We are attempting to observw a young stellar object with ProEM on the McDonald 82". Here are some of the ProEM properties.
% cat /home/sco/Jimi/README.jimi
Dracula's Chivito (Class II, A9 YSO, IRAS 23077+6707)
The only ProEM doc I know of:
https://docs.google.com/document/d/1LLg7ABohlfWF3TCUaFNpVRdKJGi9brlw6kLK4DFjf50/edit
Cast of characters
Jimi Lowrey jimilowrey@gmail.com PI
Isaac Lopez idlopez@iastate.edu Aug02-09 observer
Judith Korth judithkorth@googlemail.com Feb9-11 observer
B-G Andersson bgandersson@austin.utexas.edu Ast.Director
Johm Kuehne jkuehne @utexas.edu 82" expert
S. Odewahn sco@utexas.edu staff
Malia Kao mlkao@utmail.utexas.edu
==================================================================================
IRAS 23077+6707
RA 23 09 43 23:09:43.00
Dec +67 23 40 +67:23:40.0
For ZTF query: 23h09m00.00s, +43d00m00.0s Equ J2000 (Sample format line)
23h09m43.00s, +67d23m40.0s Equ J2000
==================================================================================
% ls
README.jimi
% cp /home/sco/Downloads/sci_Files-part1.zip .
% ls
README.jimi sci_Files-part1.zip
% unzip sci_Files-part1.zip
% ls
README sci/ sci_Files-part1.zip
Sat Aug 3 11:07:37 CDT 2024
============================
IRSA Help Desk commented:
A quick check did confirm the problem that you report with the ZTF
cutout. If you request the full image (leave the size blank in the
ZTF online service), imhead reads it okay. We have imhead version
3.9.4, and haven't checked more recent versions yet. There may be
other command-line calls possible in addition to DS9 - we will get
back to you when staff is available to look more deeply.
IRSA Help Desk
I tried taking the :600" out, and pulled 8 images.
% cd sci
% fitsfind_markII .
8 (Number of FITS file found, see fitsfind.out)
% cat fitsfind.out
./2018/0808/427326/ztf_20180808427326_001862_zg_c12_o_q1_sciimg.fits
./2018/0830/427581/ztf_20180830427581_001862_zg_c12_o_q1_sciimg.fits
./2018/0922/266701/ztf_20180922266701_001862_zg_c12_o_q1_sciimg.fits
./2018/0923/290961/ztf_20180923290961_001862_zg_c12_o_q1_sciimg.fits
./2018/0926/268299/ztf_20180926268299_001862_zg_c12_o_q1_sciimg.fits
./2018/0928/363935/ztf_20180928363935_001862_zg_c12_o_q1_sciimg.fits
./2018/0929/369329/ztf_20180929369329_001862_zg_c12_o_q1_sciimg.fits
./2018/1108/331701/ztf_20181108331701_001862_zg_c12_o_q1_sciimg.fits
# Region file format: DS9 version 4.1
global color=green dashlist=8 3 width=1 font="helvetica 10 normal roman" select=1 highlite=1 dash=0 fixed=0 edit=1 move=1 delete=1 include=1 source=1
fk5
circle(23:09:43.0000,+67:23:40.000,10.000") # color=red width=3 font="helvetica 24 normal roman"
To load all images:
% bigds9 fitsfind.out 1 8
Sat Aug 3 15:19:34 CDT 2024
============================
Naother source of images: https://www.legacysurvey.org/
See: https://www.legacysurvey.org/dr9/description/#obtaining-images-and-raw-data
FITS: https://www.legacysurvey.org/viewer/fits-cutout?ra=190.1086&dec=1.2005&layer=ls-dr9&pixscale=0.262&bands=grz
This gives a multi-level FITS image
Name_RC3 RA_2000 DEC_2000 Type Input_name
----------- ----------- ---------- ------ ----------
NGC 4618 12:41:33.00 +41:09:03.0 .SBT9.. n4618
dssget 190.387497 41.150833 10.0 dss poss1_red
RAdeg,DECdeg,l,b: 190.3874969 41.1508331 130.560 75.830
https://www.legacysurvey.org/viewer/fits-cutout?ra=190.3874&dec=41.1508layer=ls-dr9&pixscale=0.262&bands=grz
Gives server error 500
N3664 171.1033325 3.3274999
FITS: https://www.legacysurvey.org/viewer/fits-cutout?ra=171.1033&dec=3.3275&layer=ls-dr9&pixscale=0.262&bands=grz
This works when I put the above URL into my web srver.
