UT 20150128 LUCI2 AO Nighttime Commissioning

Observer LUCI-Team: JHeidt, WSeifert, APramskiy
Observer AO-Team: SEsposito, GAgapito, EPinna, APuglisi
Telescope Operator: GBechetti
LBTO Support: TSargent

Plan for the night

On sky:

- Do first closed-loop observations with LUCI2+FLAO on sky
- Start with brightest sources first, close to ROTangle = 205deg
- If successfull, do some offset tests in HeI, FeII and Br_gam
- Evaluate also PSF-variations across FOV

If closed-dome:

- continue NCPA characterisation as function of ROTangle
- Flexure compensation verification N30 camera

Summary

- Closed all night due to humidity

- Tests N30 flexure compensation lookup OK

- Used successfully ARGOS CalUnit fir NCPA tests

- NCPA rotator angle dependence now fully covered

Preparations

- Since this might be the only night on sky during this run the retroreflector has been removed

Details

All times are UT
Files are luci2.20150128.NNNN.fits

00:46 Sunset, mostly clear, T_ambient = 0.4deg, T_mirror = 4.6, low wind, 100% humidity, stay closed

N30 FlexComp Lookup
...28_0001 210deg, z
...28_0002 240deg, z
...28_0003 180deg, z
...28_0004 210deg, z
#0005 180
#0006 150
#0007 180
#0008 210
#0009 240
#0010 210
#0011 210, 80
#0012 210, 70
#0013 210, 60
#0014 210, 90

-> works reasonably with the known hysteresis

04:00 Clouds passing through, humidity still100%

05:30 Put in the ARGOS calibration unit

NCPA Coeffs have to be multiplied by 2 (single pass)
outer rings better defined than with retroreflector
but source seems to be larger than diff limit
-> no, but focus shifted, then all identical to other source!
_0016 diff limited image in FeII filter

NCPA coefficients for additional rotator angles
manual scanning is faster than automatic one
-> now rot angle dependence fully covered

10:00 Clear outside but humidity still 100% => until the end of night

-- %USERSIG{JochenHeidt - 2014-01-28}%
Topic revision: r7 - 28 Jan 2015, JochenHeidt
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