"LIVE FROM THE STRATOSPHERE" P R O J E CT U P D A T E PART 1: Junk Email and receiving the Teacher's Guide PART 2: Juan and the broken mirror (5/7/94) _________________________________________________________________________ Please accept our apologies for the recent spate of messages from people introducing themselves and asking questions. The maillist software had not been configured to block these types of messages. This has now been corrected and you should now only be receiving LFS project news or journals from Kuiper personnel over the updates-lfs list. Later in the project (mid-September), there will be opportunities for teachers to meet one another and to discuss topics of mutual interest. There seems to be some confusion about the printed Teacher's Guide. Some folks were worried because they hadn't yet received theirs in the mail. Fear not! Nobody has yet received the document because it is still being developed. When complete, the Guide will be mailed along with other goodies (including heat sensitive paper, a NASA poster and special eye glasses) to the folks who sent in their $10. This package is expected to begin shipping shortly after Labor Day (in early September). As we said in the last update, the Teacher's Guide will be available online a week or so before it ships. Please be aware that registering for the printed Teacher's Guide package is a completely separate process from signing up to receive online updates. If you sent in ten dollars, that does not mean you will be placed on this "updates-lfs" maillist. Likewise, you will not automatically receive a printed Teacher's Guide package just because you signed up for the maillist. To receive the package, send a check for $10 to: Live From the Stratosphere, PO Box 1502, Summit, New Jersey 07902-1502. To receive updates online, send a mail message to In the message body, write these words: subscribe updates-lfs Thanks for your patience during the recent confusion. _________________________________________________________________________ [Editor's note: The passage below continues a series of journals from last year as a preview of what is to come] -= Flight Log for KAO 5/7/94 (Second flight in Hawaii Deployment) =- Juan Rivera - Airborne Telescope Operator Off the ground at 0655Z (2055 Local Time) On board tonight we have a total of 13 people: 3 Flight Crew 5 Scientists 1 Mission Director 2 Computer Operators 1 Tracker Operator 1 Telescope Operator (Me) We're going to be held to 27,000 for a while by Air Traffic Control for some reason. The flight crew will have to deal with that when the time comes. 0709Z We're passing through 26,000 feet already. I've shut off the flow of liquid nitrogen which is used to pre-cool the telescope cavity. We do this for several reasons: First of all the nitrogen boils off to a very cold dry gas which displaces the moist air in the cavity. We want the atmosphere in there to be free of any water vapor so it won't fog up the optics and freeze there. Also, we cool the cavity with a huge portable air conditioner and the liquid nitrogen so that it will be cold when we open the aperture door and expose the optics to the ambient temperature at altitude. The mirror started out... Oops... Got'a run!!!! 0749Z Hmm... We'll I spent the last 20 minutes or so attempting to repair a problem with our oscillating secondary mirror. It has been very unreliable lately. Tonight when I turned it on, it blew the main fuse in one of the power supplies that power it. All I could really do in flight was to re-seat all the circuit boards and hope that the problem was being caused by an intermittent connection. Last time this happened I was a hero because I was able to save the mission. This time I was not so lucky. We are now headed back home and the mission has been aborted. We'll try to get hold of the day crew technicians and see if they can spend some time tonight working on it. Most likely it will be tomorrow before anything can be done. Last time this happened I found two wires that had been pulled out of the back of a connector on the rear of the chassis. The only problem was that neither wire had anything to do with the problem! It was like trying to find out why your car wouldn't start and finding a loose wire that went to the tail lights. It's nice that I found it, but... Anyway, by the time the two broken wires were fixed the problem had mysteriously gone away. It's very very difficult to fix a problem that won't stay bad. We call those "intermittents". Maybe this time the OSM will stay bad. We call that "inoperative", or "inop" for short. Did you get all that? There will be a test later in the week! 0809Z Time to bag this and secure all the loose equipment and prepare for landing. More next time...