You can use the telescope and the camera via ssh login and screen. See description here: Usage of the screen program
An example for ssh login:
ssh -X firstname.lastname@example.org where user is your username on
Or, alternatively, you can use x2go to connect to the RCC control computer,
To use x2go, you need the following setup:
m5outside of the konkoly network, you have to tick
Use proxy server for SSH connection.
Set display DPIand set it to 96.
m5, add your folder here.
cd /data/user/YYYYMMDDAlways save your fits files into the data folder!
rcc-testIf everything is green, proceed further. If not, contact the support astronomer.
Main pickoff mirroris
on, the telescope is ready for spectroscopic observations. If not, type
acectrl --start. For help see
ds9. Check the telescope:
set focus 81.2
source /usr/local/ccdsh/scripts/load-spec.ccdshThis will load the camera driver.
status; rcc statusin CCDSH. If everything is green, proceed further.
get temperatureIf it is not cooled down, check the status of the cooler (should be turned on):
cooler --statusCool down the camera:
set temperature -40
rcc-autoguide.qsi --temperature -30
set dome slit open
rcc guidercap open
set mount track on
rcc dome auto
rcc tubecover open
rcc mirrorcover open
rcc status. If everything is opened and green, proceed.
acectrl --mode thar. Starting with some ThAr spectra can easily check whether the bench collimator optics is in focus and such spectra can also be taken while waiting for the bench camera to completely be cooled down.
acectrl --spectrum-focus [+|-]stepto fine-tune in the focus position. If the ThAr spectra are completely blurred, reset the collimator focus using
acectrl --spectrum-resetand then start tuning with the focus. Don't forget to explicitly specify the sign of focusing steps!
mintronctrl -g 6 -e 5
acectrl --led 0.7.
acectrl --fiber-focus [+|-]step
acectrl --led 0.
set focus ...to focus the telescope in order to have a sharp image on the on-axis fiber camera (the approximate telescope focus value for the spectrograph is around 81.2, depending on the weather conditions).
acectrl --mode thar; !sleep 4; sequence -n %N-%F-thar-5s 1*([object,time=5]); !acectrl --mode science
acectrl --mode science.
mintronctrl -g 6 -e 5
staralt 'beta cvn'
slew 'beta cvn'In case of any problem, you can stop the slewing process by
set mount stop. This will turn off also the tracking of the telescope.
rccpanel) in order to move the target star behind the fiber. If your target is not where you want it, type in a console:
rccpanel --speed 8 &. This will bring up a small panel. With the arrows you can move the telescope. You can adjust the speed, max. is 10. Check the position again with a test image. If the target is where you want it, start the autoguiding. First, create a test image with the guider. Type in a console:
rcc-autoguide.fli --exptime 10 -o x.fitsAnd:
xpaset ds9 fits < x.fitsIf there are more than 10 stars, you can start the autogide with this command in a console:
rcc-autoguide.fli --exptime 10 --relax 5 --pointThis will do a 10 seconds exposure, and wait 5 seconds until the next. And in the meantime it will adjust the position of the telescope. If you have less than 10 stars in the guider FOV, use the
--fineoption, instead of the
--point. Stop autoguiding only during "Relaxing" using
ctrl+c. Stop autoguiding first if you want to move to an other target!
sequence -n %N-v987cas-60s 10*([object,time=60])This will take 10 images with 60 seconds exposure time. The output fits image name starts with the date.
When you finished observing, stop the autoguider when it is in a relax state with
ctrl+c. Also, you can stop a sequence or a script with
Warm up the guider camera. In a console:
rcc-autoguide.fli --temperature off
Stop the spectrograph: The following series of commands should be executed:
acectrl --mode science. This command will also switch off the ThAr lamp and flat lamp if these were turned on berfore.
acectrl --led 0.
acectrl --status. The above two commands ensure that no light sources are left turned on and hence the spectrograph frontend box is completely dark. This is essential if alternate instrumentation mounted below the frontend box is going to be used.
set mount track off
rcc dome manual
rcc mirrorcover close
rcc tubecover close
rcc guidercap close
set dome slit close
rcc slew 0 47.8
set dome azimuth=156.3
After a few minutes, check that everything is ok and closed in CCDSH:
status; rcc status
Turn on the lights in the dome:
set dome light 1 on/off
Check the telescope on the webpage:
Turn off the lights in the dome:
set dome light 1 off/on
After you finished making the calibration images you can warm up the camera:
set temperature off
The temperature of the camera should rise slowly. You don't have to warm completely up the camera, but in case of storms and other anomalies it is recommended.
In case of any problem consult the Troubleshooting page and/or notify the support astronomer.