Plot UCoMP filter temperature vs. voltage for a fixed wavelength

[jburkepile]

Create new UCoMP engineering product: filter temperature vs. voltage. To keep the plot simple, we start with a plot of the temperature and voltage of one specific LCVR (LCVR3) for a fixed wavelength (1074.7 nm).

Plot temperature vs voltage for one wavelength (1074.70 nm) over the course of an observing day:

• filter element temperature FITS keyword: T_LCVR3 (in primary header)
• wavelength FITS keyword: WAVELNG = 1074.70 nm (in extension header)
• tuning voltage FITS keyword: V_LCVR3 (in extension header)

Temperatures should be close to 35 degrees C.

Voltages are under 10 volts. Check with Ben to find if these are ever negative.

[bberkeyU]

I believe voltages should range from 0-10V. If we find something outside of this range I will try to review the interpolation code to understand what happend.