April 2, 2001 (11:00a.m.-11:45 a.m.)

Jack Dunn from the University of Nebraska in Lincoln and the Mueller Planetarium Coordinator chats with several classroom groups representing Grand Island Public Schools, Omaha Public Schools, and Westside Community Schools.



Welcome to eSchool!

Tom Albertsen: Greetings from the ABC Building at Westside Community Schools.

Tom Albertsen: I'm going to push a web site to test the system.

Colette deFrey: Hello, Dr. Dunn- I'm receiving your website

Tom Albertsen: http://communitydisc.westside66.org

Jack Dunn: Colette: Don't call me Dr. Dunn. I'm just Jack

Colette deFrey: Remember, during the chat Dr. Dunn will need to direct the students where to go.

Jack Dunn: If you call me Dr. Dunn again - I'm going to take my stuff and go home(g)

Tom Albertsen: Hopefully you are seeing the CD web site.

Colette deFrey: OK, Jack!

Patty McArdle: www.spacelaser.com

Wanda Duff: Northwest has logged on successfully on one machine so far. Hopefully the others

will respond by the time students arrive at 11:00

Jack Dunn: Colette did you get my vitae information I sent you in e-mail and did you have time to

look at it?

Jack Dunn: www.spacelaser.com/jdunn.html

Jack Dunn: Just sent you to where we can start

Colette deFrey: No, Jack, I did not receive the vitae info

Jack Dunn: It went out in e-mail Saturday to you marked highest priority

Jack Dunn: You will note lots of links on the page I put up for you. These are there so I'll have the

URLs handy and also someone

Jack Dunn: could click on them to go to the sites

Colette deFrey: Great idea!

Colette deFrey: I did check email and I did not receive it. I'll check again

Colette deFrey: I see that Patty, Wanda, Deb, Donna Johnson, Barb Bohlken are on

Colette deFrey: We are looking for Jill Klingman, Janet Schutz, Tahnee, and Ken

Colette deFrey: Jack, You will have to reenter the URL for your page when they all get on

Jack Dunn: Erik is here. I know about that

Janet Schutz: http:/www.spacelaser.com

Jack Dunn: Actually the one you want is

Colette deFrey: Welcome Janet!

Donna Wroten: Tahnee group 1 is here

Colette deFrey: Hello, Tahnee!

Donna Wroten: Hi

Donna Wroten: what other schools are here

Colette deFrey: In this chat we have Sunset, Grand Island, Underwood, Loveland, WMS, and

Northwest H.S.

Donna Wroten: wow

Donna Wroten: when is the guy going to be online?

Donna Johnson: HI Dr. Dunn! This is Luci Frerichs and Xiao Cheng from Underwood Hills! We have

a few questions to ask you.

Colette deFrey: We are going to take our first question from Mrs. McArdle's group, so plese get



Jack Dunn: First things first - I'm not Dr. Dunn - I'm just Jack

Jack Dunn: And I'm ready whenever Collette says so

Colette deFrey: We will wait one more minute!

Tahnee Nowak: Tahnee's group 2 is on

Colette deFrey: Ken has joined us! Welcome!

Jack Dunn: want me to give that URL again?

Colette deFrey: Yeah

Jack Dunn: www.spacelaser.com/jdunn.html

Colette deFrey: Welcome to our eschool chat with Jack Dunn of the Mueller Planetarium in Lincoln.

Colette deFrey: Mrs. McArdles group may go ahead and put out a question

Colette deFrey: OK, is MRs. Bohlken's class ready to enter a question?

Barb Bohlken: Hello Dr. Dunn. This is Tommy Struble and Katelyn Jackson. This is our first

question. In 2010 will another space telescope possibly be launched?

Patty McArdle: Hello Dr. Dunn, We would like to know how many corrective lenses were used?

Colette deFrey: Go ahead and answer Barb's first

Jack Dunn: Well now we've got two questions. So I'll go with the first one. The Next Generation

Telescope is scheduled for around that time. However Hubble has been doing very well.

Colette deFrey: How many corrective lenses wre used?

Jack Dunn: The Next Generation scope will be essentially a telescope that sees in the infra-red that

is light waves below the red we see with our eyes.

Jack Dunn: Now as to corrective lenses - it is a corrector plate of one piece

Colette deFrey: OK, Mrs. Schutz's group

Jack Dunn: And that's on the current Hubble. Next Generation scope won't need it - we hope

Patty McArdle: Mr. dunn, what will the teloscope be named

Janet Schutz: We are running behind. I will get my student--sorry!

