Subject: problem with satellites on AutoStar Sent: Thursday, March 29, 2001 14:29:01 From: firstname.lastname@example.org (Clay Sherrod) To: email@example.com (Richard Seymour) Hi Dick...got a question right up your alley. This is a peculiar one. Today I was checking for passes of Hubble and went to my AutoStar which I loaded with asteroids, comets and satellites when A2.4 came out (still on v2.1ek) and went into the Object/Satellite and selected Hubble. I have done this a dozen times (all different satellites) in the past three weeks. Today I punched in Hubble which went to the screen top and pressed "Enter," "ELEMENTS EXPIRED" came up immediately, followed by: "NO PASSES SOON." Well, I thought maybe some parameters had changed that the AutoStar "knew" would and therefore new loads on Hubble might be necessary... So I pulled up another , and another and went through my entire list (a complete download from the A2.4 library when I uploaded last) and every one of them came back with the same messages! Just last week Patsy and I had successfully pulled in a couple from the list with no problems.... What gives? Have you ever heard of this before? Now, here's the clincher: I DID do a "Reset" early last week because I had a major electrical glitch (the same one that fried my server) and I thought a reset might be in order then. So, because of that I decided to see if maybe I had lost my asteroids or comets (I do not yet have any "User Objects" loaded). ALL OF MY ASTEROIDS AND COMETS ARE THERE....they have NOT changed, just the SATELLITES! Well, I called Meade and got a lady who really had no idea which end of a telescope went "up" and she explained to me that ALL DATA in A2.4, v2.1ek, was LOST when a reset was done. I argued with her (politely) and told her that my comets and asteroids were still there, that only my SATELLITES had disappeared, or were affected by "Elements Expired." She said that is correct. The everytime a RESET is done from here on out, all ephemeride data that had been entered on upload is lost and must be re-entered. Is this correct? If so, then why did I NOT lose the comets and asteroids. HELP! I want my satellites back! Is this an AutoStar problem or is she correct about the reset? If that is the case that is going to be a major pain for ALL ETX and LX 90 users everytime they need to reset because of mechanical problems. If I need to re-load (if she is correct) I will trust you and do just that (I hope....) However I did not want to attempt until I received the "spoken word" from our AutoStar guru.. Please explain the difference in the AutoStar library between asteroids and comets and that of satellites that would make the latter disappear but not the first two. thanks - more complications of life press on. CLAYAnd:
From: Richard Seymour (firstname.lastname@example.org>) Clay, The satellites are not "gone" from your Autostar (else, how would it offer Hubble for you?) They're "expired"... too bloody old! (about a year, if i remember correctly) What it's obliquely asking you to do is update the orbital parameters. Which you can do in two useful ways, and two useless ways. Useless number one: reinstall v21eK with A2.4. Why useless? becuase Meade packaged in obsolete orbital parameters. they don't magically updated them. Useless number two: fetch the orbital parameters from that tempting link on Meade's Support/Download page (go ahead... try it...) They -never- update that stupid page/link... Now that we've shot those two down, let's move on to useful: Useful one: (my usual, for onesy-twosy updates)(also available in a variety of formats under Mike's Autostar Info page) (if you visit the -newest- sat tracking item there, the below is explained... in full (fuller than here)) Visit http://www.heavens-above.com tell it where you live it'll offer a wealth of links, click on "satellites < 4.0 mag" it'll show tonight's passes click on the time in the cente column for a satellite it'll show sky charts for the pass. On -that- page, in the upper right-hand corner, is a link to: orbit. click it. On -that- page, below the globes, is/are the Two Line Elements (TLEs) that Autostar wants. See above mentioned Mike page for how-to-decrypt. Now hie thyself to the Autostar. Select > Object > Satellite > whoa.. if it's a satellite the AS already knows about, we scroll up to EDIT. If it's a new one, we scroll down to ADD. Press [enter] and (either) select the sat to edit, which brings you to: type/edit the name enter the numbers. That'll give the Autostar fresh numbers, and you're off and rolling Useful Two: visit an up-to-date satellite TLE site, fetch the file. My fave is http://www.celestrak.com There are nasa sites, too... but this one has more stuff. Choose the grouping category you wish (visible, amateur,, etc.) and use the Save As... feature of your browser (use the other mouse button). Copy that file. (backup in case next step corrupts it) Open that saved file with a text-editor... preferably one which does NOT auto-wrap Pause and ask thyself: do i want -all- of those to go to the Autostar? If so, continue. If not, make a copy, and then edit away the 3 lines per satellite you'll find in there (Name, and two data lines) of the ones you -don't- want. (just like Asteroids, just like Comets) Connect AS to PC, fire up Updater. Click it to [GET ephemerides from Autostar] When the dust settles, and you're facing the "main screen", drag-and-drop the TLE file you just fetched onto the [Satellite] button in the main screen. The [SEND ephemerides to Autostar] probably just became available. Pause and ask thyself: do i want -all- of those to go to the Autostar? If you wish, you could now press the [satellites] button, and you'll be in the editor... you can choose the ones you want (they'll show (handbox) in front of the name if they're slated for Autostardom.) ^-- i used parens here in case your mailer misinterprets > angle brackets. If you drop into the editor, clik [finish] to escape back to the main screen. Ready? Well, even so... now's the time to click the [SEND ephemerides to Autostar] button. And that'll shovel the updated satellite TLEs to the Autostar. It'll perform a power-up Initialization as you leave the Updater. You do -not- need to RESET or reTRAIN or reCALIBRATE if the only button you clicked was [get] and [send] ephemerides. Now you see why i like "useful one"... can be performed from scrap of paper clenched in teeth in howling gale at observing site... simple, n'c'est pas? have fun --dickAnd from Clay:
Dick - I knew that if anybody knew, you would. By the way I just off the phone with Meade again and talked to a guy in the LX 200 support group. He said that "Amy" was totally wrong about that issue, that a RESET never took away any data except for user information and date, telescope type, etc.....all parameters in the A.S. library are maintained as I thought (I have reset too many times and this has never happened). You explanations of "Elements Expired" is clear and makes perfect sense. I choose the one-at-a-time into AutoStar approach; what you are saying is that I can go ahead and dial up the "dead" Hubble for example that is still showing up on A.S., scroll under it to "Edit" and enter the parameters right there on the AutoStar from the lines you mentioned? Thanks again! CLAYAnd:
From: email@example.com (richard seymour) Yes! --dick
Return to the top of this page.
Go back to the Autostar Information page.
Go back to the ETX Home Page.