Houman and Cordell -- extremely good points from Arnold below.

BTW, Arnold, you did the exactly right thing in cc'ing 
nanosat-hn-pa@projectaltair.org , so it should have ended up posted there, 
but it didn't!  Did you get a bounce-back message by any chance, or did 
that cc just disappear?

On Fri, 8 May 2015, Gaertner, Arnold wrote:
> Hi Justin and Houman,
> Thanks for forwarding the links.
> The design looks interesting.
> I have one comment:
> The integrating sphere will emit light in all directions, not only in the cone direction for which we provide unobstructed view of the sphere port.
> Be careful that none, or as little as possible (within the uncertainty we require), of the light that is emitted outside this angle and hits the PCB, or even the cone walls, does not get scattered back into the direction of our view.
> The cone black is never really black, and if it gets dust on it will become a 'diffuse' scatterer.
> The edges of the PCB will scatter.
> Best regards,
> Arnold
>
> -----Original Message-----
> From: Justin Albert [mailto:jalbert@uvic.ca]
> Sent: Thursday, May 07, 2015 23:24
> To: nanosat-hn-pa@projectaltair.org
> Subject: [ALTAIR] - some images (fwd)
>
>
> *** Discussion title: ALTAIR Nanosat (STARCaL)
>
> At the bottom of this message are links to the drawings from Houman (solid model renderings of the optical payload) which we discussed during today's telecon.
>
> ---------- Forwarded message ----------
> Date: Thu, 07 May 2015 13:03:33 -0400
> From: Houman Hakima <hhakima@utias-sfl.net>
> To: jalbert@uvic.ca, Cordell Grant <cgrant@utias-sfl.net>
> Subject: [ALTAIR] - some images
>
> Hi Justin,
>
> Here are some images reflecting the changes that I have made since last telecon. The most significant one would be the PCB that is mounted around the output port and has 6 LEDs on it. I made sure that the connectors, PCB and all the other components stay away from the sphere's 60-deg cone.
>
> -- figures captions
> fig 1: Overall view of the current payload design fig 2: wires can be bundled. On the payload PCB same connector that is used for the multi-colour laser can be used for the 6 LEDS.
> fig 3: how LED board sits around the output port fig 4: the LEDs and their PCB fit inside the integration sphere's baffle.
> fig 5: Turret connectors do not intersect with the cone.
>
> Thanks,
> Houman
>
>   Attachment:
>      http://projectaltair.org/HyperNews/get/AUX/2015/05/07/20.19-59426-1.jpg
>      http://projectaltair.org/HyperNews/get/AUX/2015/05/07/20.19-41191-2.jpg
>      http://projectaltair.org/HyperNews/get/AUX/2015/05/07/20.19-94534-3.jpg
>      http://projectaltair.org/HyperNews/get/AUX/2015/05/07/20.19-95051-4.jpg
>      http://projectaltair.org/HyperNews/get/AUX/2015/05/07/20.19-86046-5.jpg
>
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