Ground-based and Airborne Instrumentation for Astronomy VIII最新文献

{"title":"The South Africa Near-Infrared Doppler (SAND) instrument: concept and instrument design","authors":"A. Takahashi, T. Kotani, J. Nishikawa, A. Ueda, M. Kuzuhara, M. Tamura, T. Nagayama, M. Kurita, T. Sumi, T. Yamamuro, B. Sato, T. Hirano, M. Omiya","doi":"10.1117/12.2560342","DOIUrl":"https://doi.org/10.1117/12.2560342","url":null,"abstract":"","PeriodicalId":215000,"journal":{"name":"Ground-based and Airborne Instrumentation for Astronomy VIII","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130318594","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The NEID port adapter at WIYN: tip-tilt control and vibration analysis","authors":"W. McBride, J. Rajagopal, J. Percival, E. Timmermann, S. Logsdon, M. Wolf, M. Everett, Q. Gong, Eli Golub, E. Hunting, K. Jaehnig, J. Klusmeyer, Dan Li, M. Liang, Wilson M. Liu, S. Mahadevan, M. McElwain, S. Ridgway, H. Schweiker, Michael P. Smith, Jesus Valdenebro, F. Santoro, C. Schwab","doi":"10.1117/12.2561777","DOIUrl":"https://doi.org/10.1117/12.2561777","url":null,"abstract":"The NEID extreme precision radial velocity spectrometer is being commissioned at the WIYN 3.5 meter telescope, Kitt Peak National Observatory, Tucson Arizona. In order to meet the stringent 27 cm per second radial velocity precision, the light to NEID comes from an extremely stable fiber feed, called the NEID Port Adapter, equipped with fast tip-tilt correction. The WIYN telescope vibration environment and the Port Adapter tip-tilt and guiding system are key to achieving the 50 milliarcsecond-level centroiding stability required. Here we describe the servo system performance, along with vibration analysis and mitigation plans. This work would be relevant to upgrade and retrofit efforts as older observatories incorporate low-order wavefront correction to stabilize light to advanced spectrometers and imagers.","PeriodicalId":215000,"journal":{"name":"Ground-based and Airborne Instrumentation for Astronomy VIII","volume":"2013 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128222013","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A coronagraph using a digital micromirror device as an adaptive occultation mask: design and observational result","authors":"M. Kagitani, T. Sakanoi, Y. Kasaba, S. Okano","doi":"10.1117/12.2561906","DOIUrl":"https://doi.org/10.1117/12.2561906","url":null,"abstract":"","PeriodicalId":215000,"journal":{"name":"Ground-based and Airborne Instrumentation for Astronomy VIII","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125705080","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Sunrise Chromospheric Infrared spectroPolarimeter (SCIP) for SUNRISE-3: Opto-mechanical analysis and design","authors":"F. Uraguchi, T. Tsuzuki, Y. Katsukawa, H. Hara, S. Iwamura, M. Kubo, Y. Nodomi, Y. Suematsu, Y. Kawabata, T. Shimizu, A. Gandorfer, J. C. D. T. Iniesta","doi":"10.1117/12.2561812","DOIUrl":"https://doi.org/10.1117/12.2561812","url":null,"abstract":"The Sunrise Chromospheric Infrared spectroPolarimeter (SCIP) is a near-IR spectro-polarimeter instrument newly designed for Sunrise III, a balloon-borne solar observatory with a 1-m diameter telescope. In order to achieve the strict requirements the SCIP wavefront error, it is necessary to quantify the errors due to environmen- tal effects such as gravity and temperature variation under the observation conditions. We therefore conducted an integrated opto-mechanical analysis incorporating mechanical and thermal disturbances into a finite element model of the entire SCIP structure to acquire the nodal displacements of each optical element, then fed them back to the optical analysis software in the form of rigid body motion and surface deformation fitted by polynomials. This method allowed us to determine the error factors having a significant influence on optical performance. For example, no significant wavefront degradation was associated with the structural mountings because the optical element mounts were well designed based on quasi-kinematic constraints. In contrast, we found that the main factor affecting wavefront degradation was the rigid body motions of the optical elements, which must be mini- mized within the allowable level. Based on these results, we constructed the optical bench using a sandwich panel as the optical bench consisting of an aluminum-honeycomb core and carbon fiber reinforced plastic skins with a high stiffness and low coefficient of thermal expansion. We then confirmed that the new opto-mechanical model achieved the wavefront error requirement. In this paper, we report the details of this integrated opto-mechanical analysis, including the wavefront error budgeting and the design of the opto-mechanics.","PeriodicalId":215000,"journal":{"name":"Ground-based and Airborne Instrumentation for Astronomy VIII","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129478108","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Stray light analysis and reduction for IFU spectrograph LLAMAS","authors":"Danielle Frostig, J. Piotrowski, Kristin E. Clark, D. Coppeta, M. Egan, G. Fűrész, Michelle