wxAstroCapture: command not found

Have You tried accessing the binary with the full path?

Maybe Your $PATH variable doesn't contain the default paths? echo $PATH should give something like:

[root@server ~]# echo $PATH
/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin

If it's empty, You may set the PATH variable with this command

export PATH="/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin"

On Debian possible default full paths are:

/usr/bin/wxAstroCapture - from package: wxastrocapture

You may install the required package with command apt-get install {package}
Error in other languages:
wxAstroCapture: bevel nie gevind nie
wxAstroCapture: comandă negăsită
wxAstroCapture: comando não encontrado
wxAstroCapture: commande introuvable
wxAstroCapture: command not found
wxAstroCapture: käsku ei ole
wxAstroCapture: không tìm thấy lệnh
wxAstroCapture: komanda nerasta
wxAstroCapture: Kommando nicht gefunden.
wxAstroCapture: kommandot finns inte
wxAstroCapture: komut yok
wxAstroCapture: nie znaleziono polecenia
wxAstroCapture: níor aimsíodh an t-ordú
wxAstroCapture: no se encontró la orden
wxAstroCapture: no s'ha trobat l'ordre
wxAstroCapture: opdracht niet gevonden
wxAstroCapture: parancs nem található
wxAstroCapture: perintah tidak ditemukan
wxAstroCapture: príkaz nenájdený
wxAstroCapture: příkaz nenalezen
wxAstroCapture: команда не найдена
wxAstroCapture: командата не е открита
wxAstroCapture: 命令找不到
wxAstroCapture: コマンドが見つかりません