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Title: Dark energy survey operations: years 4 and 5

Abstract

The Dark Energy Survey is a “stage III” dark energy experiment, performing an optical imaging survey to measure cos-mological equation of state parameters using four independent methods. The scope and complexity of the survey, originallyscheduled for 525 nights of observing spread over five years and combining a 5000 degree wide survey with a 10 field weeklytime-domain survey, introduced complex strategic and tactical scheduling problems that needed to be addressed. We beginwith an overview of the process used to develop DES strategy and tactics, from the inception of the project, to task forces thatstudied and developed strategy changes over the course of the survey, to the nightly pre-observing meeting in which imme-diate tactical issues were addressed. We then summarize the strategic choices made for each sub-survey, including metrics,scheduling considerations, choice of time domain fields and their sequences of exposures, and wide survey footprint andpointing layout choices. We go on to describe the detailed process that determined which specific exposures were taken atwhich specific times. We give a chronology of the strategic and tactical peculiarities of each year of observing, including theproposal and execution of a sixth year. We give an overview ofobstac, the implementation of the DES scheduler used to sim-ulatemore » and evaluate strategic and tactical options, and automate exposure scheduling; and describe developments inobstacfor use after DES. Appendices describe further details of data quality evaluation,τ, andteff; airmass calculation; and model-ing of the seeing and sky brightness. The significant corpus of DES data indicates that the simple scaling relations for seeingas a function of wavelength and airmass derived from the Kolmogorov turbulence model work adequately for exposureplanning purposes: deviations from these relations are modest in comparison with short time-scale seeing variations« less

Authors:
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Publication Date:
Research Org.:
Univ. of Chicago, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
OSTI Identifier:
1593984
Grant/Contract Number:  
SC0009924
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Astro Physics
Additional Journal Information:
Journal Name: Astro Physics
Country of Publication:
United States
Language:
English

