SEDSAT-2 Meeting Transcript 20061231
From SEDSWiki
- Tom Nordheim says:
hi
- Michael Jensen says:
golden... that is lavina no?
- Tom Nordheim says:
yeah
- Michael Jensen says:
or her friend?
- Michael Jensen says:
hi lavina!
- Michael Jensen says:
so should we start and others may or may not join?
- Lavina Parwani says:
hey
- Tom Nordheim says:
Kirk told me to lead this meeting while he was away, so perhaps we should just start....I don't think there will be any other now
- Michael Jensen says:
...
- Tom Nordheim says:
- others
- Amrut Yalagi says:
just now i have messaged to kirk .. so let's wait and see
- Michael Jensen says:
I have messaged geoff...
- Tom Nordheim says:
he told me he would be on the road today
- Tom Nordheim says:
kirk that is
- Michael Jensen says:
geoff is probably sleeping or getting brekfast... probably breakfast..
- Amrut Yalagi says:
ok, let's start
- Michael Jensen says:
dito.
- Tom Nordheim says:
perhaps we should discuss the meeting times first?
- Tom Nordheim says:
are we all agreed on saturday now?
- Michael Jensen says:
sure. I think we has 4:30 gmt saturday?
- Lavina Parwani says:
4:30 GMT
- Lavina Parwani says:
yep
- Lavina Parwani says:
I agree with that.
- Amrut Yalagi says:
ok, kirk received my message
- Michael Jensen says:
that's three of us... I suppose that that is quorum...
- Lavina Parwani says:
haha
- Amrut Yalagi says:
ahaha
- Lavina Parwani says:
I think everyone should agree
- Tom Nordheim says:
Kirk also suggested having a rotating meeting schedule, so that it would be good for everyone at some point,,
- Michael Jensen says:
rotation by week, or more than one meeting per week?
- Lavina Parwani says:
Oo, I like that
- Michael Jensen says:
depends on how active we are...
- Michael Jensen says:
this project seems to go fast in general...
- Lavina Parwani says:
I think it depends on how much we finish by Jan 13
- Amrut Yalagi says:
it has too
- Michael Jensen says:
now that the holidays are over ;(
- Amrut Yalagi says:
we need to decide a lot
- Tom Nordheim says:
yes, we will definetely need to have more meetings
- Michael Jensen says:
my faces are al screwed up...
- Tom Nordheim says:
eh what?
- Michael Jensen says:
forget it.
- Michael Jensen says:
so it seems we need to look no further than the 13th...
- Lavina Parwani says:
the problem with more meetings is finding another time where everyone can make it
- Michael Jensen says:
and bust our asses to get it done for then.
- Michael Jensen says:
this is supposed to be the solution!
- Lavina Parwani says:
?
- Tom Nordheim says:
yeah, I think it might potentially create even more hassle in some ways
- Michael Jensen says:
more meetings=better! ?? right?
- Tom Nordheim says:
yeah that wasn't what I was talking about
- Michael Jensen says:
unlikelly that everybody will make it to each one ...
- Tom Nordheim says:
so when do you think we should have the next meeting then?
- Michael Jensen says:
E-mails work great anyways, right?
- Tom Nordheim says:
before next saturday?
- Lavina Parwani says:
i like emails too
- Amrut Yalagi says:
yes, we should have next meeting in time
- Michael Jensen says:
how about wendsday evening... 1:00 gmt...
- Tom Nordheim says:
I can do that.....1300 GMT
- Amrut Yalagi says:
me too
- Michael Jensen says:
I ment 1 in the morning... 1am gmt
- Tom Nordheim says:
yeah sure
- Tom Nordheim says:
0100 GMT that is
- Michael Jensen says:
that's 8:00 pm for me wendsday, -5 hours...
- Lavina Parwani says:
9 AM for me
- Lavina Parwani says:
I can't promise, but I'll definitely try
- Tom Nordheim says:
ok
- Michael Jensen says:
so will we all...