Colette deFrey: OK, Tahnee's group go for it

Jack Dunn: Right now it's just the Next Generation telescope. It may have a name later.

Sally Calhoun: I ike arats

Jack Dunn: Want to while you are thinking of questions go visit some hubble and astronomy sites?

Becky Sharpe: How far will the next telescope see?

Donna Wroten: Group one or two?

Tahnee Nowak: Hey Jack, were you looking for a specific thing when you sent up the telescope?

Ken VonSeggren: What will happen to the hubble space telescope after it comes down to earth?

Jack Dunn: will cause it to heat up and be destroyed. A few parts might make it through but they

usually target those to fall in the ocean.

Colette deFrey: OOPS! Please go ahead and answer Wanda's question. Sory!

Shawn Blevins: hi this is travis erin and kirsten we have a question, what is the most interesting pic.

the hubble telescope has sent?

Janet Schutz: We are ready Colette with our first question.

Jack Dunn: The purpose of research with anything like the Hubble is not to prove or disprove but to

further basic knowledge. We always expand the amount of information we have. In general,

Hubble has let us have a better look at star formation. But there are so many other things such as

Galaxy formation and how it works.

Colette deFrey: Please wait, Janet. Jack is answering Wanda's question. Then we'll get to yours

Colette deFrey: OK, Janet. Go for it!

Janet Schutz: how does a spectrometer work?

Jack Dunn: Bacically, light has various lengths to the waves of light. If you've seen a prism separate

the colors in sunlight you're on your way to seeing what a spectrometer does. It separates the

different wavelengths of any light given it. From these we can actually tell what elements and in

what amount are in the star sending out the light.

Colette deFrey: OK, Patty's kids want to know what is the most interesting photo the Hubble has


Ronal Sykes: This is derek and allison. Will the next tellescope be bigger then the hubble?

Colette deFrey: Ignore that question. Please answer the one I just sent. Thanks!

Jack Dunn: Interesting to whom? That's the question. What I might find interesting might be

different from what a quasar researcher might find interesting.


Colette deFrey: OK, Barb's kids can enter a question

Barb Bohlken: What other types of space telescopes have been launched besides the Hubble?

Jack Dunn: Probably the most popular picture among Planetarium professionals is the picture of

the Deep Field because there are so many galaxies in it.

Colette deFrey: Jack, go ahead with Barb's question now.

Jack Dunn: There are telescopes that see in different specific wavelengths. For instance there

have been telescopes for Cosmic Rays and infra-red telescopes

Colette deFrey: OK, Tahnee's group sent one qustion

Tahnee Nowak: thanx

Donna Johnson: How important was brainstorming to the Hubble project?

Jack Dunn: I'm not sure what you mean Donna. Any complex spacecraft takes years of planning.

Colette deFrey: Ken VonSeggern's group is next

Ken VonSeggren: does it take longer to take a picture of an object farther away compared to an

object closer to earth?

Jack Dunn: Note that I sent you to the Main hubble site

Donna Johnson: For instance, when they discovered that the lense wasn't working...did

brainstorming to solve the problem occur?

Colette deFrey: After the chat is over, we will make available to the teachers and students a copy of

the chat which will include the URL's!

Jack Dunn: The fainter the object the longer the exposure just like taking pictures on Earth.

However, remember that some objects are brighter than others of equal distance and some a

brighter at a far distance than some closer objects so they might take LESS time for an exposure

Jack Dunn: Back to Donna's question

Jack Dunn: Like any problem-solving technique, many people at both the contractors and the

mission offices are brought in to solve

Colette deFrey: Wanda's kids are next up with a question!

Wanda Duff: Has Hubble been able to see or analyze any quasars?

Jack Dunn: a problem. I don't think its correct to exactly call it brainstorming because this isn't just a

bunch of people in one room.

Jack Dunn: There are teams involved with the project and they would work on it.

Jack Dunn: Now off to the quasars. Certainly Hubble sees them and has imaged them.

Donna Johnson: Thank you

Colette deFrey: Janet, you're up!

Janet Schutz: How many people worked on the Hubble?

Jack Dunn: I'm wondering if you have me mixed up with Martin Gaskell our quasar researcher here

on campus. He has used Hubble

Jack Dunn: exactly for that.

Colette deFrey: OK, Patty's group is next. one question

Ronal Sykes: this is derek and allison, will the the next tellescope be bigger that the hubble?

Jack Dunn: I have no idea how many people worked on the Hubble. It must be hundreds or

thousands because you have all the contractors and the spacecraft specialists and also the launch

facilities and then all the people at Space Science Institute

Jack Dunn: The next Generation scope will be a bit bigger - but that really isn't a clue to it's nature. It

will be more of an infra-red telescope. The reason is that the light from the most distant objects is

shifted to the red and infrared so if we want to see really far and back in time, that's the part of the

light we want.

