What to do NOT FRB ToO FRB phenomenon

Photometry Spectroscopy Polarimetry Trigger email Tools

ALFOSC MOSCA NOTCam StanCam

Photometry: StanCam

1. If the trigger request using StanCam in parallel with MOSCA or NOTCam, please check StanCam and MOSCA together and StanCam and NOTCam together
   
   
   
2. Go to the folder ~obs/scripts/52-024
   
   
   
3. Execute the script too-stancam-photometry.sh, and too-stancam-flat.sh and too-stancam-bias.sh, if asked for it
   
   
   a)./too-stancam-photometry.sh
   
   Description:

   First preset the telescope to the TCSTGT (TCS Catalogue Entry, OBJECT). The user is requested to check guiding and press return to continue if OK. Then NUM_EXP exposures with EXP_TIME exposure time are taken for each filter FILTER. Optionally, a dither pattern DITH_PAT with dither step DITH_STEP and CCD window xsize XSIZE and ysize YSIZE may be set.
   
   The script exits with full CCD window, high gain, field rotation 90 and guiding off. The filter wheel remains in the position set by the script.
   
   Make sure that the standard filters (fixed setup) are used.

   Format:
   
   ./too-stancam-photometry.sh OBJECT FILTER,EXP_TIME,NUM_EXP ... [dither=DITHER xsize=XSIZE ysize=YSIZE]

   OBJECT: Object name (as defined in the TCS catalogue)
   FILTER: FILT_POS[:FILT_FOC]
   FILT_POS: Filter wheel position | FILT_ALIAS
   FILT_ALIAS: U(1) | B(2) | V(3) | R(4) | I(5) | Z_SDSS(7)
   FILT_FOC: Filter focus offset
   EXP_TIME: Exposure time (in seconds)
   NUM_EXP: Number of exposures
   DITHER: DITH_PAT:DITH_STEP | no (default)
   DITH_PAT: Dither pattern (2-point-x | 2-point-y | 3-point-x | 3-point-y | 4-point | 5-point | 9-point | abba-x | abba-y)
   DITH_STEP: Dither step (in arc seconds)
   XSIZE: CCD window x size (in pixels) | full (default)
   YSIZE: CCD window y size (in pixels) | full (default)

   Example:
   
   ./too-stancam-photometry.sh GRB100316D U,60,3 B,60,3 V,60,3 R,60,3 I,60,3 Z_SDSS,60,3 dither=3-point-x:10

   Will take 3 exposures of 60 seconds each in each of the filters U(1), B(2), V(3), R(4), I(5), z' (7) of GRB100316D. Dithering with 3-point-x pattern and a 10 arcsec step will be used. Full CCD window will be used.
   
   

   Note: If the command is getting too long you can add a line break, e.g.
   
   ./too-stancam-photometry.sh FRB100316D U,60,3 B,60,3 V,60,3 \
   R,60,3 I,60,3 Z_SDSS,60,3 dither=3-point-x:10
   
   Remark about the dither mode.
   
   
   1. What happens if the number of exposures exceeds the number of available positions per dither cycle, i.e., 3 exposures with a 2-point dither pattern?
      
      It is OK to do this but not optimum. The starting point of the following dither cycle can be identical to first position of the previous one, e.g., for the 2-point and 3-point dither patterns, or identical to another position of a previous cycle. This can be avoided by picking a dither pattern that provides more positions than your number of exposures.
      
      
   2. Is the dither mode reset between any two command executions?
      
      Yes. Re-pointing the telescope to a slightly different position before executing the second command might be sensible to do.
   
   
   b) ./too-stancam-flat.sh
   
   Description:

   NUM_EXP flat exposures are taken for each filter FILTER. For each filter a test exposure is taken first. The user is requested to check the count level in the ds9 window and press return if OK (~20000 ADU). Otherwise a new exposure time has to be entered. This process is repeated until a satisfactory count level has been achieved. Optionally, the CCD window xsize XSIZE and ysize YSIZE may be set.
   
   The script exits with full CCD window and high gain.
   
   Make sure that the standard filters are used.

   Format:
   
   ./too-stancam-flat.sh FILTER,NUM_EXP ... [dither=DITHER xsize=XSIZE ysize=YSIZE]

   FILTER: FILT_POS[:FILT_FOC]
   FILT_POS: Filter wheel position | FILT_ALIAS
   FILT_ALIAS: U(1) | B(2) | V(3) | R(4) | I(5) | Z_SDSS(7)
   FILT_FOC: Filter focus offset
   NUM_EXP: Number of exposures
   DITHER: DITH_PAT:DITH_STEP | no (default)
   DITH_PAT: Dither pattern (2-point-x | 2-point-y | 3-point-x | 3-point-y | 4-point | 5-point | 9-point | abba-x | abba-y)
   DITH_STEP: Dither step (in arc seconds)
   XSIZE: CCD window x size (in pixels) | full (default)
   YSIZE: CCD window y size (in pixels) | full (default)

   Example:
   
   ./too-stancam-flat.sh U,3 dither=3-point-x:15

   Will take 3 flat exposures in each of the filters U(1). Full CCD window will be used. Dithering with 3-point-x pattern and a 15 arcsec step will be used (recommended).
   

   c) ./too-stancam-bias.sh
   
   Description:

   NUM_EXP bias exposures are taken. Optionally, the CCD window xsize XSIZE and ysize YSIZE may be set.
   
   The script exits with full CCD window and high gain.

   Format:
   
   ./too-stancam-bias.sh NUM_EXP xsize=XSIZE ysize=YSIZE]

   NUM_EXP: Number of exposures
   XSIZE: CCD window x size (in pixels) | full (default)
   YSIZE: CCD window y size (in pixels) | full (default)

   Example: ./too-stancam-bias.sh 10
   
   Will take 10 bias exposures. Full CCD window will be used.
   
   
   

4. Send an email to the FRB team and add in the End-Of-Night report, which images were made, and approximately how much time you spent in total.

   
   

5. If you have any problems or questions contact your support on duty. You are also welcome to contact the FRB team or the PI (Daniele Malesani) of the program either with e-mail or phone a member of the team using the contact information in the trigger email.