Gabutti, R. Masterson, A. Malonis, R. Simcoe","doi":"10.1117/12.2562999","DOIUrl":"https://doi.org/10.1117/12.2562999","url":null,"abstract":"The Large Lenslet Array Magellan Spectrograph (LLAMAS) is an Integral Field Unit (IFU) spectrograph under construction as a facility instrument for the 6.5-meter Magellan Telescopes. For each pointing, LLAMAS delivers 2400 optical spectra (λ =350-970nm) over a 37”x37” celestial solid angle with a resolution of 2000 through a densely packed microlens+fiber array and replicated low-cost spectrographs. One of our main science goals is to study circumgalactic gas through Lyα emission. To achieve the required signal-to-noise ratio for these observations, LLAMAS must minimize stray light reaching the detector: diffuse scattered light must stay below 0.25% of sky flux and ghost images must not exceed 0.1% of the source signal. We present a non-sequential ray tracing analysis of a simplified LLAMAS model using Photon Engineering’s FRED Optical Engineering Software. We focus on stray light resulting from the volume phase holographic grating and from focal ratio degradation of the fibers. The analysis feeds into a discussion of the design and fabrication of baffles to mask the primary sources of stray light. Additionally, we develop a backup system of mounting rings inside of the cameras where pre-made baffles can be quickly added as needed. Finally, we report on the laboratory performance of a 2-camera LLAMAS prototype featuring the aforementioned stray light interventions.","PeriodicalId":215000,"journal":{"name":"Ground-based and Airborne Instrumentation for Astronomy VIII","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131787545","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Conceptual design of a high-resolution ultra-stable spectrograph for the GTC","authors":"Kai Zhang, Jian-rong Shi, Yongtian Zhu, Liang Wang, Dong Xiao, Huiqi Ye, Lei Wang, Zhanghua Wu, Chen Liu, Zhibo Hao, Huatao Zhang, Qiqige Xin, Jian Han, Zhen Tang, Yujuan Liu, Hong-liang Yan, Haining Li, R. Corradi, C. Prieto, J. López, J. González-Hernández","doi":"10.1117/12.2561632","DOIUrl":"https://doi.org/10.1117/12.2561632","url":null,"abstract":"\"A joint project has been proposed by the Chinese and Spanish astronomy communities, to develop a high-resolution, ultra- stable spectrograph for the Gran Telescopio Canarias (GTC) at La Palma. Being expected to conduct precise radial velocity (PRV) measurement with extreme precision of up to 10 cm s−1, the instrument would promote the very high, present interest in the astronomical community to detect and characterize exoplanets. The project successfully passed the conceptual design review (CoDR) in 2019. The instrument is composed of a near-UV band spectrograph (UVS) and a visible band spectrograph (VIS). They provide a spectral resolving power of R ≥100,000 in the visible band (420 nm – 780 nm), and R≥25,000 in the UV band (310 nm – 420 nm). The VIS subsystem will be enclosed in an ultra-stable environment in the Coude room for the stellar precise radial velocity (PRV) measurements. T he UVS subsystem will be located near the Nasmyth focus to improve the total throughput at the wavelength shorter than 400 nm, to ensure various additional science cases ranging from stellar evolution to the measurement of fundamental constants. This paper gives an overview of the project background, science cases, and technical considerations during the conceptual design phase.\"","PeriodicalId":215000,"journal":{"name":"Ground-based and Airborne Instrumentation for Astronomy VIII","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133773745","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"MAVIS: science case, imager, and spectrograph","authors":"S. Ellis, R. McDermid, G. Cresci, C. Schwab, F. Rigaut, Timothy Chin, A. Horton, Mahesh Mohanan, H. Mcgregor, J. Pember, D. Robertson, L. Waller, R. Zhelem, S. Monty, T. Mendel, M. Aliverti, G. Agapito, S. Antoniucci, A. Balestra, A. Baruffolo, M. Bergomi, A. Bianco, M. Bonaglia, Guiseppe Bono, J. Bouret, D. Brodrick, L. Busoni, E. Carolo, S. Chinellato, Jesse Cranney, G. D. Silva, S. Esposito, D. Fantinel, J. Farinato, T. Fusco, G. Gausachs, J. Gilbert, D. Gratadour, Davide Gerggio, M. Gullieuszik, P. Haguenauer, D. Haynes, V. Korkiakoski, D. Magrin, L. Magrini, L. Marafatto, B. Neichel, F. Pedichini, E. Pinna, C. Plantet, E. Portaluri, K. Santhakumari, R. Ragazzoni, Bernado Salasnich, S. Ströbele, E. Thorn, A. Vaccarella, D. Vassallo, V. Viotto, F. Zamkotsian, A. Zanutta, Hao Zhang","doi":"10.1117/12.2561930","DOIUrl":"https://doi.org/10.1117/12.2561930","url":null,"abstract":"The MCAO Assisted Visible Imager and Spectrograph (MAVIS) is a facility-grade visible MCAO instrument, currently under development for the Adaptive Optics Facility at the VLT. The adaptive optics system will feed both an imager and an integral field spectrograph, with unprecedented sky coverage of 50% at the Galactic Pole. The imager will deliver diffraction-limited image quality in the V band, cover a 30 (cid:48)(cid:48) × 30 (cid:48)(cid:48) field of view, with imaging from U to z bands. The conceptual design for the spectrograph has a selectable field-of-view of 2 . 