ALFOSC GAIN and RON test instructions
Should be done during the day time.
Taking images
- Get the Beta Light Source from its drawer on the wall next to the filter cabinet. Don't drop! See Safety precautions for Beta Light Source.
- Put beta light into FASU B, position 6, align with marks on slot edge
- Put FASU control to local, open shutter
- Close FASU covers or turn off all lights from dome and close the door
- Update the ALFOSC filter wheel setup definition file to include "Beta
Light" using the
GUI editor.
For unforeseen cases, it is possible to manually edit the setup file
(~alfosc/src/uif/setup/fasub.def). Please take great care to adhere to the
format instructions
when you are using a text editor.
- ALFOSC UIF: press "read setup" button
- Start the ALFOSC software in
sequencer mode .
- Run qc-script, this will:
- Position all the wheels correctly
- Sets the controller and takes images, amplifiers A and B, for 3
read-out speeds, altogether 6 sets of images
- Analyses the images, and compares the new RON and GAIN values to the archival values.
If the new values differ more than 3-sigma from the archival value(s), it is recommended
to rerun qc-script, in order to verify that the change is real.
- Updates the database if the user wishes.
- Check here for nice pictures,
i.e. the results
- Take out beta light from FASU B and put back in its drawer.
- edit fasub.def to remove "Beta Light"
- ALFOSC UIF: press "read setup" button
The old qc-data can be found from
here.
The old instructions, including non-sequencer can be found
from here .
How analysing scripts work
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