To change the image size
FITS: https://www.legacysurvey.org/viewer/fits-cutout?ra=171.1033&dec=3.3275&size=600&layer=ls-dr9&pixscale=0.262
*** This works, but size is in pixels.
So, size=2000 gives a field (on each side) of 2000 pixel * 0.262"/pix = 524 " = 8.7' (on a side)
FITS: https://www.legacysurvey.org/viewer/fits-cutout?ra=171.1033&dec=3.3275&size=2000&layer=ls-dr9&pixscale=0.262
*** Took about two minutes to get this one.
To get inidvidual files I use ds9, view channel I want, and then File > "Save as" > "Slice..."
Sun Aug 4 11:58:53 CDT 2024
============================
Hello Malia:
We've not met, but Don Winget gave me your name as one
of his experts on ProEM. I am an HET resident astronomer,
but I am assisting a friend, Jimi Lowrey, in getting some
ProEM data on Aug9 following Isacc Lopez's run.
I will be observing on the HET that night, but Isacc and
Judith Korth will be at the 82". Jimi and I are really hopoing
that John Kuehne will be there also to provide expertise on
both ProEM and the 82".
I am still gathering photometry for the source we are intersted
in, but I had a few quetions you might know the answers to.
1) Do you have an email address for Isacc? I am trying to
contact him.
2) We'll be using the Gunn gri filters. Do you know how often
flats are taken for ProEM? Once per run? Once per night? Are
domeflats the major resource?
3) Have you any idea of the exposure time need to reach sky
noise domination (in any filter) on the 82" with ProEM?
Sorry for the "email out of the blue". Hope this is not a burden.
Thanks,
Steve Odewahn
Cast of characters
Jimi Lowrey jimilowrey@gmail.com PI
Isaac Lopez no email yet Aug02-09 observer
Judith Korth judithkorth@goodemail.com Feb9-11 observer
B-G Andersson bgandersson@austin.utexas.edu Ast.Director
Johm Kuehne jkuehne @utexas.edu 82" expert
S. Odewahn sco@utexas.edu staff
Malia Kao mlkao@utmail.utexas.edu
Tue Aug 6 09:16:06 CDT 2024
============================
Sample image: /home/sco/Jimi/Sample/2046p5147_r-Frame-001.fits
Note I sento Isaac, John. Don:
-------------------------------------------------------------------------
Hi Isaac:
Thanks for the sample FITS image from ProEM. I have two
immediate question regarding critical header cards:
EXPTIME = '9995 ' / Exposure time
Do you know the units for this exposure time? Usually this
is in seconds, but that does not seem to be the case here.
If I had to guess, this is in thousandths of a second, so this
was a 10 sec exposre?
Also, there are no TCS (telescope control system) cards like
RA,DEC, UT. Any help?
Question to Don (maybe): Who built ProEM? Is there some
source of techhnical info. I thought the header might have
info about stuff like gain, full-well depth, read noise, etc.....
Thanks,
-------------------------------------------------------------------------
Steve
Here are notes mostly about how I pulled over the image files.