- Lavina Parwani says:
hehe
- Michael Jensen says:
I don't really know what my schedule will be, so hopefully I can make it
Amrut has left the conversation.
- Lavina Parwani says:
Yeah. I might have to go to school for the solar car
- Michael Jensen says:
one down, 3 to go...
- Michael Jensen says:
well, solar cars -are-cool...
- Lavina Parwani says:
haha
- Lavina Parwani says:
yeah
- Michael Jensen says:
1 up 4 to go..
- Lavina Parwani says:
???
- Michael Jensen says:
so back to business?
- Lavina Parwani says:
yes
- Lavina Parwani says:
what's on the agenda?
- Tom Nordheim says:
ok, the ground subsystem
- Michael Jensen says:
I have some questions,
- Michael Jensen says:
but tom is in charge so...
- Tom Nordheim says:
yeah go ahead
- Michael Jensen says:
that's you lav..
- Lavina Parwani says:
Well, at the moment yes
- Michael Jensen says:
ground...
- Lavina Parwani says:
But hopefully this item being on the agenda means that we're going to reassign it
- Tom Nordheim says:
yup
- Michael Jensen says:
ok
- Tom Nordheim says:
does everyone here have a subsystem now?
- Michael Jensen says:
power...
- Michael Jensen says:
but I would like to change...
- Michael Jensen says:
what does ground involve?
- Lavina Parwani says:
What's Amrut's subsystem?
- Lavina Parwani says:
the ground station
- Michael Jensen says:
beyond the obvious?
- Lavina Parwani says:
haha
- Lavina Parwani says:
It is responsible for communicating with the satellite
- Michael Jensen says:
...
- Lavina Parwani says:
calculating windows of communication
- Amrut Yalagi says:
not yet
- Tom Nordheim says:
well building the ground station is quite a lot of work actually
- Lavina Parwani says:
Calculating doppler shift
- Lavina Parwani says:
etc
- Michael Jensen says:
we have to -build- the bround station???
- Tom Nordheim says:
consider if you have auto-tracking antennas and things like that
- Lavina Parwani says:
well the subsystem lead for the actual building of it has to build it
- Lavina Parwani says:
but as Phase A subsystem leader, you just have to research on it and write up your views and recommendations
- Michael Jensen says:
ok... so what does a ground station actually consist of?
- Michael Jensen says:
the building, or the stuf in it?
- Lavina Parwani says:
both
- Tom Nordheim says:
amrut, what is your subsystem?
- Michael Jensen says:
this is crazy!
- Lavina Parwani says:
well, it is a big responsibility
- Michael Jensen says:
this is becoming more than just a 10x10x10 cube! it's a building and control center as well!
- Lavina Parwani says:
of course
- Amrut Yalagi says:
i had talked to one university for ground station and they too agreed to support
- Amrut Yalagi says:
so i need some more time to work on it
- Lavina Parwani says:
no point in having a satellite if you can't communicate with it
- Lavina Parwani says:
That's amazing, Amrut
- Michael Jensen says:
of course... groan... we are getting back on the same planet, apparently...
- Lavina Parwani says:
haha
- Amrut Yalagi says:
right now my Prof is back frm US.. so i can talk to him toomm abt ground station
- Tom Nordheim says:
would you be willing to do the ground segment amrut?
- Lavina Parwani says:
Nice
- Michael Jensen says:
what is your subsystem currently, amrut?
- Lavina Parwani says:
ooh The research and the cost analysis and the section in the Mission Feasibility Study?
- Amrut Yalagi says:
if everything goes well then i can
- Lavina Parwani says:
Amrut, you have the research I sent you about ground stations right?
- Michael Jensen says:
what was your original subsystem, amrut?
- Lavina Parwani says:
he didn't have one
- Michael Jensen says:
right...
- Michael Jensen says:
so this works out perfectly!
- Amrut Yalagi says:
yes, I have it and tomm i going to submit to my prof. so let's see wht i can do
- Lavina Parwani says:
awesome
- Michael Jensen says:
way to go amrut!
