Space targets are mainly divided into spacecraft and space debris working in orbit. Important near-Earth objects can be accurately detected and tracked, and their threats to the planet security can be predicted by monitoring their orbit and volume parameters. Optical telescope is one of the most important astronomical telescopes, science-grade image sensors were used to collects optical information about stars. In modern times, with the rapid development of semiconductor technology, CMOS (Complementary Metal Oxide Semiconductor) image sensor has high data transmission rate and high integration, CMOS image sensors have become the main optical imaging image sensors used in astronomical telescopes. In this presentation, the imaging principle and firmware design of a scientific CMOS camera named PX400 are introduced and tested. The PX400 uses a scientific image sensor called GSENSE400BSI (hereinafter referred to as GS400) produced by GPIXEL, which has a high data readout rate and a variety of operating modes.
Earth2.0 is a space telescope mission proposed by Chinese scientists to search for exoplanets. It is scheduled for launch in 2027 and will operate in orbit around the Earth-Sun Lagrange point L2 for a minimum of 4 years. The mission includes six 28cm aperture, 550 square degree transit telescopes and one 35cm aperture, 4 square degree microlensing telescope. The microlensing telescope is aimed at the core area of the Milky Way's arm, and is expected to discover approximately 1,000 cold and wandering planets within four years. Currently, the microlensing telescope is considering using Teledyne e2v's CCD290 as the detector, with a focal plane consisting of a 2*2 detector mosaic. To conduct preliminary technical verification, a CCD290 prototype camera was designed and CCD290 performance characterization tests were carried out. Additionally, specific experiments were conducted to study the impact of space radiationontheCCD290 detector's performance through proton displacement damage irradiation. Following cumulative doses of3.072*10 10 p/cm2 and 6.792*10 10 p/cm2 of 60MeV proton irradiation, dark current, dark current non-uniformity, and charge transfer efficiency tests were performed on the CCD290. The test results indicated that after annealing at room temperature for 4 days and at 50°C for 7 days, the CCD performance showed partial restoration, highlighting the necessity of regular annealing in orbit.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.