* '''IMPORTANT''' * If you do any significant activity (like observing, repairing, changing, cleaning, etc.) please report on our [https://svn.mpia.de/trac/gulli/king/blog blog], by adding a [https://svn.mpia.de/trac/gulli/king/blog/create new post]. This is our logbook, and essential to keep things up and running. Thanks - your KING team. * If you do not have access to the blog and you want to, please ask for your credentials to Conchi Cárdenas (conchi@…). [[CollapsibleStart(KING upcoming events)]] [[CalendarQuery(url=https://svn.mpia.de/davical/caldav.php/king, calendar=all, username=ln_user, password=anavrin, days=60)]] [[CollapsibleEnd]] [[CollapsibleStart(Computer info)]] * the computer in the dome is called ''king'' (current IP: 149.217.45.16) * currently we run openSUSE 12.3 (Dartmouth) (i586) (run ''>less /etc/release (or os-release)'' if you need to know more) * typical users@king ar ''staff'', ''obs70'', ''praktikum'', for passwd's, user admin etc, please contact king@mpia.de * ''staff'': default user to login and do something * ''tecs'': setup remote monitoring via [http://king.mpia.de/] (vpn or sciencenet required) * ''ccd'': CCD engineering account * ''praktikum'': to do F30 advanced lab course * ''obs70'': to observe * check [http://www.linfo.org/uid.html link] if you need to know about linux users * ''king'' should run ntpd * one of the reason to put ''king'' downstairs (and run long cables) is to keep it warm, cosy, and free of flies: [[BR]] [[Image(king_flies.jpg, 300)]] * ''king'' should be connected to ntp-server ''time.mpia.de'' to ensure proper time-stamping of ccd read fits files [[CollapsibleEnd]] [[CollapsibleStart(Observing FAQ)]] * '''Useable nights''' * ''Useable'' are night where you see stars... Tom Herbst ([http://www.mpia.de/homes/herbst homepage]) run an all-sky camera for a good part of the year, and estimated about 75nights / year, or 6n/month, although I dont have the seasonal statistics, so there might be considerable annual trends. In fact, Tom reported {{{ Note that these were nights that started out very promising. Sometimes the clouds came in, on the other hand, on other nights it undoubtedly cleared up in the middle of the night. The final comment is that these nights came in bunches… perhaps 4 good days in a row followed by nothing for a week or two. }}} * '''General sources of information''' * check KING website: [https://svn.mpia.de/trac/gulli/king/wiki/WikiStart] * email to KING list: [mail to: king mpia de] * physical access to the telescope is usually granted after having done the cryo safety and operations training (contact Werner Laun: laun@mpia.de) * for operating and observing with KING, you should do a first run together with trained personel, please contact our mailinglist for coordination: king@mpia.de * if you are a local student, who needs or wants teaching experience, you might be interested to get training on both cryo and telescope operations via tutoring our advanced lab course F30: ([https://svn.mpia.de/trac/gulli/king/wiki/WikiStart/FP30Doc link]) * '''Usual start routine requires''' * Liquid nitrogen filling in the afternoon (only be trained personal!); LN typically lasts for one night * 30min setup time * '''Pumping the cryostat ''' * '''Read the detector '''(omitting the cryo-part) {{{ 1. Check that the CCD electronics is ON: is the green button on the control desk labelled "INSTRUMENTIERUNG" on? If not, then proceed to step 6. 2. Take a test image: "ccdread -w 100x100". This will very quickly get a bias frame of the central 100x100 pixel and safe it as "test.fits". Check the image content, either by opening it in ds9 or displaying the header information with "imhead test.fits" and looking at the data statistics. If it is all zeroes, you need to reset the CCD. If not, you're fine and may proceed to step 9. 3. Power down relais box & readout electronics with the command "ccdstop". 4. Switch off "INSTRUMENTIERUNG" on the control desk. 5. Wait 5 seconds. 6. Switch on "INSTRUMENTIERUNG". 7. Power on relais box with command "ccdstart". 8. Get a new test image, see step 2 for instructions. 9. All should be well now. Clear skies and good observing! (10. If there is still a problem: notify someone, e.g. write a mail to king@mpia.de, call JUP, but don't just ignore it.) }}} ''' REMINDER''' : Interrupting the ccdread process with Ctrl-C is NOT a good idea. Often the CCD will be in a limbo state after that. If you do this nevertheless, you should at least take a test image afterwards to verify that it is still working. You most likely will have to unlock the CCD first using "ccdunlock" and typing "YES" (in capitals!) at the prompt whern asked for it. If the CCD does not produce valid images afterwards, follow steps 3-8. * '''Switch filter''' * well, SWITCH FILTERS..., with your fingers and screwdrivers, not buttons, they are in an aluminum box, see pictures attached below, and please do NOT loose the small screws to fix the cover; * this activity can also be helpful, when you need to clean the filters * '''If ccdread displays the error message ERROR: No FITS file produced!''''''''' * in terminal: ''$ ccdstop'' * Check if the ''"Antriebe"'' Button is switched on (''"Ein"'')! * in terminal: ''$ ccdstart'' * '''If ccdread produces a FITS