ISUAL Sprite Imager Mechanical Robert Besuner NCKU UCB

ISUAL Sprite Imager Mechanical Robert Besuner NCKU UCB Tohoku CDR July, 2001 Imager Mechanical R. Besuner

Imager Mechanical Requirements/Features • Filter Wheel – Select from one of six filters, stepper motor drive – “Find Home” feature w/ integral number of steps between filters – Heated radiantly: T estimated ~40º C with 5 W heating • Lens back-focal-distance held fixed in a sub-assembly • CCD – Radiation shielded by 9. 5 mm Cu – Cooled using Thermoelectric Cooler/Heat Pipe. “Roof” used as heat sink. T estimated ~ 30º - 40º C with 5 W electrical into TEC • Optical Alignment Cube visible from 3 axes • Daylight Sensor integrated w/ filter wheel housing • Modular Design – Facilitates assembly, testing and troubleshooting • External parts have stepped or baffled joints to minimize light leakage. NCKU UCB Tohoku CDR July, 2001 Imager Mechanical R. Besuner 2

Imager Lens-CCD Assembly NCKU UCB Tohoku CDR July, 2001 Imager Mechanical R. Besuner 3

Imager Shell Assembly NCKU UCB Tohoku CDR July, 2001 Imager Mechanical R. Besuner 4

Imager Box Assembly NCKU UCB Tohoku CDR July, 2001 Imager Mechanical R. Besuner 5

Imager Box/FEC Assembly NCKU UCB Tohoku CDR July, 2001 Imager Mechanical R. Besuner 6

Imager Filter Wheel Assembly NCKU UCB Tohoku CDR July, 2001 Imager Mechanical R. Besuner 7

Imager Wheel Housing Rear Assembly NCKU UCB Tohoku CDR July, 2001 Imager Mechanical R. Besuner 8

Imager Wheel Housing Front Assembly NCKU UCB Tohoku CDR July, 2001 Imager Mechanical R. Besuner 9

Imager Filter Wheel/Housing Assembly NCKU UCB Tohoku CDR July, 2001 Imager Mechanical R. Besuner 10

Imager Assembly NCKU UCB Tohoku CDR July, 2001 Imager Mechanical R. Besuner 11

Imager Mechanical Development Status • Mechanical Layout is complete. • All part and assembly drawings are complete. • All parts (for both Flight and ETU) are currently being fabricated. NCKU UCB Tohoku CDR July, 2001 Imager Mechanical R. Besuner 12