13 May 2015 UT MODS2 Commissioning

Completely overcast at sunset, and it looks like it might rain. Will complete running the modsCalib scripts in ~modseng/modsScripts/modsCalib.
I did some of these on 11 May 2015 UT. The table below gives the table and timestamp.

Observers: BRothberg,OKuhn
OSA: GBechetti
InstSp: ESolheid

Ran imaging calibrations tonight and adjusted exposure times for imflats_mods2.cal. It looks like the VFLAT lamp is much bluer on MODS2. Tables of count levels are below. Settled on a set of lamp levels and exposure times for ugriz for MODS2 and copied final script to ~lbto/MODS2Comm/modsCalib_Workspace/ as imflats_mods.cal. Naively copied same lamp/exptime settings for red only and blue only modes, and tested them (results in table). These (imflats_r_mods2.cal and imflats_b_mods2.cal) are also in ~lbto/MODS2Comm/modsCalib_Workspace.

(note done yet... Based on the fact that the lamp/exptime settings used for dual mode work pretty well for red/blue-only modes, I will edit imflats_b.cal and imflats_r.cal for MODS1, as these still have old settings for MODS1 and do not correspond to the recently edited (Nov 2014) imflats.cal.)

List of Calibration Scripts in ~modseng/modsScripts/modsCalib/ (20150505)

* = done or redone on 20150510
o = done or redone on 20150513

grlamps.cal DONE *
grlamps_b.cal *
grlamps_r.cal *
prlamps_b.cal * (lines in red leak sat... guess that's why we don't use blue-only prism)
prlamps.cal *
prlamps_r.cal *

11:30am started ~lbto/SciPrep/MODS/doBias2
bias1K *
bias8K - *-- blue expdone needed at 11:49am
bias3K *
prbias *

grpixflats.cal DONE * (but problem with b 50-51...)
grpixflats_b.cal * (12:35pm; range 1200-58000 cnts)
grpixflats_r.cal * (1pm)

slitflats.cal
slitflats_b.cal
slitflats_r.cal
slitflat_5as.cal

prflats.cal
prflats_b.cal
prflats_r.cal

imflats.cal o
  • did not use MODS2-specific imflats_mods2.cal script in ~lbto/SciPrep/MODS2/ and resulting images taken with imflats.cal script in ~modseng/modsScripts/modsCalib/ saturated at u and had 45k counts at g. Cntl-c'd so I could start over with MODS2-specific imflats.cal script.
imflats_b.cal
imflats_r.cal

prmosflats.cal
prmoslamps.cal

grmosflats.cal
  • execMODS2 mods.7.StoneLf2.cal
  • just slewed in elevation while b 28 and r 27 were being taken
    • b 28 is first blue image with sequencer error tonight.
grmoslamps.cal

bias3K.cal *
bias8K.cal *
prbias.cal *

Running up MODS1 to check imaging flats calibration times.
  • execMODS ~modseng/modsScripts/modsCalib/imflats.cal
  • execMODS2 ~modseng/modsScripts/modsCalib/imflats_mods2.cal gives the last set of counts.

filter MODS1 vflat MODS1 exptime MODS1 counts MODS2 vflat MODS2 exptime MODS2 counts
u-sdss       10 50 65000
u-sdss 10 50 25000 9 10 9500
g-sdss       4 12 46000
g-sdss 4 12 30000 4 5 20000
r-sdss 3 2 25000 2 5 14500
i-sdss 1.5 7 25000 1.5 3 12500
z-sdss 1.5 3 22000 1 10 10000
             
u-sdss       10 15 23000
g-sdss       4 8 27000
r-sdss       2 10 23000
i-sdss       1.5 7 24000
z-sdss       1.5 3 28000
             
u-sdss       10 20 30000
g-sdss       4 8 27000
r-sdss       3 2 39000
i-sdss       1.5 8 29000
z-sdss       1.5 3 30000
             
r-sdss       3 1.5 27000

Copied edited mods2 imflats.cal script to modseng as imflats_mods2.cal (it differs from the one for MODS1). Attached imflats_mods2.cal

red-only imflats_r_mods2.cal
r-sdss       3 1.5 31000
i-sdss       1.5 8 31000
z-sdss       1.5 3 32000

blue-only imflats_b_mods2.cal
u-sdss       10 20 36000
g-sdss       4 8 29000

MODS1: adjust imflats_r.cal and imflats_b.cal
r-sdss       3 2 17000 dual bc it differs from what I got earlier
r-sdss       3 2 20000 red-only  
g-sdss       4 12 25000 blue-only  
u-sdss       3 2 29000 blue-only  

does vflat need to warm up? level varies by 30%
  • Earlier tonight, I took dual-imaging mode flats at r-sdss and got 23000 cnts (2-6, 17-21) but then I took one at red-only and got 15000 cnts (32 and 34). dual is 33 and also about 15000 cnts only.

-- %USERSIG{OlgaKuhn - 2015-05-13}%

Comments

 
Topic attachments
I Attachment Action Size Date Who Comment
imflats_mods2.calcal imflats_mods2.cal manage 1 K 13 May 2015 - 03:59 OlgaKuhn dual channel imaging flats for MODS2
Topic revision: r1 - 13 May 2015, OlgaKuhn
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