- Tom Nordheim says:
cool
- Amrut Yalagi says:
ahahah
- Michael Jensen says:
how many others do we have without subsystems?
- Amrut Yalagi says:
as our college has some funds so i think they can do it
- Lavina Parwani says:
I think Jay has none either
- Michael Jensen says:
so, what next?
- Michael Jensen says:
is jay here with us?
- Amrut Yalagi says:
no
- Michael Jensen says:
ok I have a question... 2...
- Tom Nordheim says:
ok
- Michael Jensen says:
I have done some work on power, it is on the wiki and in the MFS
- Michael Jensen says:
is it sufficient, or way un-acceptable?
- Michael Jensen says:
I haven't found cost info on batteries yet as I don't know if the prices will change if they are rated for space
- Lavina Parwani says:
YOu can email the company, Mike
- Michael Jensen says:
if the volume/mass decreases or not...
- Michael Jensen says:
I did
- Tom Nordheim says:
that looks very good in my opinion at least
- Lavina Parwani says:
Cool
- Michael Jensen says:
awesome!
- Michael Jensen says:
one of the reasons there is not much more up there
- Amrut Yalagi says:
nice
- Michael Jensen says:
is that there is not a whole lot to the subsystem
- Michael Jensen says:
I can't see there being any major change from the other satellites
- Michael Jensen says:
unless we try some radically different technology
- Tom Nordheim says:
I know that for the Norwegian ncube satellites it included a seperate avr controller for the power management
- Michael Jensen says:
seperate avr controller?
- Tom Nordheim says:
we might decide that we need something like that here too.
- Michael Jensen says:
what is it?
- Michael Jensen says:
briefly...
- Tom Nordheim says:
it is an 8-bit microcontroller from a company called atmel
- Tom Nordheim says:
well not necessarily 8-bit
- Tom Nordheim says:
but these were 8 bit
- Michael Jensen says:
something that regulates everything, an integrated circuit?
- Tom Nordheim says:
well yes essentially
- Michael Jensen says:
ok.
- Tom Nordheim says:
2 secs
- Michael Jensen says:
does that level of detail enter into the phase a analysis?
- Tom Nordheim says:
http://www.ncube.no/project_documents
- Michael Jensen says:
thank's
- Lavina Parwani says:
I think, Mike, that as much detail as you can provide would be best
- Michael Jensen says:
I will add stuf about integrated circuits as well from the page I just got...
- Michael Jensen says:
However, I would be much more interested in a different subsystem
- Tom Nordheim says:
adcs was it?
- Michael Jensen says:
power does not interest me much
- Lavina Parwani says:
What would you be interested in Mike?
- Michael Jensen says:
I took it to take something to look into for a few hours, contribute
- Michael Jensen says:
Attitude control.
- Tom Nordheim says:
who is doing adcs now?
- Michael Jensen says:
is anybody working on it?
- Michael Jensen says:
is it a subsystem?
- Michael Jensen says:
adcs?
- Lavina Parwani says:
I think it's part of the mechanical
- Lavina Parwani says:
And that's Pradeep's subsystem
- Tom Nordheim says:
it should be a seperate subsys if you ask me
- Michael Jensen says:
a lot of the mission objectives I have come up with require precise attituce control...
- Amrut Yalagi says:
i haven't seen pradeep frm the begning
- Lavina Parwani says:
He's been busy with exams
- Michael Jensen says:
at the very begining i let somebody have attitude control...
- Lavina Parwani says:
Maybe if you send a suggestion to the email list about making the attitude control a separate subsystem?
- Michael Jensen says:
can't remember who it was...
- Michael Jensen says:
it wasen't pradeep.
- Lavina Parwani says:
hmm
- Michael Jensen says:
it wen't to somebody who didn't have a system yet....
- Michael Jensen says:
I'm sure pradeep had something...
