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Autoguiding with Lhires3

This page explains how to adjust Audela's autoguiding tool according to LHIRES orientation.

We give three examples:

  1. Lhires slit is parallel to the right ascension
  2. Lhires slit is parallel to the declination (90° rotation to the left)
  3. Lhires slit is parallel to the declination (90° rotation to the right)

Procedure

For the purposes of the procedure the telescope is assumed to be aiming at the local meridian line and the bottom of the guiding camera is taken to be turned towards the tube of the telescope.

To adjust Lhires inclination angle:

  • Click on the Setup button of the autoguider tool in Audela
  • Type in angle value of camera tilt
  • Click on OK to validate
  • Case 1 - Lhires in normal position (slit parallel to the RA)

    Cameras are above and Lhires is below.

    The angle must be 0°.

    North is in the top of the image.

    Case 2 - Lhires turned to 90° to the left (slit parallel to the DEC)

    Cameras are on the left and Lhires is on the right.

    The angle must be 90°.

    North is on the right of the image.

    Note: On the image, the slit remains horizontal whatever Lhires orientation.

    Case 3 - Lhires is turned to 90° to the right (slit parallel to the DEC)

    Cameras are on the right and Lhires is on the left.

    The angle must be 270° (or -90°).

    North is on the left of the image.

    Note: On the image, the slit remains horizontal whatever Lhires orientation.

    (*) In AudeLA version 1.4.0, cardinal points are not correctly positioned. It is only a display error and autoguiding IS correctly implemented. This error will be corrected in a future version.

     
    en/usage/autoguider_spectro.txt · Last modified: 2010/10/17 20:45 by michelp     Back to top