iSHELL Design Review Cryostat & Optics Bench. Dan Kokubun 9/11/2013. Overview. Overview. Estimated Weight: 1040 lbs CG: within 2” of optical axis. Helium lines run eastward Hall Effect box placement TBD. Overview. Aladin. Cal Box. Aladin Controller. LN Can. Rotator Mechanism.
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X Disperser Mech
Hall Effect Sens
CCC First Stage Cooled
LN Cooled Bench
CCC Second Stage Cooled
Aladin and H2RG
To achieve an absolute flux calibration of 1%, the cold stop and telescope exit pupil need to remain co-aligned to within 1% of their diameters both while observing the object, and while performing the flux standard star observations. – Instrument Top Level Specification