[sac-forum] Re: Digital setting circle question

Dan, yes, no problem - even if it is subconsciously . . . .

AJ Crayon
Phoenix, AZ

  ----- Original Message ----- 
  From: Dan Gruber 
  To: sac-forum@xxxxxxxxxxxxx 
  Sent: Saturday, March 29, 2008 10:32 AM
  Subject: [sac-forum] Re: Digital setting circle question


  AJ, I appreciate the fact that you're keeping me in mind.

   

  Dan Gruber

   

  -----Original Message-----
  From: sac-forum-bounce@xxxxxxxxxxxxx [mailto:sac-forum-bounce@xxxxxxxxxxxxx] 
On Behalf Of AJ Crayon
  Sent: Saturday, March 29, 2008 8:44 AM
  To: sac-forum@xxxxxxxxxxxxx
  Subject: [sac-forum] Re: Digital setting circle question

   

  Talk about cockpit errors just who is the Dan in my message?  Should have 
been Steve.  Don't know how that was phat phingered.


  AJ Crayon
  Phoenix, AZ

    ----- Original Message ----- 

    From: AJ Crayon 

    To: sac-forum@xxxxxxxxxxxxx 

    Sent: Friday, March 28, 2008 9:30 PM

    Subject: [sac-forum] Re: Digital setting circle question

     

    Dan, sorry for not getting to your initial query quickly, wife and I went 
out to lunch; but the responses were quite good and accurate.

     

    Re - resetting the platform.  Once the platform is reset and the Reset 
button on the SC is pressed the scope is not pointing where it was before the 
reset - an obvious comment.  In regards to going back to the last object - that 
is not necessary at all.  Basically, when I do a reset, I push-to an object 
bright enough to see in the 9X50 finder, do a realign, then the reset as 
described and, finally as a check against cockpit errors, go back to the 
object.  In the past, that is last year and beyond, it was accurate enough, 
with another reset, a good 80%.  Sooo, basically, your statement is on target.  
It takes just a few seconds to verify the alignment is correct, otherwise it 
may take a while to realize such.

     

    Hope this helps and keep the questions coming.


    AJ Crayon
    Phoenix, AZ

      ----- Original Message ----- 

      From: Steve D. 

      To: sac-forum@xxxxxxxxxxxxx 

      Sent: Friday, March 28, 2008 7:26 PM

      Subject: [sac-forum] Re: Digital setting circle question

       

      Hi everyone,
         Back from the oral surgeon.  Everything went ok, but they couldn't 
keep me numb, for some reason.
        Anyway, thanks for all the responses.  Most helpful.  I'm not planning 
anything specific, (Tom, AJ, just wondering how the software deals with the 
changing aspects of sky tracking, and if it's mount dependant or not.
        Peter pretty much answered my initial question, but as these things go, 
one question answered generates 5 others.  (Thanks for the answer, Peter.  I 
may just use the link to do some more research in the future.)  Paul came 
closest to answering all my subsequent questions, saying the S/W converts all 
coordinates to polar coordinates, as long as it knows how the mount behaves.  
Thanks Paul.
        AJ was whom I expected to hear from most authoritatively, as I knew he 
had one, and his answer is great.  The link to the SC commander manual will 
come in handy, and I really liked the "cockpit errors" comment.  :-)  I have as 
many of those as I can handle, thank you very much.  To answer your question, I 
don't have one as yet.  My question is more based on the mechanics of the DSC.  
Actually, the software side of it, based on given mechanical systems.  Having 
been in electronics for 30 some years before, these type things still pique my 
curiosity from time to time.  Can't help it.
      Rick's second answer was great, as it gave some insight into the 
software, (which was my goal), but raises another question.  That question 
being, and this could go to AJ as well, when you reset the platform, is it 
required of you to reacquire the same target you were on before the reset?  
This would make sense to me, as it would give the S/W a benchmark from which to 
work.  It could then recalculate to go from there.

        Tom: Confound you!  Let me get the chair working, first!  THEN we can 
think about automating it.  (But it quickly strikes me, that the Meade LX200 
S/W operates an Alt/Az mount.  Hhhhmmmmm...)

      Thanks again, everyone.

      Steve Dodder
      President, Saguaro Astronomy Club
      Director, Stone Haven Observatory 
      fester00@xxxxxxxxxxx 
      http://www.stargazing.net/Astroman


--------------------------------------------------------------------------

      From: fester00@xxxxxxxxxxx
      To: sac-forum@xxxxxxxxxxxxx
      Subject: [sac-forum] Digital setting circle question
      Date: Fri, 28 Mar 2008 10:51:46 -0700

      Howdy,
         Here's a question, maybe technical, about DSC's such as Sky Commander. 
 If I remember right, they mount on an alt/az Dob and calculate the position of 
objects in Altitude and Azimuth.  What happens when you put the alt/az mount on 
a platform?  Is the calculation still purely alt/az, or is the DSC informed 
somehow and adjusts the algorithm?  If I'm totally wet, let me know.

      Thanks.

      Steve Dodder
      President, Saguaro Astronomy Club
      Director, Stone Haven Observatory 
      fester00@xxxxxxxxxxx 
      http://www.stargazing.net/Astroman


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