image where all values are 0:''' * There was probably a problem with the initialization of the CCD * Do: * in terminal: ''$ ccdstop'' * set the ''"Instrumentierung"'' button to Off (''"Aus"'') * wait 5 seconds * set the ''"Instrumentierung"'' button to On (''"Ein"'') * in terminal: ''$ ccdstart'' * '''If ''Instrumentierung'' on/off switch is not illuminated, although you think it should be ON''' * This usually does ''not'' mean that the switch does not work anymore * check commands like ''$ ccdread'' and ''$ cctemp''. If for instance you get a useful chip temperature, then ''Instrumentierung'' is ON, since the temperature read and the instrumentation use the same power. * Unfortunately the mini bulbs behind the switch fail regularly, and need to be replaced. Check with electronics, it's a standard piece. * '''If clock is lost, and the display show only zero's ''' * it usually looks like this: [[BR]] [[Image(Telescope-Control_module.jpg)]] * it usually implies that the display does not react to moving the telescope; then simple reboot is not enough, but you need to reset the system clock manually: * to reset the clock: * turn key-switch to ''Set'' * press ''DT''-switch, set data (e.g. 080917 for Sep 08, 2017, note the German ordering!) * confirm with ''ENTER'' * press ''UT''-switch, set time, press ''ENTER'' once more to confirm * turn back key-switch to central position: clock should run * not yet clear when this happens (power outages maybe?)... * '''Instrumentation panel seems completely dead, nothing blinks or reacts''' * you probably hit by accident the emergency button (''' do not do it again ''') * to recover * release the emergency button by twisting * find the key in the first drawer of the chest of drawerss, just behind the exposition table. The key is marked with a label: "70 cm Telescope Control Electronics". * turn the power key gently clock-wise until the end, then counter-clockwise until the other end until you hear a soft ''click'', then release back in upright position, and remove the key [[Image(WP_20171018_15_17_29_Pro.jpg, 100)]] * start the console by pressing the usual ''instrumentation'' key [[CollapsibleEnd]] [[CollapsibleStart(Science cases)]] * [http://www.mpia.de/de/institut/mitarbeiter/50637 Trifon Trifonov]: Novae hunting in M31 (or similar) {{{ The rate of Novae in M31 is about 30-50 per year! That means that one has very good chances to spot a Novae at maximum brightness. Once with students we discovered one in M31 and even had an astronomical telegram. It is a fun project and many professional and amateur astronomers are hunting for Novae in M31 (even supernovae ...). Actually to hunt Novae one must be very fast to announce a discovery since many other people around the globe are also observing even with robotic telescopes. This project would require someone to develop a fast pipeline which cross-check for new objects in the field and performs photometry on them. It shouldn't be so complicated to be done. [...] Alternatively [http://diffractionlimited.com/product/maxim-dl/ MaximDL] is a handy amateur tool for that and LSW has some experience with this software. Particularly for science, any data from the Novae light curve helps to better understand the Maximum magnitude vs. rate of decline (MMRD), which has a potential to be used as a distance indicator. The FOV of the KING telescope (~19arcmin diameter) is a bit small, but still it can be used for the central part of M31 (where most of the Novae occur if i am not mistaken). What I can recall is that Novae in M31 typically have apparent magnitude in R about 16 mag. The exposures usually about 900 sec for a good S/N but often I take several (about three) in BVR and only from time to time in H+alpha. So 900sec = 15 min + overhead ~ 5 min equal to ~ 20 in filter. If we take 3 exposures in each filter = 1 h. BVR = 3 h/ night Alternatively, if this time is too much then only images in R are sufficient to discover Novae. }}} * Mapping Andromeda * With our 19arcmin field-of-view (FoV) we can do a mosaic of pictures for Andromeda. One can later combine all the images and reconstruct the Andromeda galaxy with very high signal to noise image. Thats might be a cool to project for a student. Also, M51 is a good object of interest (the supernovae rate there is very high!). * Asteroids (any experts around) * Our CCD photometry lab course teaches how to do resolved star photometry in a cluster, for scientific projects you probably would want a better site than Konigstuhl... * Spectroscopy? * Precise photometry on very bright, variable stars? [[CollapsibleEnd]] [[CollapsibleStart(KING users)]] below list has key access, and probably enough experience to handle the hardware, probably needs to be udpated... you can find contact details under our usual MPIA [http://www.mpia.de/de/institut/mitarbeiter staff list] || Name || || Aida Ahmadi || || Asmita Bhandare || || Sven Buder || || Johanna Coronado || || Christina Eilers || || Hector Hiss || || Josha van Houdt || || Alex Hygate || || Felix Jankowsky || || Sarah Leslie || || Victor Marian || || Karan Molaverdikhani|| || Eric Müller || || Vianak Naranjo || || Ariana Picotti || || Kalyan Radhakrishnan || || Manuel Riener || || Michael Rugel || || Andreas Schreiber || [[CollapsibleEnd]]