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Telecon tomorrow (Thursday) @ 5 pm Eastern time

Hi all!

Telecon tomorrow (Feb. 7 in North America, Feb. 8 in Australia) at the regular time: 5 pm Eastern (2 pm Pacific, noon Hawaii, 23.00 European, 9 am Eastern Australia). Lots more progress on (and photos of) of the 3 new photodiode precision amplifier boards that are currently being tested in the lab; more new updates on AIFCOMSS station-keeping prediction/simulation software; and also we're just starting to get ready for outdoor drop testing this spring (in my new backyard!). More discussion items for tomorrow's telecon include: flight/telescope plans and tests; construction and lab tests of the new gondola/payload; light sources and light source modelling; goniometric and pre- and post-flight calibration; propulsion work; nanosat bus and payload solid models; computing / website / TWiki forums and e-mails; grant applications; and recap of schedules. I'll send an update with photos from the last few days, etc, before the telecon tomorrow.

Here's how to connect:

1) Open Skype on your computer (note that of course, you should first install Skype, http://www.skype.com, on your machine if you haven't already).

2) In the "Contacts" menu, add me ( jalbertuvic ) as a contact, if you haven't already.

3) Just wait for me to Skype-call you at the usual time (5 pm Eastern, 2 pm Pacific, etc).

4) If there is any trouble, or if you don't get a Skype-call for some reason and would like to join, please just send me an e-mail (jalbert@uvicNOSPAMPLEASE.ca).

Here's the tentative agenda:

I) Flight & telescope plans, and upcoming tests

II) Construction, drop tests, and other tests of the new gondola and payload

III) Diffused light source and its modelling, pre- and post-flight calibration, and goniometric calibrations

IV) Solid modelling

V) Computing/website, including recent flight control and simulation progress

VI) Grant applications


Talk to you all tomorrow, thanks!!! justin

-- jalbert - 2019-02-06

Hi all!

My apologies for the delay! -- here's a reminder of our telecon in 25 minutes from now, plus a quick progress report on ALTAIR balloon work over the past 2 weeks + meeting minutes of our telecon 2 weeks ago (attendees Arnold Gaerner [NRC] & me):

Andrew Macdonald in the UVic phys & astro electronics shop has continued making good progress with testing and fully populating the three new precision photodiode amplifier boards. Here are the 3 boards as of yesterday:

in his testing area in the shop:

He's aiming to have them ready to hand over to me for my own testing and installation in ALTAIR by late next week. Here's ALTAIR at present, together with the Capella ground station in the foreground, in my own (crowded & messy) testing area in my office:

My ongoing task there is to integrate our resurrected SHX144 telemetry with the rest of the telemetry system, so that one can seamlessly switch between using it and the DNT900 (default) and the RFM23BP telemetry, if one or the other happens to give some problem during flight. (The DNT900 and RFM23BP are already integrated and one can seamlessly switch between them, via AIFCOMSS, but the SHX144 needs to be added to that seamless software telemetry integration system.)

Another ongoing task of mine is to prepare the backyard of the new house to which I just moved for outdoor drop testing this spring. Here is a diagram (overlayed on a photo) of how drop testing will be set up there (the clothes-drying line, crossed out in red, will be removed):

and the opposite view (the small chain-link fence, crossed out in red, will also be removed):

and an indoor view -- the base of the drop-testing pole will be fixed on the floor (inside the window) by a pole-base-holder which I will make from some lumber:

and this outdoor drop testing setup will, of course, use the 10-meter stabilized pole that Mark Lenckowski made a while ago:

As you can see (faintly), he affixed side-struts and guy wire to the PVC pole, to prevent it from bending in either of the two transverse directions, so it can be raised to vertical, from horizontal, without bending or breaking.

The survey-tripod-mounted device to cross-check yaw-pitch-roll information from the gondola (e.g., on days before/after flights) is also constructed now, thanks to Mark Lenckowski -- photo at:

and all that remains to be done is to finish the small fitting between the device and the bottom of the payload. The purchased hardware in it includes both the survey tripod (http://www.cpotools.com/cst-berger-60-alwi20-o-aluminum-tripod-with-quick-release--orange-/cstn60-alwi20-o,default,pd.html), two adjustable angle mounts (http://www.thorlabs.com/thorproduct.cfm?partnumber=AP180), and a rotation mount (https://www.thorlabs.com/thorproduct.cfm?partnumber=RP01). That last fitting to attach (temporarily, pre- or post-flight) the upper adjustable angle mount to the payload landing gear has been started and will be completed here in the next couple weeks.

We're currently revising the draft initial contractual agreement from our colleagues at Globalstar Canada regarding 2 initial SPOT Trace devices (and their service plans) for the educational side-project for the upcoming NATO SPS application, in which classrooms in elementary and high schools could launch company-donated SPOT Traces using party balloons (or a more environmentally-friendly version thereof), and track them to learn more about winds at different levels in Earth's atmosphere.

Houman will send Cordell and/or us updated sections of his master's thesis soon -- that information will be extremely useful to us going forward. Also, Susana and Nathan, it would be very helpful for us all to get the JHU students' final writeup when you have a chance.

Our next grant applications will be a NATO "Science for Peace and Security" application, together with Australian colleague partners.

Our next telecon is in 25 minutes from now (see below for Skype instructions).

Cheers, and talk to you in 25 minutes! -- thanks all!!!!!


-- jalbert - 2019-02-07

Title Telecon tomorrow (Thursday) @ 5 pm Eastern time
Forum ForumGeneral
Topic attachments
I Attachment History Action Size Date Who Comment
JPEGjpg ALTAIRPrecisionPDAmpBoardTestSetupPhoto6Feb2019.JPG r1 manage 2234.7 K 2019-02-07 - 00:19 JustinAlbert UVic Phys&Astro electronics shop test setup for new precision photodiode amplifier boards
JPEGjpg ALTAIRPrecisionPDAmpBoardsPhoto6Feb2019.JPG r1 manage 2502.6 K 2019-02-07 - 00:18 JustinAlbert New precision photodiode amplifier boards, in UVic Phys&Astro electronics shop test setup
JPEGjpg ALTAIRandCapellaOfficeTestingSetupPhoto6Feb2019.JPG r1 manage 2142.6 K 2019-02-07 - 00:20 JustinAlbert Office test setup for ALTAIR, with Capella ground station
JPEGjpg IMG_3723Backyard1574PearStDiag1.jpg r1 manage 4558.3 K 2019-02-07 - 00:21 JustinAlbert 1574 Pear St backyard drop testing setup diagram 1
JPEGjpg IMG_3744Backyard1574PearStDiag2.jpg r1 manage 5786.7 K 2019-02-07 - 00:21 JustinAlbert 1574 Pear St backyard drop testing setup diagram 2
JPEGjpg IMG_3856DropTestingPoleBase1574PearStDiag.jpg r1 manage 4624.4 K 2019-02-07 - 00:22 JustinAlbert 1574 Pear St sunroom pole base diagram for drop testing setup
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Topic revision: r3 - 2019-02-07 - JustinAlbert
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