====== All about Spectrometer ======
This page is mainly split to Three different section.
  - Common information
  - Single Spectrophotometer (MKII, and MKIV)
  - Double Spectrophotometer (MKIII)

===== Common Information =====
==== Direction of the lens ====
Object should appear tall and thin and concave surface should be facing (Direction of light travel) towards the slits or PMT\\
{{:pictures:correction_lens.png?400|}} \\ Correction Lens 
The correction lens [LE 5] has a convex-cylindrical surface (radius 170.0 mm) and a concave-spherical surface (radius 230.0 mm). 
Both surfaces are coated with a layer of magnesium fluoride to minimize reflectance at 315.0 nm for an incidence angle of 29°. The lens is mounted in the entrance-slit housing at an angle of 29° to the optical axis with the concave-spherical surface facing the entrance slit. The axis of the cylindrical surface is positioned in the horizontal plane to within 1°. 
===== Single Spectrophotometer =====

===== Double Spectrophotometer =====
==== Disassembly ====

To remove the Bulkhead from the spectrometer, there are 4 screws that needs to be removed. *NOTE* Make sure the bulkhead is being held onto before taking all the screws off!\\
{{:pictures:20231122_091909.jpg?400|}} {{:pictures:20231122_111902.jpg?400|}}