CHAMP/MIRC Observing Run 2011May

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UT2011May20

UT2011May21

Beams 6 (W2) - 1 (W1)

Observed HD 192985.

image on L1 (both B1, b6) was bad. 40-50% of the flux.

UT2011May22

CHAMP B3(W1)-B4(W2)

Observers: JDM, FB, CF.

Goals:

  • Observe targets under varying SNR conditions to test cophasing and gdt.
  • Test the 3 readout modes (Fast, Normal (12Hz Dither, 120Hz Fringes), Slow (6Hz Dither/60Hz fringes)
  • First YSO observations for CHAMP !!!!


2:47am Aligning on HD 197950 (K=5.1), cal for MWC 361 (HD 200775)

B3 W1 B4 W2

Using Normal mode (500Hz) B3 L3: max 15 cts. Image quality ok, maybe out of focus B3 R4: max 20 cts. Image quality ok, maybe out of focus B4 L4: max 3 cts. VERY VERY FAINT. B4 R4: max 5 counts. also very faint.

3-3:45am Re-aligned CHAMP table using red laser. There seemed to be some issues and it will be interesting to see if we improve the throughput.

B3 L3: 10-15cts. [same as earlier] B3 R4: 20-30cts. [ maybe slightly better] B4 L4: 15-20cts. [much better] B4 R4: 20 cts.

Total cts. ~40 on each L4, R4.

Searching for fringes. B34 offsets 0->6mm Seeing: W1 9cm/W2 3cm

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