[Author Prev][Author Next][Thread Prev][Thread Next][Author Index][Thread Index]

Re: R: [APML] Beep on ST4

To: astro-photo@seds.org
Subject: Re: R: [APML] Beep on ST4
From: Matt BenDaniel <matt@starmatt.com>
Date: Thu, 20 Jun 2002 15:54:21 -0400
In-Reply-To: <001601c21890$8f728700$35140b3e@it>
References: <000a01c21872$d78744e0$1d190b3e@it><5.1.0.14.0.20020620130721.02f20488@pop.theworld.com><006f01c21887$f6659820$f34ee195@unknown>
Reply-To: astro-photo@seds.org
Sender: owner-astro-photo@seds.org

At 03:27 PM 6/20/2002, Massimo Costa wrote:
>Thanks to all for answers, but I have a further question.
>Does a single beep indicate the loss of guide star or the danger of this
>loss?

It means that the star has dimmed and the ST-4 did not issue a correction that cycle. If the ST-4 beeps every cycle, it means it is not correcting.

>I say this because I often obtain with ST4 oval or shortly trailed stars and
>I have not still understood if it is due to an  autoguiding problem (bad

Could be. 

>settings or so) or to a mechanical AR gear jump. Not always indeed alarm
>sounds and redout values are under 4.

Many reasons for poor guiding.
Try manual guiding for diagnosis.

--
Matt BenDaniel
matt@starmatt.com
http://starmatt.com


--  APML Archives at <http://astro.umsystem.edu/apml/>  ---
             Unsubscribe at <majordomo@seds.org>

References:
- [APML] Beep on ST4
  - From: "Massimo Costa" <mascosta@tiscalinet.it>
- Re: [APML] Beep on ST4
  - From: Matt BenDaniel <matt@starmatt.com>
- Re: [APML] Beep on ST4
  - From: box2@mfelsch.de
- R: [APML] Beep on ST4
  - From: "Massimo Costa" <mascosta@tiscalinet.it>

Prev by Author: Re: [APML] Beep on ST4
Next by Author: [APML] adjusting color balance [was:To Robert Reeves...and all]
Prev by thread: R: [APML] Beep on ST4
Next by thread: Re: R: [APML] Beep on ST4
Index(es):
- Author
- Thread