Citation Formats

Gruendl, Robert A., Tucker, Douglas L., Bocquet, Sebastian, Ferte, Agnes, Friswell, Indiarose, Furnell, Kate E., Khullar, Gourav, Kron, Richard, Kuropatkin, Nikolay, Lasker, James, Manera, Marc, March, Marisa, Medford, Michael, Menanteau, Felipe, Mohammed, Irshad, Monroy, Martin, Moraes, Bruno, Morganson, Eric, Muir, Jessica, Murphy, Martin, Nord, Brian, Pace, Anthony, Palmese, Antonella, Park, Youngsoo, Paz-Chinchon, Francisko, Pereira, Maria E., Petravick, Donald, Plazas, Andres, Poh, Jason, Prochaska, Travis, Sako, Masao, Sauseda, Marcus, Scolnic, Daniel, Secco, Lucas, Sevilla-Noarbe, Ignacio, Shipp, Nora, Smith, John A., Soergel, Bjeorn, Stebbins, Albert, Story, Kyle, Stringer, Katelyn, Tarsitano, Ferderica, Thomas, Benjamin, Vivas, Kathy, Wang, Mei-yu, Weaverdyck, Curtis, Weaverdyck, Noah, wester, William, Wethers, Clare, Wilkenson, Reece, Wu, Hao-Yi, Yanny, Brian, Zenteno, Alfredo, Zhang, Yuanyuan, Diehl, H. Thomas, Neilsen, Eric, Marshall, Jennifer L., DePoy, Darren L., Romer, A. Kathy, Abbott, Timothy M., Soares-Santos, Marcelle, Allam, Sahar, Walker, Alistair R., Kent, Stephen M., Honscheid, Klaus, Roodman, Aaron, Lathrop, Andrew G., Reil, Kevin, Li, Ting S., Elliott, Anne E., Alvarez, Otto, Annis, James, Balbinot, Eduardo, Bhargava, Sunayana, Bechtol, Keith, Bernstein, Gary, Bhatawdekar, Rachana, Brout, Dillon, Capasso, Raffaella, Cawthon, Ross, Chang, Chihway, Cook, Erika, Conselice, Chris, Cruz, Jamie, D'Andrea, Chris, da Costa, Luiz, Das, Rutuparna, Drlica-Wagner, Alex, Everett, Spencer W., Frieman, Josh, Fausti-Neto, Angelo, Gelman, Landon P., Gerdes, David W., Gill, Mandeep S., Goldstein, Daniel A., Gruen, Daniel, Gulledge, Deborah J., Hamilton, Stephanie, Hollowood, Devon, James, David J., Johnson, Michael D., Johnson, Margaret W., Kessler, Richard S., Kovacs, Eve, Kremin, Anthony, Peck, Alison B., Benn, Chris R., and Seaman, Robert L. Dark energy survey operations: years 4 and 5. United States: N. p., 2018. Web. doi:10.1117/12.2312113.
Gruendl, Robert A., Tucker, Douglas L., Bocquet, Sebastian, Ferte, Agnes, Friswell, Indiarose, Furnell, Kate E., Khullar, Gourav, Kron, Richard, Kuropatkin, Nikolay, Lasker, James, Manera, Marc, March, Marisa, Medford, Michael, Menanteau, Felipe, Mohammed, Irshad, Monroy, Martin, Moraes, Bruno, Morganson, Eric, Muir, Jessica, Murphy, Martin, Nord, Brian, Pace, Anthony, Palmese, Antonella, Park, Youngsoo, Paz-Chinchon, Francisko, Pereira, Maria E., Petravick, Donald, Plazas, Andres, Poh, Jason, Prochaska, Travis, Sako, Masao, Sauseda, Marcus, Scolnic, Daniel, Secco, Lucas, Sevilla-Noarbe, Ignacio, Shipp, Nora, Smith, John A., Soergel, Bjeorn, Stebbins, Albert, Story, Kyle, Stringer, Katelyn, Tarsitano, Ferderica, Thomas, Benjamin, Vivas, Kathy, Wang, Mei-yu, Weaverdyck, Curtis, Weaverdyck, Noah, wester, William, Wethers, Clare, Wilkenson, Reece, Wu, Hao-Yi, Yanny, Brian, Zenteno, Alfredo, Zhang, Yuanyuan, Diehl, H. Thomas, Neilsen, Eric, Marshall, Jennifer L., DePoy, Darren L., Romer, A. Kathy, Abbott, Timothy M., Soares-Santos, Marcelle, Allam, Sahar, Walker, Alistair R., Kent, Stephen M., Honscheid, Klaus, Roodman, Aaron, Lathrop, Andrew G., Reil, Kevin, Li, Ting S., Elliott, Anne E., Alvarez, Otto, Annis, James, Balbinot, Eduardo, Bhargava, Sunayana, Bechtol, Keith, Bernstein, Gary, Bhatawdekar, Rachana, Brout, Dillon, Capasso, Raffaella, Cawthon, Ross, Chang, Chihway, Cook, Erika, Conselice, Chris, Cruz, Jamie, D'Andrea, Chris, da Costa, Luiz, Das, Rutuparna, Drlica-Wagner, Alex, Everett, Spencer W., Frieman, Josh, Fausti-Neto, Angelo, Gelman, Landon P., Gerdes, David W., Gill, Mandeep S., Goldstein, Daniel A., Gruen, Daniel, Gulledge, Deborah J., Hamilton, Stephanie, Hollowood, Devon, James, David J., Johnson, Michael D., Johnson, Margaret W., Kessler, Richard S., Kovacs, Eve, Kremin, Anthony, Peck, Alison B., Benn, Chris R., & Seaman, Robert L. Dark energy survey operations: years 4 and 5. United States. doi:10.1117/12.2312113.
Gruendl, Robert A., Tucker, Douglas L., Bocquet, Sebastian, Ferte, Agnes, Friswell, Indiarose, Furnell, Kate E., Khullar, Gourav, Kron, Richard, Kuropatkin, Nikolay, Lasker, James, Manera, Marc, March, Marisa, Medford, Michael, Menanteau, Felipe, Mohammed, Irshad, Monroy, Martin, Moraes, Bruno, Morganson, Eric, Muir, Jessica, Murphy, Martin, Nord, Brian, Pace, Anthony, Palmese, Antonella, Park, Youngsoo, Paz-Chinchon, Francisko, Pereira, Maria E., Petravick, Donald, Plazas, Andres, Poh, Jason, Prochaska, Travis, Sako, Masao, Sauseda, Marcus, Scolnic, Daniel, Secco, Lucas, Sevilla-Noarbe, Ignacio, Shipp, Nora, Smith, John A., Soergel, Bjeorn, Stebbins, Albert, Story, Kyle, Stringer, Katelyn, Tarsitano, Ferderica, Thomas, Benjamin, Vivas, Kathy, Wang, Mei-yu, Weaverdyck, Curtis, Weaverdyck, Noah, wester, William, Wethers, Clare, Wilkenson, Reece, Wu, Hao-Yi, Yanny, Brian, Zenteno, Alfredo, Zhang, Yuanyuan, Diehl, H. Thomas, Neilsen, Eric, Marshall, Jennifer