- Lavina Parwani says:
pradeep always took mechanical, methinks
- Amrut Yalagi says:
yes
- Michael Jensen says:
but was attitude control included in mechanical?
- Michael Jensen says:
at the time?
- Michael Jensen says:
somebody had structures...
- Lavina Parwani says:
Was attitude control ever a separate subssytem?
- Tom Nordheim says:
I makes a lot of sense for it to be separate but I can't really remember...
- Michael Jensen says:
Geoff Hilton: command and data handling
- Tom Nordheim: payload
- Anbarasan V: attitude control
- Lavina Parwani: ground and communications
- Michael Jensen: power
- Pradeep Mohandas: structures
- Michael Jensen says:
anbarasan?
- Tom Nordheim says:
ah ok
- Tom Nordheim says:
I haven't really seen him around...
- Lavina Parwani says:
he was there the first day I think
- Michael Jensen says:
and since?...
- Amrut Yalagi says:
yes, he is bit busy with his personal things.. as he need to look over his dad work's
- Lavina Parwani says:
once since
- Amrut Yalagi says:
don't worry i will get him
- Michael Jensen says:
I have another question...
- Tom Nordheim says:
ok, ask him if he could be there at the next meeting
- Tom Nordheim says:
that would be great
- Amrut Yalagi says:
ok, I will
- Michael Jensen says:
communications... is that different from ground?
- Michael Jensen says:
we may have been over this before...
- Lavina Parwani says:
yes
- Michael Jensen says:
ok. how?
- Lavina Parwani says:
communications = communication systems onboard the satellite
- Lavina Parwani says:
antenna + transceiver + anything else
- Michael Jensen says:
ok. I am lost again. just like I was for ground.
- Michael Jensen says:
what does this involve?
- Tom Nordheim says:
making the RF system, the antenna etc
- Michael Jensen says:
what info needs to be propogated, and how?
- Lavina Parwani says:
info?
- Michael Jensen says:
rf?
- Michael Jensen says:
RF?
- Tom Nordheim says:
the radio system in other words
- Michael Jensen says:
so these need to communicate with each other?
- Michael Jensen says:
or we just need to make them?
- Lavina Parwani says:
the satellite needs to communicate with the ground via radio
- Michael Jensen says:
ground = equipment on the ground to comunicate with...
- Lavina Parwani says:
it does this with two main components: antenna and a transceiver
- Michael Jensen says:
communications =equipment on the sattelite to communicate with ground
- Lavina Parwani says:
it receives information from the ground and sends information to the ground
- Lavina Parwani says:
yes
- Michael Jensen says:
data handling is the info that is propogated
- Michael Jensen says:
so data handling is purely software
- Tom Nordheim says:
well it is some hardware too
- Michael Jensen says:
and ground and communications is purely hardware...
- Amrut Yalagi says:
we need any software for it?
- Tom Nordheim says:
like the main MCU for example
- Michael Jensen says:
MCU?
- Amrut Yalagi says:
??
- Tom Nordheim says:
sorry with the abbrievations
- Tom Nordheim says:
microcontroller
- Michael Jensen says:
so much for acronims...
- Michael Jensen says:
...
- Lavina Parwani says:
MCU is for the data handling right?
- Michael Jensen says:
ground and com. is microcontroller?
- Michael Jensen says:
sory. com is mocro?
- Tom Nordheim says:
?
- Michael Jensen says:
micro
- Tom Nordheim says:
I lost you there
- Tom Nordheim says:
usually there are microcontrollers involved in most things
- Michael Jensen says:
the micro controler is the communication or for the communications system
- Tom Nordheim says:
hmm wait a minute, I'm looking for a good example
- Michael Jensen says:
is the mcu an integrated circuit for controling the satellite?
- Michael Jensen says:
or at least it's communications?
- Tom Nordheim says:
ok
- Tom Nordheim says:
again the example of ncube
- Tom Nordheim says:
they had one controller for telecommand(comm)
- Tom Nordheim says:
one for the payload, one for power management and one for adcs
- Michael Jensen says:
this is the brains of the satellite...
