Results 1 to 10 of 12

Threaded View

  1. #1

    Default Moonlite NiteCrawler Rotator PA Issue

    I've been having trouble getting the mechanical angles of my Moonlite NiteCrawler rotator/focuser to match up with the PA in ACP.

    The first thing I did was manually slew the rotator to 0 degrees. I took an image using MaxIm, analyzed it with Pinpoint and got an offset of about -4.5 degrees. Not great, but this alignment corresponded with my visual inspection.

    So this evening I tried using Scheduler to run dusk flats and the rotator was immediately told to rotate to the mechanical angle 254. Obviously nowhere near a PA=0 or PA=180. i'm not sure where that number came from. I tried using the calibrateguider and centerscope scripts to get the PA in ACP to match the 4.5 degree offset but the results were all over the board.

    I went ahead and set up a plan in Planner to take an image series. I manually rotated to mechanical=0 and then started the plan. The first thing that happened was the rotator was told to rotate to 71.2 degrees. As FocusMax went through its routine I noted that the rotated angle of the plate solve was 66.7 degrees (71.2-4.5=66.7). After FocusMax completed its focus run ACP took a pointing image and saw that there was a 71.1 degree rotator error. The rotator was told to move to 142.3 degrees. Not sure what is going on. I've attached the log of the Plan run.

    I do know the NiteCrawler is set up to move to a position in either direction using the shortest path. My limits are set at +190 and -190 in order to avoid cord wrap.

    Suggestions welcome.
    Attached Files Attached Files
    Dan Simpson
    Galisteo Observatory
    Santa Fe, NM

 

 

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Pinpoint issue ( and that seems to be the last issue)
    By Stephane Kolijn in forum Pre-Sales Technical Questions and Help
    Replies: 17
    Last Post: Oct 23, 2014, 17:20
  2. Cable wrapping on Rotator (was: Help understanding rotator behavior)
    By Wesley D. Grimes in forum Hardware/Software/Driver Topics Not Directly Related to Our Software
    Replies: 6
    Last Post: Sep 25, 2014, 16:18
  3. Rotator applet
    By LaVor Jenkins in forum Help Using the Comunication Center
    Replies: 4
    Last Post: Oct 22, 2012, 22:43
  4. ACP Rotator Controller will not connect to my Pyxis 2" Rotator
    By fehner in forum Hardware/Software/Driver Topics Not Directly Related to Our Software
    Replies: 6
    Last Post: Oct 1, 2011, 05:31
  5. Rotator error
    By Dale Liebenberg in forum Hardware/Software/Driver Topics Not Directly Related to Our Software
    Replies: 1
    Last Post: Apr 21, 2010, 19:08

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •