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High altitude balloon payload, from Sable-3 discussion
djellison
post Sep 26 2007, 11:16 PM
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http://www.unmannedspaceflight.com/index.p...20&start=20

We began talkin about a UMSF balloon - and who know what might happen if enough people think about something hard enough, thoroughly enough and long enough.

How's about this as a starting point.
http://vpizza.org/~jmeehan/balloon/ with http://www.chem.hawaii.edu/uham/part101.html as an important regulatory start point (I'm going to look up the UK regs for this as well)

http://www.srcf.ucam.org/~cuspaceflight/nova1launch.html is also very impressive - all done in the UK

This http://www.makezine.com/blog/archive/2007/...video_podc.html is particularly impressive - I like the multiple-cameras slant.

Anyway - thought I'd get a thread going - this is an idea I like too much to let it gather dust in a corner - the one thing that I think would be nice to achieve is self-portraiture of some sort - think Beagle 2's WAM etc....perhaps in a corner of the FOV of one of/the imaging system. What sort of limit's should we set ourselves? 1kg 10x10x20cm? (sort of 2U Cubesat-on-a-diet budget)

Doug
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helvick
post Sep 27 2007, 04:20 PM
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Things to bear in mind.

Not all digital cameras have a time lapse \ "intervalometer" mode. Whatever models are considered have to have that capability either built in or available cheaply (in terms of mass and money) as an add on.

A reasonably wide angle lens would be nice - most Compact Digicams have a wide end that's equivalent to ~ 35mm focal length on a classic 35mmm SLR providing approximately 55x37deg FOV but some have a more useful 28mm wide end giving a ~65x46deg FOV that covers about 50% more solid angle.

Storage capacity depends very much on how new the camera is - storage above 2GB may not be possible on older SD only devices for example. 1000 7Megapixel jpg shots stored in fine mode would be just about 2GB I reckon so that would be OK (just).

I think that a 2 camera approach is a very good idea. I'm torn between having them pointed in such a way that stitched panoramas are possible versus having them pointed so that we optimize the probability of getting a wider range of individual shots.
As far as power is concerned something like the Tekkeon MyPower MP3300 would give us 40whrs for 320grammes which is probably way more than we need for just the cameras but we still have to build in some sort of tracker\GPS unit and a transmitter which will both need juice too. Taht 40whrs is probably optimistic, no doubt there are losses in the voltage conversion circuitry and we'll probably have temperature related power issues so the margin with that might not actually be all that high.

Anybody got any information on a tracker\transmitter so we can find the thing once it comes crashing back to mother earth?
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ElkGroveDan
post Sep 28 2007, 04:46 AM
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QUOTE (helvick @ Sep 27 2007, 08:20 AM) *
Anybody got any information on a tracker\transmitter so we can find the thing once it comes crashing back to mother earth?

I tracked down the Sable-3 equipment. I'd say some of that would be a fine starting point due to it's proven abilities

The tracking device comes in a kit and is inexpensive:
http://www.byonics.com/microtrak/mt300.php