- Tom Nordheim says:
all more or less connected via the i2c bus
- Tom Nordheim says:
well yes in a way
- Michael Jensen says:
i2c ??
- Tom Nordheim says:
it's a serial communications bus
- Michael Jensen says:
baptism by fire my dad calls it...
- Michael Jensen says:
... english?
- Lavina Parwani says:
haha
- Tom Nordheim says:
http://en.wikipedia.org/wiki/I2c
- Michael Jensen says:
communications I got...
- Michael Jensen says:
websites are great
- Tom Nordheim says:
sorry guys, I'm an electronics person, I tend to get carried away with such things easily
- Michael Jensen says:
no prob.
- Michael Jensen says:
we'll just go to the site and get caught up
- Tom Nordheim says:
this might be useful as well
- Tom Nordheim says:
http://en.wikipedia.org/wiki/Microcontroller
- Michael Jensen says:
Anyway, I would be very interested in tacking on attitude control, ...or communications...
- Amrut Yalagi says:
tom always has solution with websites
- Michael Jensen says:
good old tom
- Lavina Parwani says:
I wouldn't say no to help with the communications subsystem
- Michael Jensen says:
sensing reputation comming on...
- Lavina Parwani says:
I was going to get some from my professor, but if you want to contribute, you're welcome to
- Tom Nordheim says:
but we still have systems without leads though...
- Michael Jensen says:
name tham.
- Michael Jensen says:
them
- Tom Nordheim says:
well don't we?)(look)
- Lavina Parwani says:
I thought that every subsystem had a lead?
- Tom Nordheim says:
well yes my bad
- Lavina Parwani says:
hehe
- Tom Nordheim says:
well then, no problem it seems
- Lavina Parwani says:
next item on the agenda?
- Tom Nordheim says:
yes, how are we going to decide on a payload?
- Michael Jensen says:
hold on..
- Michael Jensen says:
am I woeking on attitude control now, or waiting to hear from anbarasan...
- Tom Nordheim says:
I'm sure it doesn't hurt if you work on attitude control anywa?
- Tom Nordheim says:
- anyway
- Tom Nordheim says:
it's a complex topic, and I'm sure that anbarasan would appreciate the help anyway...
- Michael Jensen says:
I can split my time a bit between that and communications, that way
- Michael Jensen says:
if I do all work that anb. has already done, my time won't be totally wasted
- Michael Jensen says:
although, time spent learning is rarely wasted, right?
- Tom Nordheim says:
exactly
- Lavina Parwani says:
you can send an email to the list letting anbarasan know, and Amrut can pass the message too, yeah?
- Amrut Yalagi says:
yes, I can
- Michael Jensen says:
lav, you can send me your (unposted) material on communications?
- Amrut Yalagi says:
today he might be busy with his girl ..
- Michael Jensen says:
right...
- Tom Nordheim says:
ok payload:
- Michael Jensen says:
payload
- Lavina Parwani says:
Mike, everything I have is posted
- Michael Jensen says:
good
- Michael Jensen says:
i'll try to post as i find new stuf, or at least let you know
- Lavina Parwani says:
me too
- Lavina Parwani says:
thanks, Mike
- Michael Jensen says:
no prob
- Lavina Parwani says:
alright. Payload decision now?
- Michael Jensen says:
payload?
- Tom Nordheim says:
not now
- Amrut Yalagi says:
i will put abt ground station
- Tom Nordheim says:
but how do we decide on it eventually
- Amrut Yalagi says:
after having tommm meeting
- Michael Jensen says:
how many have looked at the stuf I put up in the mfs for that?
- Tom Nordheim says:
for power?
- Tom Nordheim says:
oh payload sorry
- Tom Nordheim says:
yeah I looked at it
- Michael Jensen says:
how we decide on it eventually?
- Michael Jensen says:
sure...
- Lavina Parwani says:
me too
- Tom Nordheim says:
any suggestions?