Sat Aug 10 15:01:17 CDT 2024 ============================ Note from John: ---------------------------------------------------------------------------- I copied the original data directory to a safe sandbox directory, unpacked the data to FITS files in this directory, including the original SPE files, and then zipped the directory to 20240810.zip. You can sftp/scp 20240810.zip from user jwkuehne@nexus.as.utexas.edu with password Dr@cula'sChivito Let me know if there are any technical difficulties with obtain the zip file. The nexus.as.utexas.edu computer is behind our firewall, but from within the observatory there should be no access restrictions. -John ---------------------------------------------------------------------------- Note from Judith: ---------------------------------------------------------------------------- Good morning, I am very excited about the results from yesterday. The seeing was better at the end of the night. Here is the log. John and I took the bias, flats, and darks in the late afternoon; flats in i (1.995 s) r (5.995 s) and g (4.995 s), darks for 10, 20, and 30 s. We started observing the target around 05:20 UT. We observed the target in three filters (g, i, r) each with 29.995 s exposure time each. The file names are: 1. dracula_g: usefull from frame 21 only, UT 05:33; poor seeing 2. dracula_i: from UT 06:40 3. dracula_r: from UT 08:00 4. dracula_g_2: data useless due to guiding problems. 5. dracula_g_3: from UT 09:15; better seeing than the first attempt. Remember, if you think we need to tweak anything and try again, please let me know. I have ProEM for two more nights. Thanks again! and let me know if you have any questions. Cheers, Judith ---------------------------------------------------------------------------- Now I will try to use "scp" to get the data from John's machiine. % echo $scohome /home/sco Here is the syntax I usually use to get stuff from banzai: % scp -r sco@banzai.as.utexas.edu:/home/banzai/sco/pack /home/sco Here is what I try: % pwd /home/sco/Jimi/ProEM_20240709 % scp -r jwkuehne@nexus.as.utexas.edu:20240810.zip . You can sftp/scp 20240810.zip from user jwkuehne@nexus.as.utexas.edu with password Dr@cula'sChivito Second note from John: ---------------------------------------------------------------------------- From OSX terminal window or Linux terminal window: sftp jwkuehne@nexus.as.utexas.eduget 20240810.zip bye unzip 20240810.zip cd 20240810 ls for example. ---------------------------------------------------------------------------- **** The scp run above took about 5min and then: % pwd /home/sco/Jimi/ProEM_20240709 % ls 20240810.zip* % unzip 20240810.zip % ls 20240810/ 20240810.zip* *** 20240810/ is full of FITS files. The dracula image have spaces in the name string, so I'll have to devise some fix. A typical name: 'dracula_g_3 2024-08-10 09_13_57-Frame-109.fits' So I play a little: May answer to John: ---------------------------------------------------------------------------- Hey John: Thanks. Like all computer users these days, I just tried some shit. Here is what I try: % pwd /home/sco/Jimi/ProEM_20240709 % scp -r jwkuehne@nexus.as.utexas.edu:20240810.zip . At this point, it seems that the zipped file 20240810.zip is indeed coming over to my home machine! It is 35% done. So, I'll unzip it and hopefully I will be ready for the races. Thanks again John and Judith for all the great help and the clear notes. Cheers, Steve ---------------------------------------------------------------------------- Useful examples in mob: remove_lead_blank zp_collect_1
The initial images have some non-standard features that I need to fix up.
% ls -1 /home/sco/Jimi/ProEM_20240709/20240810/*fits* > List.Images
% vi Li*
% cat RE*
Some reduction notes
cd /home/sco/Jimi/Red1
To search for certain images:
ls -1 /home/sco/Jimi/ProEM_20240709/20240810/*fits* > List.Images
NOTE: The images that start with "bias", "dark", and "flat" have
proper names. I refere to these a "BDF" images. However, the
images that start with "dracula" all have names with spaces.
I developed the OTW code proem_rename.sh for treating this.
% pwd
/home/sco/Jimi/Red1/dracula_i
% ls -1 /home/sco/Jimi/ProEM_20240709/20240810/dracula_i*fits*
% cp /home/sco/Jimi/ProEM_20240709/20240810/dracula_i*fits* .
# All of these names have spaces. to fix I do this:
% ls -1 *.fits >list.1
% proem_rename.sh list.1 -m
*** This works, but it fixed header stuff. But I also want to
fix header stuff for the BDF images. So, I need to split
the rename and headfix parts into two different OTW codes.
I will take care of this first!