Scientific objectives
To study the ion-neutral coupling of the F-region plasma to the upper thermosphere by measuring the Doppler shifts and Doppler broadenings of both the OI 630 nm and the OII (O+) 732 nm spectral profiles. A filter wheel driven by the Animatic Smart Motor 23165 provides for wavelength selection of the spectral feature to be observed.

Owner: Center for Solar-Terrestrial Research,
New Jersey Institute of Technology (NJIT)
Contacts John Meriwether and Andrew Gerrard
PI: John Meriwether
Address: 101 Tiernan Hall
323 Martin Luther King Boulevard
CSTR/NJIT, Newark, NJ 07102-1982
USA
E-mail: john.w.meriwether@njit.edu

Instrument specifications
Manufacturer: Clemson University
Name: HODI - Hot Oxygen Doppler Imager
SkyScanner - double axis Smart Motor articulation

Fabry-Perot etalon: 1.4925 cm gap, 120 mm clear aperture, 300 mm focal length, 12 and 11 rings imaged respectively for 630 nm and 732 nm; broad band reflectivity, 78%

Spatial coverage: Multi-directional with 3 degree FOV
Detector: Back Illuminated Andor 934 CCD 1024x1024 pixels
Time resolution: 30 s for 630 nm 120 s for 732 nm
Cooling: -79 deg.; 16 bits resolution
Filter wheel (4 x 5 inch diameter apertures):
[CH1] 630 nm, BP 0.8 nm
[CH2] open
[CH3] 732 nm BP 0.8 nm
[CH4] open