5 (cid:48)(cid:48) × 3 . 6 (cid:48)(cid:48) , or 5 (cid:48)(cid:48) × 7 . 2 (cid:48)(cid:48) , with a spatial sampling of 25 or 50 mas respectively. It will deliver a spectral resolving power of R=5,000 to R=15,000, covering a wavelength range from 380 - 950 nm. The combined angular resolution and sensitivity of MAVIS fill a unique parameter space at optical wavelengths, that is highly complementary to that of future next-generation facilities like JWST and ELTs, optimised for infrared wavelengths. MAVIS will facilitate a broad range of science, including monitoring solar system bodies in support of space missions; resolving protoplanetary- and accretion-disk mechanisms around stars; combining radial velocities and proper motions to detect intermediate-mass black holes; characterising resolved stellar populations in galaxies beyond the local group; resolving galaxies spectrally and spatially on parsec scales out to 50 Mpc; tracing the role of star clusters across cosmic time; and characterising the first globular clusters in formation via gravitational lensing. We describe the science cases and the concept designs for the imager and","PeriodicalId":215000,"journal":{"name":"Ground-based and Airborne Instrumentation for Astronomy VIII","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129327203","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Test results of the SDSS-V fiber micro-positioners","authors":"Loïc Grossen, L. Kronig, Ricardo Araújo, Stefane Caseiro, C. Sayres, J. Sánchez-Gallego, M. Bouri, J. Kneib","doi":"10.1117/12.2562545","DOIUrl":"https://doi.org/10.1117/12.2562545","url":null,"abstract":"This paper will focus on the testing, validation and performance of the ongoing SDSS-V fiber positioners production. The tested critical parameters include positioning accuracy calibration and validation, fiber misalignment control as well as lifetime test and thermal reliability check over the large temperature scale encountered in the telescopes. The presented results give a good overview on the general design performance and on the general reliability the complete robotic positioning system will achieve.","PeriodicalId":215000,"journal":{"name":"Ground-based and Airborne Instrumentation for Astronomy VIII","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124937407","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Bifrost: an ultra-low-cost cross-dispersed optical echelle spectrograph","authors":"A. Townsend, S. Eikenberry, Nicholas A Barth, R. Stelter, S. Jeram","doi":"10.1117/12.2576278","DOIUrl":"https://doi.org/10.1117/12.2576278","url":null,"abstract":"For on the order of a thousand dollars, we designed and built a high-resolution (R~19,000) optical spectrograph covering 400-950nm, designed to observe bright targets with small telescopes. Innovative 3D printing methods allow us to accurately and cheaply mount and house inexpensive commercial-off-the-shelf (COTS) optical components, including a DSLR camera lens. Bifrost is a fiber-fed spectrograph compatible with our existing and similarly inexpensive 3D-printed acquisition/guide system (compatible with a number of small telescopes, including the Meade LX200 series). A high resolution spectrograph with broadband coverage on a small telescope is optimal for cadence-sensitive spectroscopic variables; our targets of interest include high-mass X-ray binaries, ultra-magnetic stars, and the jets of the microquasar SS 433.","PeriodicalId":215000,"journal":{"name":"Ground-based and Airborne Instrumentation for Astronomy VIII","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129624460","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"HARMONI - first light spectroscopy for the ELT: novel techniques for the calibration of non-common path aberrations","authors":"Álvaro Menduiña-Fernández, M. Tecza, N. Thatte","doi":"10.1117/12.2560994","DOIUrl":"https://doi.org/10.1117/12.2560994","url":null,"abstract":"HARMONI is the first-light visible and near-IR integral field spectrograph for the E-ELT. Non-Common Path Aberrations between the Adaptive Optics channel and the science path are the main limitation for direct imaging of exoplanets. The next generation of Extremely Large Telescopes will require advanced techniques for NCPA calibration to exploit their full capabilities and open up a new era of exoplanet discoveries. Calibrating these aberrations with conventional techniques like Phase Diversity can become problematic when the instrument contains an image slicer (such as HARMONI and PCS for the E-ELT). In this context, we have characterised the impact of image slicers on the PSF, and developed an alternative approach to NCPA calibration based on Machine Learning, which can discriminate between intrinsic slicer effects and aberrations features in the PSF.","PeriodicalId":215000,"journal":{"name":"Ground-based and Airborne Instrumentation for Astronomy VIII","volume":"477 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127556228","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}