- Lavina Parwani says:
I think I like Kirk's idea
- Lavina Parwani says:
Which he gave in the email list
- Lavina Parwani says:
we have a sort of payload "conference" and have a panel decide which is best
- Michael Jensen says:
if we are going to use kiks idea,
- Michael Jensen says:
we need to put a lot of work into publicising
- Michael Jensen says:
to get a lot of entries into the contest.
- Lavina Parwani says:
yep
- Lavina Parwani says:
open source satellite, go!
- Michael Jensen says:
that should be the next goal after the 13th
- Lavina Parwani says:
hang on
- Michael Jensen says:
basically, going public...
- Amrut Yalagi says:
yes, that would be next topic
- Lavina Parwani says:
Tom, do we need to have a decision for the payload by the 13th?
- Tom Nordheim says:
no
- Lavina Parwani says:
ok, good
- Michael Jensen says:
hello no!
- Lavina Parwani says:
then yes, it'd be good to make that our next goal
- Michael Jensen says:
kirk mentioned on the wiki
- Amrut Yalagi says:
sounds good
- Michael Jensen says:
that getting funding for indivicual subsystems would also be
- Michael Jensen says:
a responsibility of subsystem leeds...
- Lavina Parwani says:
yeah
- Michael Jensen says:
should we get around to doing that in paralell with publicising?
- Lavina Parwani says:
funding?
- Amrut Yalagi says:
like one by one?
- Michael Jensen says:
or wait until after?
- Michael Jensen says:
people might want to know how we will pay for this thing,
- Lavina Parwani says:
I think that the funding to be gotten is the job of the subsystem leads that actually build the subsystems
- Michael Jensen says:
want to see our sponsors...
- Tom Nordheim says:
what we really need as far as I see it is money for travel and the launch itself
- Tom Nordheim says:
those are the main obstacles...
- Lavina Parwani says:
We need money for the launch?
- Michael Jensen says:
groan...
- Michael Jensen says:
ya
- Lavina Parwani says:
huh
- Lavina Parwani says:
I need to reread things then
- Michael Jensen says:
I'm treating that as 'somebody elses problem'
- Tom Nordheim says:
Kirk is working on those two things at the moment I think...
- Michael Jensen says:
so we have team a,b,and c...
- Michael Jensen says:
a is us.
- Michael Jensen says:
b is the design
- Michael Jensen says:
and c is the build
- Amrut Yalagi says:
ok, guys i need to leave now for party
- Lavina Parwani says:
I was under the impression that the reason the CubeSat project existed was because it's something that NASA offers to do for students...educationally
- Michael Jensen says:
and c finds the funding for the systems?
- Tom Nordheim says:
ok bye amrut
- Lavina Parwani says:
yep
- Amrut Yalagi says:
thx
- Michael Jensen says:
bye
- Amrut Yalagi says:
and have a nice day
- Michael Jensen says:
we will
- Tom Nordheim says:
no I don't believe so, but I don't have all the info here...ask kirk
- Lavina Parwani says:
bye amrut
- Michael Jensen says:
sun is bright here
- Lavina Parwani says:
happy new year
- Tom Nordheim says:
happy new year amrut
- Amrut Yalagi says:
same to u tom and all
- Michael Jensen says:
so we don't have to wory about funding just yet?
- Lavina Parwani says:
I doubt it
- Michael Jensen says:
kirk is the one to ask.
- Lavina Parwani says:
but I could be wrong
- Lavina Parwani says:
yeah
- Michael Jensen says:
so what have we done so far, what remains to do?
- Tom Nordheim says:
today or in phase a?
- Michael Jensen says:
we have discussed subsystems, meeting times, funding...
- Michael Jensen says:
I am now working on attitude control and communications...
- Michael Jensen says:
kirk did say that if something was not done by this week we should re-asign it...
