Abstract
ABSTRACTOrthogonal transfer CCDs (OTCCDs) were developed to compensate for real‐time image motion, essentially providing tip/tilt corrections without additional optics or moving parts. Because of the complex gate structures of OTCCDs, their ability to provide high‐precision photometric observations and their use as high‐speed photometers were unclear. We detail new observations obtained with the OPTIC camera at the University of Hawaii's 2.2 m telescope on Mauna Kea that explore both of these areas. We find that OTCCDs provide equally good results in terms of typical time‐series differential photometry (compared with typical CCDs) and that their high‐speed photometric application is superb. Using point‐spread function–shaping techniques, we obtained time‐series photometric observations with precisions of ≲660 μmag per 180 s integration. Extending this technique to very bright stars, the potential to reach differential precisions near 10-5 per exposure is investigated.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Publications of the Astronomical Society of the Pacific
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
