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Re: [APML] Mount for C-14 at a University

To: astro-photo@seds.org
Subject: Re: [APML] Mount for C-14 at a University
From: Jerry Lodriguss <jml@astropix.com>
Date: Thu, 25 Jul 2002 19:46:02 -0400
In-Reply-To: <3D406C3E.8B4A584A@texas.net>
References: <3D4014E6.EDDB8E1@silverlink.net><20020725113209.26021.qmail@web11507.mail.yahoo.com><3D400768.89C9380B@silverlink.net><20020725163953.A154424@ibm-2.MPA-Garching.MPG.DE><3D4014E6.EDDB8E1@silverlink.net><4.2.0.58.20020725165048.00ab1ac0@mail.astropix.com>
Reply-To: astro-photo@seds.org
Sender: owner-astro-photo@seds.org


>
>Well, you're kind of right for the wrong reasons <g>.  Steppers have a
>lower RPM limit, and so to maintain high slew speeds they generally
>have a lower reduction gearing, which means each step is "coarse",
>which in poorly designed mounts can lead to vibration.


Hi Gene,  thanks for the explanation. I knew there was some reason people 
had switched to servo motors for the goto mounts.

Jerry

Astronomical photography: http://www.astropix.com




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References:
- Re: [APML] Mount for C-14 at a University
  - From: Greg Mueller <mueller@silverlink.net>
- [APML] Mount for C-14 at a University
  - From: Gil Shillcutt <astrocycle@yahoo.com>
- Re: [APML] Mount for C-14 at a University
  - From: Greg Mueller <mueller@silverlink.net>
- Re: [APML] Mount for C-14 at a University
  - From: Mischa Schirmer <mischa@MPA-Garching.MPG.DE>
- Re: [APML] Mount for C-14 at a University
  - From: Jerry Lodriguss <jml@astropix.com>
- Re: [APML] Mount for C-14 at a University
  - From: Gene Horr <genehorr@texas.net>

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