- Tom Nordheim says:
and there will be a meeting at 0100GMT on wednesday
- Lavina Parwani says:
he said if there are subsystems that have no info on the MFS, we should reassign it
- Tom Nordheim says:
well just look at the mfs
- Michael Jensen says:
thursday, no?
- Tom Nordheim says:
ground has been reassigned
- Tom Nordheim says:
ok yeah thursday
- Lavina Parwani says:
haha, yeah, Mike
- Tom Nordheim says:
I have some things I feel I could add to the OBDH section
- Tom Nordheim says:
sorry, onboard data handling
- Michael Jensen says:
payload in english
- Michael Jensen says:
oh.
- Michael Jensen says:
I am going to assume that anbarasan is out of it and put most of my effort into attitude...
- Michael Jensen says:
?
- Michael Jensen says:
whatever.
- Tom Nordheim says:
we certainly haven't seen much of him, so that might be a fair bet
- Michael Jensen says:
so is that it?
- Michael Jensen says:
it interests me a great deel in any case
- Tom Nordheim says:
I think that the rest should be discussed when we have more people here
- Tom Nordheim says:
I have someone you can talk to about it btw
- Michael Jensen says:
communications may or may not suffer...
- Tom Nordheim says:
a russian guy who is specializing in adcs
- Michael Jensen says:
I must split myself. sigh.
- Michael Jensen says:
could you spell out the acronim plese
- Tom Nordheim says:
adcs?
- Michael Jensen says:
make it easier to remember
- Tom Nordheim says:
attitude determination and control...system
- Michael Jensen says:
attitude control as adcs...
- Michael Jensen says:
attitude determination and control system...
- Michael Jensen says:
right.
- Michael Jensen says:
so is the 13th next sunday?
- Tom Nordheim says:
no
- Michael Jensen says:
or the sunday after that...
- Tom Nordheim says:
two weeks
- Lavina Parwani says:
yay
- Lavina Parwani says:
thank goodness
- Michael Jensen says:
we should aim to have the mfs done within the week, so
- Michael Jensen says:
kirk can give us feedback on it.
- Lavina Parwani says:
yep
- Michael Jensen says:
have people looked as the mission sugestions I put on the wiki?
- Michael Jensen says:
one of them may be fesable
- Michael Jensen says:
can you tell which?
- Tom Nordheim says:
and the rest on my agenda should wait 'till we are more people
- Michael Jensen says:
right...
- Tom Nordheim says:
interferrometry perhaps?
- Tom Nordheim says:
.r
- Michael Jensen says:
you got it... thoughts?
- Tom Nordheim says:
hmm what would we be observing?
- Tom Nordheim says:
what would the effective resolution be etc?
- Michael Jensen says:
whatever we decide...
- Michael Jensen says:
visible is no problem
- Michael Jensen says:
the other wavelengths may or may not be...
- Michael Jensen says:
time for more research ein?
- Michael Jensen says:
lav?
- Tom Nordheim says:
it's kind of a specific solution to optical observation using a camera chip
- Lavina Parwani says:
hang a sec
- Michael Jensen says:
how many are we just now anyway?
- Tom Nordheim says:
three really
- Michael Jensen says:
damn...
- Tom Nordheim says:
http://www.sparkfun.com/commerce/product_info.php?products_id=7906 you were talking about small cameras
- Tom Nordheim says:
this is quite small, has onboard compression and a microcontroller...
- Michael Jensen says:
what wavelengths would be useful for observing algae?
- Michael Jensen says:
if that is what we will be looking for...
- Tom Nordheim says:
you could probably get interesting results in many different bands
- Tom Nordheim says:
but it should be possible using the visible band
- Michael Jensen says:
we need to observe a band that is believed to contain useful information, and that can be observed with an instrument small enough.
- Tom Nordheim says:
I'm going to ask somone who works with ...algae if he can suggest any special areas where we could concentrate our efforts
- Tom Nordheim says:
exactly...
- Tom Nordheim says:
I'll have to look into that some more...