Colette deFrey: Barb's group is up next.

Jack Dunn: www.spacelaser.com/jdunn.html

Barb Bohlken: How far along are you in making the next telescope?

Jack Dunn: amazing-space.stsci.edu

Donna Wroten: Colette, may Donna Wroton's students ask a question please; we have not yet.

Jack Dunn: http://amazing-space.stsci.edu

Colette deFrey: Donna Wroten's kids are scheduled from 1-1:45 today

Donna Wroten: okay thank you

Jack Dunn: Amazing space is a great educational site for kids at Space Telescope Institute started

by a friend of mine John Stoke at STSCI

Colette deFrey: How far along are you in making the next telescope?

Jack Dunn: Are we going to Barb now?

Jack Dunn: I've sent you to a set of pictures of peope working on the Gemini Telescope project.

Gemini is one of the new generation ground-based observatories. Larry was a student here at the

University and was our president of the local astronomy club. He was always interested in optics

and built some projectors I still use today.

Colette deFrey: Will there be a telescope stationed on the surface of the moon?

Jack Dunn: Then he went on to be the designer and manager for the optical systems for two giant

telescopes - the Gemini North and South - In Hawaii and South America

Jack Dunn: www.spacelaser.com/jdunn.html

Jack Dunn: www.gemini.edu/dedication/dedication.html

Jack Dunn: You can now see some of the first photos taken by the Gemini telescope in Hawaii. My

point is how students in Nebraska can go on to make a big contribution in astronomy

Colette deFrey: These are some excellent sites that the kids can explore later! Incredible photos!

Colette deFrey: So do you think there will be a telescope stationed on the surface of the moon


Jack Dunn: Now back to the question about a telescope on the Moon. There are no current plans

for this although Astronomers would like it. Actually, what they would like would be a Radio

Telescope on the far side of the Moon so it would be far away from Earth interference.

Ken VonSeggren: This is Marty and Lauren; Did you know that our 7th grade science teacher, Mr.

Von Seggern, was a classmate of yours at Midland College?

Jack Dunn: Yes I do. that name sounded familiar

Colette deFrey: Wanda Duff is next

Wanda Duff: Have the Hubbles pictures been enhanced with false color?

Jack Dunn: www.spacelaser.com/jdunn.html

Jack Dunn: Hubble photos are sometimes not natural color as it depends on what information

astronomers want to take from them.

Colette deFrey: Janet Schutz' s class is next

Janet Schutz: Has the Hubble ever identified a black hole?

Jack Dunn: Also if you view something in the light of different wavelengths you will bring out details

of the chemistry of the object

Jack Dunn: Not sure what you mean by identified. Hubble has imaged lots of black holes. But

remember what you see in the image is not the black hole where no light can get out. What you

see it the radiation surrounding the black hole being thrown out into space

Colette deFrey: Wow! We've covered LOTS of questions today. Each group got to ask three.

Since it's time to wrap up, our last question comes from Dr. Ken Bird, Supt of Westside Schools.

Colette deFrey: His question is what potential do you see from this eschool software? What

applications do you as a scientist see for education?

Jack Dunn: Remember Astronomy Day this Saturday. Details on our planetarium web site and

Nagin Cox is our speaker from JPL

Donna Wroten: Except the for loveland, group two, we didn't get to ask any questions

Colette deFrey: You'll have to come in as scheduled this afternoon from 1-1:45. Sorry

Jack Dunn: I'm an educator not a scientist per se. But what I see it that it is great to talk to so many

students and teacher at once. It's like being able

Jack Dunn: to address a thousand convocations at once!

Colette deFrey: Thanks to all teachers and students who participated today. Excellent qustions!

You kids did your research!

Al Vap: thanks for having us, see you on april 18!

Sally Calhoun: thank you

Sally Calhoun: goodbye

Colette deFrey: And a big thank you to Dr. Jack Dunn

Tahnee Nowak: thank you

Wanda Duff: Thanks for this exciting experience!

Colette deFrey: And a big thank you to Dr. Jack Dunn

Tahnee Nowak: thank you

Wanda Duff: Thanks for this exciting experience!

Ken VonSeggren: thank you very much, this was very fun and exiting

Sally Calhoun: we really enjoyed reading your responses!

Colette deFrey: I will copy and print this chat for everyone!

Colette deFrey: Remember, to log out, go to FILE and down to QUIT

Back to the Chat Home Page