[AR] Re: Spin stabilized rocket
- From: Henry Spencer <hspencer@xxxxxxxxxxxxx>
- To: Arocket List <arocket@xxxxxxxxxxxxx>
- Date: Tue, 25 Dec 2018 17:28:57 -0500 (EST)
On Tue, 25 Dec 2018, Monroe L. King Jr. wrote:
This "Open Tracker" looks pretty good! I wonder why I have not seen it
before?
Beware of thinking that the software is the big problem and adequate
camera hardware is a contemptible minor detail, easily solved by just
buying something cheap off the shelf. Not necessarily so.
(Despite my past references to them, and having done work with them, I
have no serious inside knowledge of the Sinclair star trackers. I do know
that our lab considered doing its own star tracker -- we do build our own
sun sensors, our own optical instruments, our own on-board computers, and
our own attitude-control software -- and decided to buy the Sinclair ones
instead. And I and others lately have been wrestling with a
vaguely-related optical problem, and no, the hardware is not at all a
contemptible minor detail; just setting the hardware specs requires
non-trivial design effort, and meeting them may be a challenge.)
Henry
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