| |
[index]
[month]
[prev]
[next]
Subject: Re: [M]: Dec Knob question.
From: Kal Krishnan
Reply To: mapug@shore.net
Date: Tue May 04 09:19:01 2004
|
While you're here, how about checking out the
Astronomy Book
List ? |
Yes, the Dec knob is of marginal use, unless you use the scope in LAND mode (unpowered) regularly.
The only time that I ever use it is when I do an initial "rough align" with Polaris to make sure my tripod is reasonably close to alignment. At that time, it is useful to have the knob to get to Dec 90. Of course, this is just a convenience, most people don't do this.
Leaving it off is certainly a good idea, especially at star parties where people mistakenly think it is a focus knob, since the Meade focus knob and the dec knob look pretty similar.
-Kal.
> ------------Original Message------------
> Date: Tue, May-4-2004 7:08 AM
> Subject: [M]: Dec Knob question.
>
> Anyone is using this knob manually?
> After reading a little the manual and saw the way the gearbox works I take
> out that
> dam knob. Anyone not knowing the scope always try to move in dec with it and
> could ruin the dec gears.
>
> I´m wrong?
>
> The RA Knob is diferent because it´s not engaged to the gearbox directly.
>
> Juan Jose.
>
>
> ----- Original Message -----
> Sent: Tuesday, May 04, 2004 3:44 AM
> Subject: Re: [M]: Dec problems -- not clutch
>
>
> Walt,
>
> I had a problem with my Dec knob being tough to turn and noticed that at
> some point the shaft on the knob got bent and the knob was rubbing
> against
> the fork arm. I loosened the knob and slid it up a few millimeters. My
> Dec
> knob wobbles a bit, but it seems to operate reasonably well. You might
> want
> to make sure that the Dec knob isn't rubbing against fork arm. This is
> the
> easiest thing to fix, if that is the problem.
>
> Taras
>
> On May 3, 2004, at 10:00 PM, mapug-digest wrote:
>
> > Date: Mon, 3 May 2004 21:54:26 -0500
> > Subject: [M]: Dec problems -- not clutch
> >
> > This is a multi-part message in MIME format.
> >
> > - ------=_NextPart_000_0003_01C43159.34456530
> > Content-Type: text/plain;
> > charset="iso-8859-1"
> > Content-Transfer-Encoding: 7bit
> >
> > Hi folks,
> >
> > I have been having dec problems on my 12" LX-200 classic. It's not the
> > clutch like I thought. I pulled the cover off tonight and marked the
> > clutch
> > and worm wheel. When I goto'ed back and forth between two stars with
> > a good
> > separation in dec, my pointing got way off (worse than 10 degrees) but
> > the
> > clutch plate and worm wheel stayed lined up perfectly. There was no RA
> > shift -- only Dec.
> >
> > From my little understanding of the system, I am guessing either the
> > gear
> > reduction box has a problem or the worm and worm wheel are partially
> > binding. The dec adjustment knob is fairly tough to turn. The dec
> > drive
> > makes a much louder egg beater noise than the RA system does.
> >
> > Any thoughts, pointers would be very much appreciated.
> >
> > Clearest skies,
> > Walt Cooney
> > Blackberry Observatory
> > http://members.cox.net/waltc/BLACKBERRY_OBSERVATORY.htm
> >
> > - ------=_NextPart_000_0003_01C43159.34456530
> > Content-Type: text/html;
> > charset="iso-8859-1"
> > Content-Transfer-Encoding: quoted-printable
> >
> > <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
> > <HTML><HEAD>
> > <META HTTP-EQUIV=3D"Content-Type" CONTENT=3D"text/html; =
> > charset=3Diso-8859-1">
> >
> >
> > <META content=3D"MSHTML 6.00.2800.1400" name=3DGENERATOR>
> > <STYLE></STYLE>
> > </HEAD>
> > <BODY style=3D"FONT-SIZE: 10pt; FONT-FAMILY: Arial; BACKGROUND-COLOR: =
> > #ffffff"=20
> > bgColor=3D#ffffff>
> > <DIV><SPAN class=3D556523002-04052004>Hi folks,</SPAN></DIV>
> > <DIV><SPAN class=3D556523002-04052004></SPAN> </DIV>
> > <DIV><SPAN class=3D556523002-04052004>I have been having dec problems
> > on =
> > my 12"=20
> > LX-200 classic. It's not the clutch like I thought. I
> > pulled =
> > the=20
> > cover off tonight and marked the clutch and worm wheel. When I =
> > goto'ed=20
> > back and forth between two stars with a good separation in dec, my =
> > pointing got=20
> > way off (worse than 10 degrees) but the clutch plate and worm wheel =
> > stayed lined=20
> > up perfectly. There was no RA shift -- only Dec.</SPAN></DIV>
> > <DIV><SPAN class=3D556523002-04052004></SPAN> </DIV>
> > <DIV><SPAN class=3D556523002-04052004>From my little understanding of =
> > the system,=20
> > I am guessing either the gear reduction box has a problem or the worm =
> > and worm=20
> > wheel are partially binding. The dec adjustment knob is fairly =
> > tough to=20
> > turn. The dec drive makes a much louder egg beater noise than
> > the =
> > RA=20
> > system does.</SPAN></DIV>
> > <DIV><SPAN class=3D556523002-04052004></SPAN> </DIV>
> > <DIV><SPAN class=3D556523002-04052004>Any thoughts, pointers would be =
> > very much=20
> > appreciated.</SPAN></DIV>
> > <DIV><SPAN class=3D556523002-04052004></SPAN> </DIV>
> > <DIV><SPAN class=3D556523002-04052004>Clearest skies,</SPAN></DIV>
> > <DIV><SPAN class=3D556523002-04052004>Walt Cooney</SPAN></DIV>
> > <DIV><SPAN class=3D556523002-04052004>Blackberry =
> > Observatory</SPAN></DIV>
> > <DIV><SPAN class=3D556523002-04052004><A=20
> > href=3D"http://members.cox.net/waltc/BLACKBERRY_OBSERVATORY.htm">http:
> > //m=
> > embers.cox.net/waltc/BLACKBERRY_OBSERVATORY.htm</A></SPAN></DIV></
> > BODY></=
> > HTML>
> >
> > - ------=_NextPart_000_0003_01C43159.34456530--
> >
> --
> <end of message>
> ******************************************************************
> * http://homepage.mac.com/tarashnat/astrophoto/welcome.html *
> * 73°59'18.4"W 40°43'37.2"N or 74°25'24.4"W 41°40'42.0"N *
> ******************************************************************
>
>
>
>
>
>
View index by [date] [author] [subject]
Previous message: Re: [M]: 7" Mak Optical Cleaning Question, Email address hidden
Next message: [M]: OT: XHTML Test Page Results, Email address hidden
|
|