[AR] Re: Star trackers at high altitude
- From: Henry Spencer <hspencer@xxxxxxxxxxxxx>
- To: Arocket List <arocket@xxxxxxxxxxxxx>
- Date: Sat, 1 Apr 2023 23:41:11 -0400 (EDT)
On Sun, 2 Apr 2023, Troy Prideaux wrote:
Or you could maybe cheat by using a hi-res video cam with the IR+UV
filter replaced with a 1um bandpass or longpass. That should make the
sky black provided it's clear.
Note, though, that you might need a somewhat-different star catalog --
relative star brightnesses in the near IR are not necessarily the same as
in visible! Depends on the star's spectral class.
Henry
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