MIRC/VEGA

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Cophasing of VEGA and MIRC on UT 2010-10-12: (SK)

MIRC ealing mount position after cophasing:

IR1=58350, IR2=65449, IR3=66000, IR4=71600

(Configuration: E1-E2-W2-W1; B1-B2-B3-B4)


Cophasing of VEGA and MIRC on UT 2010-10-13/14: (SK)

For the E1-E2-W2-W1 configuration, the MIRC ealing mount positions were still suitable.

However, when we changed to the S1-S2-W2-W1 configuration and tracked with MIRC, the fringes were somewhat off-centered at VEGA, possibly due to differences in the LDCs of the individual telescopes.


Cophasing of VEGA and MIRC on UT 2011-09-26: (SK)

configuration: W1-W2-S2-E2-E1-S1, VEGA used the first four telescopes, and MIRC used all 6.

Here is the detailed procedure:

start with some bright cal, Hmag < 4, and size ~0.4mas. VEGA needs to do some alignment first, then MIRC can do fiber explorer. Then MIRC take over the control of delat carts to find all fringes just as what we usually do alone. Write down the offsets. Then VEGA will take over the control of delay carts, and find fringes alone, write down the VEGA offsets. Then MIRC take over the control again,

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