part I was having trouble with. I had it basically set sideways to what it should have been. Thanks for your help. Later Tony Dunlap, (tdunlap@odot.dot.ohio.gov) ...Well, it USUALLY works... --- Maximus 2.02 * Origin: The Outer Limits * v.34+ * 31 gigs * 614-772-5520 (1:2220/10) --------------- FIDO MESSAGE AREA==> TOPIC: 180 ASTRONOMY Ref: F3500004 Date: 03/04/98 From: ADAM MAJER Time: 03:02pm \/To: DOUG MCHARG (Read 2 times) Subj: News from Io question DM> LR> Isn't one of Jove's moons full of water? DM>There has been some water detected by the spectrometers I believe, but I dou DM>if any moon is full of it. What about Europa?!? Fulla water! * SLMR 2.1a * Backup not found: (A)bort (R)etry (P)anic --- FMail 0.92 * Origin: The Programmer's Oasis on FIDONET! (1:348/203) --------------- FIDO MESSAGE AREA==> TOPIC: 180 ASTRONOMY Ref: F3500005 Date: 03/04/98 From: ADAM MAJER Time: 03:02pm \/To: MIKE ROSS (Read 2 times) Subj: Expansion Increasing MR>Just found a recent blurb connected to the discussion concerning the MR>universe's expansion rate, as to whether it was slowing, stable, or MR>accelerating: MR>> Anti-gravity surprises astronomers (Science Feb 27, 1998) MR>> A team of American and Australian astronomers seemed to have discovered MR>> a force on cosmic scale that increases the expansion of the universe. MR>> Based on Newton's theory of gravity, the expansion should be limited by MR>> gravity. Measurements seem to point out that far-away objects expand MR>> faster than should. The distance to these far-away objects is not known precisely meaning that the above statement is false. The measurements could be wrong - that goes for the distance and/or for the expansion rate. * SLMR 2.1a * hAS ANYONE SEEN MY cAPSLOCK KEY? --- FMail 0.92 * Origin: The Programmer's Oasis on FIDONET! (1:348/203) --------------- FIDO MESSAGE AREA==> TOPIC: 180 ASTRONOMY Ref: F3500006 Date: 03/03/98 From: JOAN KELLY Time: 06:30pm \/To: ADAM MAJER (Read 2 times) Subj: ABDUCTION Adam Majer wrote in a message to Blackbear: AM> info about extraterrestials than from this echo. And by the way, AM> _all_ FIDONet echos have a policy that real names must be used. Actually, no. It is up to the moderator to include it in his/her rules, or not. I've been in Fido echoes before which have allowed handles. Joan --- timEd/386 1.10 * Origin: TNC - (860) 963-1187 - 2.4kbps-33.6kbps! (1:320/2112) --------------- FIDO MESSAGE AREA==> TOPIC: 180 ASTRONOMY Ref: F3500007 Date: 03/03/98 From: JOAN KELLY Time: 06:30pm \/To: ADAM MAJER (Read 4 times) Subj: ABDUCTION Adam Majer wrote in a message to Blackbear: AM> info about extraterrestials than from this echo. And by the way, AM> _all_ FIDONet echos have a policy that real names must be used. Actually, no. It is up to the moderator to include it in his/her rules, or not. I've been in Fido echoes before which have allowed handles. Joan --- timEd/386 1.10 * Origin: TNC - (860) 963-1187 - 2.4kbps-33.6kbps! (1:320/2112) --------------- FIDO MESSAGE AREA==> TOPIC: 180 ASTRONOMY Ref: F3D00000 Date: 03/03/98 From: JOAN KELLY Time: 06:30pm \/To: ADAM MAJER (Read 2 times) Subj: ABDUCTION Adam Majer wrote in a message to Blackbear: AM> info about extraterrestials than from this echo. And by the way, AM> _all_ FIDONet echos have a policy that real names must be used. Actually, no. It is up to the moderator to include it in his/her rules, or not. I've been in Fido echoes before which have allowed handles. Joan --- timEd/386 1.10 * Origin: TNC - (860) 963-1187 - 2.4kbps-33.6kbps! (1:320/2112) --------------- FIDO MESSAGE AREA==> TOPIC: 180 ASTRONOMY Ref: F3D00001 Date: 03/02/98 From: TONY DUNLAP Time: 08:02pm \/To: LANCE REYNOLDS (Read 2 times) Subj: Gravity and Black Holes ...and thus spake Lance Reynolds unto TONY DUNLAP: LR> As many here have so adequately pointed out, it takes an LR> infinite amount of energy to make something go c. And, if I LR> understand it right, what ever it was that we boosted over LR> light speed would stop having mass as well. LR> So. We have to use all the energy in the universe to make LR> something go FTL. Relative to what? It's starting point? (Ties into another question I asked). Later Tony Dunlap, (tdunlap@odot.dot.ohio.gov) ...Well, it USUALLY works... --- Maximus 2.02 * Origin: The Outer Limits * v.34+ * 31 gigs * 614-772-5520 (1:2220/10) --------------- FIDO MESSAGE AREA==> TOPIC: 180 ASTRONOMY Ref: F3D00002 Date: 03/03/98 From: TONY DUNLAP Time: 12:00am \/To: BARTON PAUL LEVENSON (Read 2 times) Subj: Gravity and Black Holes ...and thus spake Barton Paul Levenson unto Tony Dunlap: TD> On the other hand, I'm not entirely convinced that anything can have an TD> infinitely large or small quantity of anything (mass, TD> density, energy, et.al.). BPL> The number of small children now in the room with me is BPL> zero. Are you sure? BPL> The temperature of an electric current is infinite. Where can I find out more about this? TD> Nothing in our universe violates any physical laws. If TD> it appears to, it just means that we've yet to discover some of TD> those laws. BPL> You're dismissing the supernatural by defining it away. Not dismissing at all. There is only what we understand and what we don't understand. Once we understand something, it is no longer "supernatural". BPL> Beware sweeping overgeneralizations. I saw one the other day, but I ducked into an alley just in the nick of time :^) Later Tony Dunlap, (tdunlap@odot.dot.ohio.gov) ...Well, it USUALLY works... --- Maximus 2.02 * Origin: The Outer Limits * v.34+ * 31 gigs * 614-772-5520 (1:2220/10)