The VAO consists of an f/6.8 Cassegrain reflector with a 17-in (0.43-m) primary mirror and Dall-Kirkham correction lens. The observatory is located on the roof of Van Allen Hall (41°, 41’ 12” N, 91° 31’ 55” W; elevation 200 m) on the campus of the University of Iowa in Iowa City and the telescope was installed in August 2014 with funding from the Carver Trust. The telescope is mounted on a PlaneWave Instruments L-500 direct-drive Alt-Az mount. The imaging camera is a SBIG 6303E with a 3K x 2K cooled CCD sensor and a 32’ x 21’ field of view. The available filter set includes L, R, G, and B
System Diagram
Equipment Summary
Component | make, MOdel | Specifications | CONTROL SOFTWARE |
---|---|---|---|
Optical tube assembly | PlaneWave CDK17 | 17-in, 0.43-m, f/6.8 Corrected Dall-Kirkham with dew heaters | |
Mount | PlaneWave L-500 | Direct-drive, Alt-Az | PWI4 |
Dew heater controller | PlaneWave Delta T | Controls primary, secondary mirror heaters | PWI3 |
Focus controller | PlaneWave Electronic Focusing Accessory Kit | EFA automates focusing (focuser-rotator), monitors temperature (dew heater controller), and controls fans | PWI3 |
Focuser-rotator | PlaneWave IRF90 | PWI3 | |
Filter wheel | FLI CFW3-12 | 12-position 50 mm round filters | MaxIm DL |
Filters | Agina Astro, Astrodon | Detection limit: 16-17 mag; Johnson/Bessell UBVRI, LRGB, H-alpha (5 nm) | |
Camera | Diffraction Limited SBIG STXL-6303E | 9 micron pixels in 3072 x 2048 array, 32' x 21.5' FOV, plate scale 0.63"/pix | MaxIm DL |
Dome | Astro Haven Enterprises 18 ft. | Clamshell design | Written by K. Ivarsen |