Changes between Version 13 and Version 14 of WikiStart/Documentation


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Timestamp:
Feb 21, 2018, 3:29:32 PM (7 years ago)
Author:
Conchi Cárdenas Vázquez
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  • WikiStart/Documentation

    v13 v14  
    11= KING 70cm Telescope Documentation =
    2 Currently you can only retrieve the scanned original documentation including all schematics. This will be broken down into more convenient parts, partially translated and augmented with cryo-/vacuum documentation.
    32
     3
     4A bit of history (according to Ulrich Grözinger's excellent memory):
     5Design and construction at MPIA, start of project ~1981 (as filler project). A very similar copy was build. The copy was originally planned for the [https://de.wikipedia.org/wiki/Gamsberg Gamsberg] in Namibia, partially owned by MPIA, but eventually given away to an association of amateur astronomers. KING was erected in the Eastern dome of the Elsässer lab in May 1986, first light in June 1986, first presentation to the public at the open-house day in July 1986 (ELT designers can only dream of such an implementation speed...).
     6
     7Furthermore:
     8{{{
     9Spiegel wurden von Fa. Kaufmann in Crailsheim beschafft.
     10Sockel ist mit Sand gefüllt (ca. 1.5t), Frontring ist ausgeschäumt
     11Bleigewichte (zum Auswuchten) am MPIA gegossen, Auswuchtgewichte f. Stundenachse
     12(Gegengewicht) können durch elektr. Taster am Pult verschoben werden.
     13Die Auflösung der Inkremental-Positionsencoder beträgt rechnerisch 50 marcsec.
     14}}}
     15
     16The telescope uses a ''German'' mount: [https://de.wikipedia.org/wiki/Deutsche_Montierung link].
     17
     18We uploaded the scanned original documentation including all schematics. For detailed construction drawings please consult the archive of the MPIA construction department [http://www.mpia.de/en/institute/technical-depts/eng-design link].
    419Downloads:
    5 
     20* [https://svn.mpia.de/trac/gulli/king/attachment/wiki/WikiStart/Documentation/MPIA_70cm_Teleskop_4343_001.pdf MPIA_70cm_Teleskop design] A few drawings to start with giving the size scale of the hardware.
    621* [https://svn.mpia.de/trac/gulli/king/attachment/wiki/WikiStart/Documentation/king70_docu_orig_intro.pdf ​ Introduction of scanned documentation (PDF, 1.5MB)] This includes instructions how to get the telescope back out of the horizon limits!
    722* [https://svn.mpia.de/trac/gulli/king/attachment/wiki/WikiStart/Documentation/king70_docu_orig_overview_drawings.pdf Overview drawing from scanned documentation (PDF, 2.1MB)] Includes schematic drawings of control desk, main electric installation and motor drive principle.
    … …  
    924* [https://svn.mpia.de/trac/gulli/king/attachment/wiki/WikiStart/Documentation/king70_docu_orig_cabling.pdf Scanned cabling plans (PDF, 3.7MB)] Let's sincerely hope you will never ever need it.
    1025* [https://svn.mpia.de/trac/gulli/king/attachment/wiki/WikiStart/Documentation/king70_docu_orig_encoders.pdf Various encoder datasheets (PDF, 7.1MB)]
     26* [http://www.mpia.de/ASTRALUX/Papers/AstraLux_Diploma_Thesis_2007.pdf Diploma] thesis of Felix Hormuth lists some technical details of KING, the Lucky Imaging experiment AstraLux, and a pointing model of the telescope, reducing the 10' uncalibrated pointing accuracy down to ~1'.
     27
     28= Issues, Problems, Upgrade plans (should be moved to a ticket list one day) =
     29[[CollapsibleStart]]
     30* pointing model of the telescope
     31  automatic defocus (change for each filter)
     32  pointing model is off by 15-20min
     33* tracking issue (gets stuck, or jumps once in a while)
     34* turbo pump:
     35  * Das Problem war die defekte Anzeige der Turbopumpe. Meistens funktioniert die automatische Umschaltung der Anzeigebereiche nicht und sehr häufig bleibt die Nadel einfach irgendwo stehen, obwohl der Druck noch weiter absinkt. Die Pumpe an sich ist in Ordnung, lediglich der Druckmesser sollte gegen ein neues Gerät ersetzt werden.
     36    * Solved. Werner kindly installed a new digital display which should serve our needs.
     37* cleaning of the camera (needs to be opened and thoroughly cleaned)
     38* have a maintenance plan for camera and telescope at some point
     39* have a basic operations manual, in addition to the [https://svn.mpia.de/trac/gulli/king/wiki/WikiStart/Observing#no2 FAQs]
     40* have a automated dome operation
     41  * requires motor encoders to know where you are
     42  * the telescope uses a German mount with the azimuth axis off-centered with respect to the dome, which requires some differential tracking between telescope and dome
     43* computer:
     44  * remove ''hormuth@mpia'' account and related data
     45  * TRAC admin
     46    * introduce the moderator list with write permissions (should have four groups of users: anonymous, autheticated, moderator, admin / superuser)
     47    * update the general KING user list
     48    *
     49  * setup useful backup of ''king''
     50  * check if access permissions to the king trac pages are useful (only certified KING users should see everything)
     51  * enable TRAC ticket system to replace this list
     52  * enable TRAC-blog as lab diary, by posting some basic how-to-use somewhere on these pages
     53  * enable NX-access / integration of ''king'' in the MPIA NX environment
     54  * setup powerfolder; not sure what this referred to probably I meant SVN integration
     55* have a webcam (on TRAC) from inside the dome, and maybe link other cams from outside
     56  * since it runs 24/7, the webcam should NOT emit any light (no LEDs etc), and ideally it sends via WLAN, so we only need a power plug
     57* check Florian trick for hiding emails
     58* go solar
     59
     60
     61[[CollapsibleEnd]]