- Michael Jensen says:
I think anything we can do to measure the level of health of the ocean eco-system,
- Michael Jensen says:
it's level of polution, etc. would be good, espetially
- Michael Jensen says:
from a pr perspective...
- Tom Nordheim says:
I'm guessing rising global temperatures would increase the number of algae and thereby changing the colour of the worlds oceans
- Lavina Parwani says:
sorry, I had a phone call. I really liked the interferometry idea
- Lavina Parwani says:
it does maximise the observation power of the satellite
- Michael Jensen says:
holly cow...
- Michael Jensen says:
change the colour of the worlds oceans?
- Michael Jensen says:
yoour kidding!
- Tom Nordheim says:
that is how they observe algae, no?
- Michael Jensen says:
you're right of course...
- Tom Nordheim says:
like when the water is green, you've probably seen that
- Michael Jensen says:
but you are refering to localised changes
- Tom Nordheim says:
that's algae
- Michael Jensen says:
as the way that algai is detected.
- Lavina Parwani says:
yep
- Tom Nordheim says:
the reason why I suggested it is that you could probably see the change in a big area
- Tom Nordheim says:
and therefore you wouldn't need such an extreme zoom
- Michael Jensen says:
but could we try to observe a global change in the colour of the oceans and try to compare that to their colour 20 years ago?
- Tom Nordheim says:
which is vey unlikely that we would be able to achieve using a cubesat anyway
- Lavina Parwani says:
the resolution we can get with the interferometry... what can we usefully observe?
- Tom Nordheim says:
that is what we need to look into
- Michael Jensen says:
it depends on the size of the interferometer...
- Michael Jensen says:
mostly these are used in astronomy
- Michael Jensen says:
where you are looking through the interstellar medium
- Michael Jensen says:
we would be focussing on the surface where
- Michael Jensen says:
air currents will generate a great deel of interferance
- Michael Jensen says:
the interferometer might actually not help at all...
- Michael Jensen says:
I don't know...
- Tom Nordheim says:
hmm
- Michael Jensen says:
if the air was completelly still, we could in principle resolve a much as we wanted...
- Michael Jensen says:
observe shrimp...
- Tom Nordheim says:
we couldn't do interferrometry with regular camera chips could we?
- Michael Jensen says:
sure we can...
- Tom Nordheim says:
or well
- Tom Nordheim says:
with one camera and mirrors perhaps?
- Michael Jensen says:
we would just need a device (the interferomenter itself) to combine
- Michael Jensen says:
the camera feeds and do the analysis.
- Michael Jensen says:
I need to look into this some more, but I believe
- Tom Nordheim says:
this needs to be researched further
- Tom Nordheim says:
yeah my thought exactly
- Michael Jensen says:
that a signal needs to be generated
- Michael Jensen says:
(by a ddc) and the signal is processed..
- Michael Jensen says:
processing the optical observation directly...
- Tom Nordheim says:
I can see how it is very useful for astronomy at least
- Tom Nordheim says:
and looking at very faint sources
- Tom Nordheim says:
hmm ok, we'll discuss this further at a later date, when we have done some more research on it
- Tom Nordheim says:
I will try to look into this, obdh and more on the camera payload
- Tom Nordheim says:
I have to go eat dinner now
- Tom Nordheim says:
could you post the transcript michael?
- Lavina Parwani says:
I will
- Lavina Parwani says:
I'm here
- Tom Nordheim says:
yay
- Tom Nordheim says:
ok
- Lavina Parwani says:
Happy New Year, people
- Lavina Parwani says:
It's 15 minutes to, here
- Tom Nordheim says:
I think we need to discuss some things when we are more people in the chat, hopefully on thursday then
- Lavina Parwani says:
yeppers
- Tom Nordheim says:
ok happy (almost) new years to you then
- Lavina Parwani says:
Sorry about being so distracted
- Tom Nordheim says:
np
- Lavina Parwani says:
it's just so loud here, and too many fireworks going off
- Lavina Parwani says:
alrigth
- Lavina Parwani says:
ciao all