Here are some balloons
http://www.scientificsales.com/SearchResults.asp


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Posts in this topic
- djellison   High altitude balloon payload   Sep 26 2007, 11:16 PM
- - helvick   I'm definitely on board for this but I'm i...   Sep 27 2007, 06:32 AM
|- - dvandorn   QUOTE (helvick @ Sep 27 2007, 01:32 AM) I...   Sep 27 2007, 03:26 PM
- - Paolo Amoroso   QUOTE (djellison @ Sep 27 2007, 01:16 AM)...   Sep 27 2007, 09:39 AM
- - djellison   That's what WAM means - Wide Angle Mirror - yo...   Sep 27 2007, 10:06 AM
|- - Paolo Amoroso   QUOTE (djellison @ Sep 27 2007, 12:06 PM)...   Sep 27 2007, 01:34 PM
- - djellison   A starter for 10: Powershot A570IS (IS would be a...   Sep 27 2007, 02:15 PM
- - helvick   Things to bear in mind. Not all digital cameras...   Sep 27 2007, 04:20 PM
|- - ElkGroveDan   QUOTE (helvick @ Sep 27 2007, 08:20 AM) A...   Sep 28 2007, 04:46 AM
|- - jamescanvin   QUOTE (helvick @ Sep 27 2007, 05:20 PM) I...   Sep 28 2007, 02:04 PM
- - nprev   Well, here's something for that; not cheap, th...   Sep 28 2007, 12:10 AM
|- - helvick   QUOTE (nprev @ Sep 28 2007, 01:10 AM) Wel...   Sep 28 2007, 08:14 AM
- - Juramike   This is an absolutely excellent idea. I'll vo...   Sep 28 2007, 04:33 AM
- - djellison   I saw 'kit' and thought 'great- I...   Sep 28 2007, 07:40 AM
- - djellison   The smartphone is a genius idea - it would make an...   Sep 28 2007, 11:38 AM
- - AndyG   Here's a more-or-less self-explanatory table o...   Sep 28 2007, 12:06 PM
- - jamescanvin   Great info AndyG. Looking at some of the other fo...   Sep 28 2007, 12:41 PM
- - djellison   At that level it's a little bit about luck - b...   Sep 28 2007, 12:57 PM
|- - ustrax   Hey Doug...what do you think of this first approac...   Sep 28 2007, 01:43 PM
- - nprev   Nice logo, ustrax! Just a general engineeri...   Sep 28 2007, 02:05 PM
- - djellison   Payload wouldn't be thermally 'controlled...   Sep 28 2007, 02:23 PM
|- - nprev   QUOTE (djellison @ Sep 28 2007, 07:23 AM)...   Sep 28 2007, 03:57 PM
|- - JRehling   [...]   Sep 28 2007, 05:36 PM
- - jamescanvin   One more stitching test using the SABLE-3 images. ...   Sep 28 2007, 02:38 PM
|- - ustrax   You know how this guys are Doug... Seing those ...   Sep 28 2007, 02:43 PM
- - djellison   Storage, Volume, Mass, Power, Money If you can ...   Sep 28 2007, 03:13 PM
- - scalbers   Hi - this link has a nice high altitude photo from...   Sep 28 2007, 04:51 PM
- - Juramike   One possibility might be to put all the batteries ...   Sep 28 2007, 04:51 PM
- - djellison   Actually - the altitude will be limited by the env...   Sep 28 2007, 05:55 PM
- - nprev   Good point, Doug. However, ascent velocity is stil...   Sep 28 2007, 06:08 PM
|- - Astrophil   Here's an idea for a future mission: re-enact ...   Sep 29 2007, 11:02 AM
- - dvandorn   Have y'all thought about where you'd want ...   Sep 29 2007, 05:22 AM
- - djellison   Actually - the FAA ( and I'm looking up the UK...   Sep 29 2007, 11:10 AM
- - djellison   Just a bit of fun using Google Sketchup. Never use...   Sep 29 2007, 09:52 PM
|- - ElkGroveDan   QUOTE (djellison @ Sep 29 2007, 01:52 PM)...   Sep 29 2007, 10:04 PM
- - djellison   I think it just lets you interface with other form...   Sep 29 2007, 10:10 PM
- - ngunn   I really hope you guys pull this off. Unfortunatel...   Sep 30 2007, 07:54 AM
- - remcook   Cool project! How much would a weather balloon...   Sep 30 2007, 09:30 AM
|- - ugordan   QUOTE (remcook @ Sep 30 2007, 11:30 AM) I...   Sep 30 2007, 09:58 AM
- - remcook   By the way, did this link get mentioned? http://w...   Sep 30 2007, 09:43 AM
- - Juramike   The twin balloon idea is pretty good. Launching t...   Sep 30 2007, 02:50 PM
|- - ugordan   QUOTE (Juramike @ Sep 30 2007, 04:50 PM) ...   Sep 30 2007, 03:11 PM
- - djellison   Plus -two of everything to buy (and in this case, ...   Sep 30 2007, 03:18 PM
|- - nprev   QUOTE (djellison @ Sep 30 2007, 08:18 AM)...   Sep 30 2007, 06:33 PM
|- - dvandorn   QUOTE (djellison @ Sep 30 2007, 10:18 AM)...   Oct 1 2007, 04:39 AM
- - dvandorn   Well... considering the fact that Voyagers 1 and 2...   Oct 1 2007, 04:37 AM
|- - ugordan   QUOTE (dvandorn @ Oct 1 2007, 06:37 AM) W...   Oct 1 2007, 08:27 AM
|- - tedstryk   QUOTE (dvandorn @ Oct 1 2007, 04:37 AM) W...   Oct 4 2007, 09:23 PM
- - AndyG   Is there an issue with expanded polystyrene at ver...   Oct 1 2007, 11:12 AM
