P68-505: The local transient Universe
PI: E. Kankare, M. Stritzinger, T. Reynolds
ToO + Soft ToO triggers
Observations will be requested with ALFOSC and the OB generator will
be used to request all ToO and SoftToO observations.
To summarise:
Go to the directory
cd ~/scripts/68-505
List the available scripts
ls -lrt
and execute the OB generated scripts requested in the trigger email.
Fixed half-nights service observations with NOTCam
The OB generator will be used to request all observations. For each half night,
the PI will send a 'trigger' through the OB-generator. Note that the trigger
needs to be Compiled and/or Queued by the staff observer, or the staff person
preparing the observations, using the OB-generator.
In order to queue the observations, enter the OB generator and click on the
Queue it! button.
Then compile the scripts manually, either through the
compile buttons in the OB generator or from within the OB queue.
Scripts are placed in the directory ~/scripts/68-505/ as above for
ALFOSC ToO/Soft ToO.
When an OB is queued, an e-mail will be sent automatically to the observer, which
contains all the information about the requested observations, the names and
locations of the scripts, instructions for observing and comments from
the creator of the trigger.
General information on the ALFOSC spectroscopy and photometry:
- Possible required setup:
- Filters: ugriz, (UBVRI)
- Grisms: #4, #7, #8, #18, #19, #20
- Slits: 0.75", 1.0", 1.3"
- If the seeing is better than ~1.2", the 1.0" slit should be used, otherwise the 1.3" one.
- Take 3 imaging flat fields in the required broadband filters using twilight sky, either in the
evening or in the morning, using the alfosc.easyflat script.
- The exposure time of the spectrum depends on the magnitude of the target:
- If V < 17 mag the on-source exposure time is 1 x 900 sec
- If V = 17-18 mag the on-source exposure time is 1 x 1800 sec
- If V = 18-19 mag the on-source exposure time is 1 x 2400 sec
- If V > 19 mag the on-source exposure time is 1 x 3600 sec
- Standards will usually be selected by the triggering individual and OB scripts for observing
these will also be present in ~/scripts/66-506. Typically one of the following spectroscopic
standards is used (sorted in the order of preference):
ING ID |
Name |
RA (J2000.0) |
DEC (J2000.0) |
Exp. time |
FC |
SP1036+433 |
Feige 34 |
10:39:36.7 |
+43:06:10.1 |
100 sec |
Feige34.gif |
SP1234+254 |
Feige 66 |
12:37:23.6 |
+25:04:00.3 |
50 sec |
Feige66.gif |
SP0501+527 |
G191B2B |
05:05:30.6 |
+52:49:56.0 |
120 sec |
G191B2B.gif |
SP1550+330 |
BD+33 2642 |
15:51:59.9 |
+32:56:53.0 |
60 sec |
BD+33.2642.gif |
SP2148+286 |
BD+28 4211 |
21:51:11.1 |
+28:51:52.0 |
60 sec |
BD+28.4211.gif |
- No blocking filter should be used in any of the spectroscopic observations.
- The ALFOSC specific Cookbook can be accessed
here.
General information on the NOTCam photometry:
NOTCam will be used only in the Service part of this proposal. The service time is
on fixed nights and the tracking log will not include these observations.
The OB generator will be used to prepare all observations, and the information
below is only for orientation.
- Possible required setup:
- Take 2 sets (bright and faint with the same exposure time) of 8 imaging flat
fields in the required broadband filters using twilight sky, either in the evening
or in the morning, using the notcam.skyflat script.
- Please, make sure that the target counts (including sky background) remain
linear, i.e. <25000 counts – check & adjust exposure times if necessary. This is
particularly important in the Ks-band.
- Generally the targets are expected to be distant enough that off-source dithering
for background subtraction will not be required and that the on-source exposures can
be used also as sky frames. By default, the observing scripts are based on the 9point
script which carries out a 9 point dither (3x3 grid) observation. However, if separate
sky frames are required a beamswitch script will be used.
- The NOTCam specific Cookbook can be accessed here.