|- - djellison   QUOTE (AndyG @ Oct 1 2007, 12:12 PM) Is t...   Oct 1 2007, 12:20 PM
- - djellison   Status update : Proposal : <2kg payload - on t...   Oct 1 2007, 09:43 PM
- - volcanopele   I would seriously look at the design of Huygens as...   Oct 1 2007, 10:01 PM
- - djellison   I was having similar thoughts, how controlled can ...   Oct 1 2007, 10:48 PM
- - nprev   Weight distribution would also be very important f...   Oct 1 2007, 11:59 PM
- - djellison   The problem isn't a million miles from MER ter...   Oct 2 2007, 06:25 AM
- - jamescanvin   I don't think controlling the rotation is goin...   Oct 2 2007, 09:45 AM
- - djellison   Discovered the FM transmitter may be a no-no in th...   Oct 2 2007, 11:11 AM
- - ngunn   Doug - I wanted to reply to your paragraph about o...   Oct 2 2007, 11:15 AM
- - djellison   For stereo to work - you either have to have a ver...   Oct 2 2007, 11:27 AM
|- - JRehling   [...]   Oct 2 2007, 05:40 PM
|- - ngunn   QUOTE (JRehling @ Oct 2 2007, 06:40 PM) W...   Oct 2 2007, 08:04 PM
- - ngunn   OK this is getting off topic and I won't keep ...   Oct 2 2007, 11:56 AM
- - AndyG   Thirty Thousand Metres Via A Plastic Bag The abo...   Oct 2 2007, 12:47 PM
- - djellison   The envelope itself is arguably the easy part. Bu...   Oct 2 2007, 12:55 PM
- - jamescanvin   OK a few simulations of camera coverage. Two came...   Oct 2 2007, 02:19 PM
- - djellison   Now that's cunning - and even though the data ...   Oct 2 2007, 02:44 PM
- - jamescanvin   Your wish is my command... In each of these I...   Oct 2 2007, 05:22 PM
- - jamescanvin   4) Three cameras all in landscape with elevations ...   Oct 2 2007, 05:43 PM
- - djellison   Well - I've just ordered three very VERY cheap...   Oct 2 2007, 08:31 PM
- - helvick   Stunning work with those coverage sims James. Th...   Oct 2 2007, 09:46 PM
- - djellison   Well - I think with these cheap cameras I've g...   Oct 2 2007, 10:22 PM
|- - JRehling   [...]   Oct 3 2007, 06:02 AM
|- - AndyG   QUOTE (djellison @ Oct 2 2007, 11:22 PM) ...   Oct 3 2007, 08:57 AM
- - ElkGroveDan   If Helvick can't come up with another unit, I ...   Oct 2 2007, 11:12 PM
- - djellison   Someone else can drown their cameras intentionally...   Oct 3 2007, 07:00 AM
- - djellison   A 90p thermistor's great...BUT....you need som...   Oct 3 2007, 09:15 AM
|- - JRehling   [...]   Oct 3 2007, 05:59 PM
|- - centsworth_II   QUOTE (JRehling @ Oct 3 2007, 01:59 PM) I...   Oct 4 2007, 10:31 PM
- - AndyG   Monitoring various sensors sounds exactly like a m...   Oct 3 2007, 10:02 AM
- - volcanopele   Someone suggested donating a Treo. There might be...   Oct 4 2007, 10:37 PM
- - helvick   Re Treo's and other potential offerings. They ...   Oct 5 2007, 12:13 AM
|- - ElkGroveDan   QUOTE (helvick @ Oct 4 2007, 04:13 PM) Re...   Oct 5 2007, 04:12 AM
|- - Greg Hullender   QUOTE (helvick @ Oct 4 2007, 05:13 PM) . ...   Oct 5 2007, 11:51 PM
- - volcanopele   It is sad because I refuse to use a Windows Mobile...   Oct 5 2007, 12:30 AM
- - djellison   Will it work in the UK do you think? Quad/Tri band...   Oct 5 2007, 08:27 AM
|- - ElkGroveDan   QUOTE (djellison @ Oct 5 2007, 12:27 AM) ...   Oct 5 2007, 03:03 PM
- - djellison   Got my three very very cheap cameras and the polys...   Oct 5 2007, 04:38 PM
- - djellison   Well - my idea of a front-door peep hole lens to g...   Oct 5 2007, 09:06 PM
- - lyford   I have nothing to offer this project except encour...   Oct 6 2007, 03:24 AM
- - djellison   These crap 3 megapixel cameras will happily record...   Oct 6 2007, 11:00 AM
|- - JRehling   [...]   Oct 6 2007, 07:10 PM
|- - djellison   QUOTE (JRehling @ Oct 6 2007, 08:10 PM) I...   Oct 6 2007, 09:33 PM
- - paxdan   I have been following this thread pretty closely. ...   Oct 6 2007, 11:07 AM
- - djellison   Their wiki doesn't have many details on the ti...   Oct 6 2007, 02:29 PM
- - DEChengst   This sounds pretty exciting In my mind this can ...   Oct 8 2007, 05:19 PM
|- - djellison   QUOTE (DEChengst @ Oct 8 2007, 06:19 PM) ...   Oct 8 2007, 08:22 PM
- - nprev   Really! What kind of sensor is used to detect ...   Oct 9 2007, 03:27 AM
|- - ElkGroveDan   QUOTE (nprev @ Oct 8 2007, 07:27 PM) Real...   Oct 9 2007, 04:29 AM
|- - JRehling   [...]   Oct 9 2007, 05:34 AM
- - djellison   The 144.8 Mhz FM APRS kit arrived. I need to get ...   Oct 12 2007, 12:17 AM
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