P68 tracking
Program Tracking |
Proposal |
68-505 |
Semester |
P69: 20240401 - 20241001 |
Principal Investigator |
Erkki Kankare, Maximilian Stritzinger, Thomas Reynolds |
Programme |
The local transient Universe |
Instrument |
ALFOSC+NOTCam+FIES |
Time Allocation |
10 hard ToOs 10h, rest soft 60h |
Total Nights |
7.0 |
Type |
ToO+SoftToO |
Notes |
Override. Soft triggers during Nordic service or Technical nights |
Total Time Spent |
08:27 (hh:mm)
|
Proposal |
Date |
Time |
Type |
Targets |
Files |
Comments |
Status |
|
68-505 |
2024-04-01 |
00:41 |
SoftToO |
2023ldh |
ALHd010114 - ALHd010125, ALHd010135 - ALHd010137 |
Target observed successfully in all filters.OB 20240401_too_2023ldh_phot was executed with
clear skies, 20240401_too_2023ldh_phot_z through thin clouds. Both with seeing around 1
arcsec. |
Observed |
|
68-505 |
2024-04-11 |
00:23 |
SoftToO |
HD93521, SN2024cld |
ALHd110124 - ALHd110133, ALHd110206 - ALHd110210 |
Std star and template_spec_1_3 OB ran for SN2024cld. Targets observed in dusty conditions
within seeing constraints of the OBs. |
Observed |
|
68-505 |
2024-04-12 |
00:04 |
SoftToO |
HD93521 |
ALHd120140 - ALHd120145 |
Was only able to observe the standard star due to the calima causing a bad seeing at the end of the night.
During the standard star the seeing was around 1.3 arcsec |
Observed |
|
68-505 |
2024-04-13 |
01:02 |
SoftToO |
HD93521, SN2024cld, 2024gep, 2022prr (failed) |
ALHd130006 - ALHd130036, ALHd130041 - ALHd130044 |
Every target was attempted, and most of them were observed successfully. All the spectroscopy observations were successful, but only one of the photometry OBs (SN2024cld) met the seeing requirements sufficiently. Spectroscopy of 2024gep was tried twice as first time was halted by rising wind speed. The first attempt hasn't been taken account in the time spent. |
Observed |
|
68-505 |
2024-04-14 |
00:11 |
SoftToO |
2024gep, SN2024cld |
ALHd140080 - ALHd140082, ALHd140089 - ALHd140089 |
The observations technically failed because seeing requirements weren't met. I'd still have a look at the data, at least for SN2024cld, because the target in the finding chart was clearly visible in the raw image. |
Failed |
|
68-505 |
2024-04-15 |
00:36 |
SoftToO |
HD93521, 2024gep |
ALHd150103 - ALHd150118 |
The targets were observed successfully in a row during 2'' seeing. |
Observed |
|
68-505 |
2024-04-19 |
01:43 |
SoftToO |
2019lqo, 2024gep, BD332642 |
ALHd190156 - ALHd190165, ALHd190231 - ALHd190251 |
|
Observed |
|
68-505 |
2024-04-20 |
01:00 |
SoftToO |
SN2024cld, BD332642, 2024gep, AT2022fpx |
ALHd200071 - ALHd200082, ALHd200087 - ALHd200092, ALHd200097 - ALHd200103 |
Most of the targets were observed with thin clouds and variable seeing between 1.3-2.0''. AT2022fpx was
observed with clear skies and subarcsec seeing. |
Observed |
|
68-505 |
2024-04-26 |
01:30 |
SoftToO |
SN2024gzk, SN2024cld, BD332642 |
ALHd260296 - ALHd260306, ALHd260350 - ALHd260359, ALHd260376 - ALHd260385 |
Observed in clear skies with seeing around 0.8" |
Observed |
|
68-505 |
2024-04-30 |
00:17 |
SoftToO |
BD332642, 2024gep |
ALHd300096 - ALHd300100, ALHd300106 - ALHd300116 |
Standard star and photometry were successfull, clear sky around 1 arcsec seeing. Seeing got worse during spectroscopy which is why it is set failed. |
Observed |
|
68-505 |
2024-05-02 |
01:00 |
SoftToO |
BD332642, 2024gep, SN2024cld |
ALHe020187 - ALHe020191, ALHe020214 - ALHe0202124, ALHe020234 - ALHe020243 |
Observed in clear skies or thin clouds, seeing around 1.0" for the high target, and 2.0" for the low target.
As requested, the standard was observed in both 1.0" and 1.3" slits, as both were used to observe the targets |
Observed |
|
The above information is collected from the ToO/Mon reports that have been created by the observer.
Should any of the observations have been carried out using the OB system, you will find additional information
HERE
|