L., DePoy, Darren L., Romer, A. Kathy, Abbott, Timothy M., Soares-Santos, Marcelle, Allam, Sahar, Walker, Alistair R., Kent, Stephen M., Honscheid, Klaus, Roodman, Aaron, Lathrop, Andrew G., Reil, Kevin, Li, Ting S., Elliott, Anne E., Alvarez, Otto, Annis, James, Balbinot, Eduardo, Bhargava, Sunayana, Bechtol, Keith, Bernstein, Gary, Bhatawdekar, Rachana, Brout, Dillon, Capasso, Raffaella, Cawthon, Ross, Chang, Chihway, Cook, Erika, Conselice, Chris, Cruz, Jamie, D'Andrea, Chris, da Costa, Luiz, Das, Rutuparna, Drlica-Wagner, Alex, Everett, Spencer W., Frieman, Josh, Fausti-Neto, Angelo, Gelman, Landon P., Gerdes, David W., Gill, Mandeep S., Goldstein, Daniel A., Gruen, Daniel, Gulledge, Deborah J., Hamilton, Stephanie, Hollowood, Devon, James, David J., Johnson, Michael D., Johnson, Margaret W., Kessler, Richard S., Kovacs, Eve, Kremin, Anthony, Peck, Alison B., Benn, Chris R., and Seaman, Robert L. Tue . "Dark energy survey operations: years 4 and 5". United States. doi:10.1117/12.2312113. https://www.osti.gov/servlets/purl/1593984.
@article{osti_1593984,
title = {Dark energy survey operations: years 4 and 5},
author = {Gruendl, Robert A. and Tucker, Douglas L. and Bocquet, Sebastian and Ferte, Agnes and Friswell, Indiarose and Furnell, Kate E. and Khullar, Gourav and Kron, Richard and Kuropatkin, Nikolay and Lasker, James and Manera, Marc and March, Marisa and Medford, Michael and Menanteau, Felipe and Mohammed, Irshad and Monroy, Martin and Moraes, Bruno and Morganson, Eric and Muir, Jessica and Murphy, Martin and Nord, Brian and Pace, Anthony and Palmese, Antonella and Park, Youngsoo and Paz-Chinchon, Francisko and Pereira, Maria E. and Petravick, Donald and Plazas, Andres and Poh, Jason and Prochaska, Travis and Sako, Masao and Sauseda, Marcus and Scolnic, Daniel and Secco, Lucas and Sevilla-Noarbe, Ignacio and Shipp, Nora and Smith, John A. and Soergel, Bjeorn and Stebbins, Albert and Story, Kyle and Stringer, Katelyn and Tarsitano, Ferderica and Thomas, Benjamin and Vivas, Kathy and Wang, Mei-yu and Weaverdyck, Curtis and Weaverdyck, Noah and wester, William and Wethers, Clare and Wilkenson, Reece and Wu, Hao-Yi and Yanny, Brian and Zenteno, Alfredo and Zhang, Yuanyuan and Diehl, H. Thomas and Neilsen, Eric and Marshall, Jennifer L. and DePoy, Darren L. and Romer, A. Kathy and Abbott, Timothy M. and Soares-Santos, Marcelle and Allam, Sahar and Walker, Alistair R. and Kent, Stephen M. and Honscheid, Klaus and Roodman, Aaron and Lathrop, Andrew G. and Reil, Kevin and Li, Ting S. and Elliott, Anne E. and Alvarez, Otto and Annis, James and Balbinot, Eduardo and Bhargava, Sunayana and Bechtol, Keith and Bernstein, Gary and Bhatawdekar, Rachana and Brout, Dillon and Capasso, Raffaella and Cawthon, Ross and Chang, Chihway and Cook, Erika and Conselice, Chris and Cruz, Jamie and D'Andrea, Chris and da Costa, Luiz and Das, Rutuparna and Drlica-Wagner, Alex and Everett, Spencer W. and Frieman, Josh and Fausti-Neto, Angelo and Gelman, Landon P. and Gerdes, David W. and Gill, Mandeep S. and Goldstein, Daniel A. and Gruen, Daniel and Gulledge, Deborah J. and Hamilton, Stephanie and Hollowood, Devon and James, David J. and Johnson, Michael D. and Johnson, Margaret W. and Kessler, Richard S. and Kovacs, Eve and Kremin, Anthony and Peck, Alison B. and Benn, Chris R. and Seaman, Robert L.},
abstractNote = {The Dark Energy Survey is a “stage III” dark energy experiment, performing an optical imaging survey to measure cos-mological equation of state parameters using four independent methods. The scope and complexity of the survey, originallyscheduled for 525 nights of observing spread over five years and combining a 5000 degree wide survey with a 10 field weeklytime-domain survey, introduced complex strategic and tactical scheduling problems that needed to be addressed. We beginwith an overview of the process used to develop DES strategy and tactics, from the inception of the project, to task forces thatstudied and developed strategy changes over the course of the survey, to the nightly pre-observing meeting in which imme-diate tactical issues were addressed. We then summarize the strategic choices made for each sub-survey, including metrics,scheduling considerations, choice of time domain fields and their sequences of exposures, and wide survey footprint andpointing layout choices. We go on to describe the detailed process that determined which specific exposures were taken atwhich specific times. We give a chronology of the strategic and tactical peculiarities of each year of observing, including theproposal and execution of a sixth year. We give an overview ofobstac, the implementation of the DES scheduler used to sim-ulate and evaluate strategic and tactical options, and automate exposure scheduling; and describe developments inobstacfor use after DES. Appendices describe further details of data quality evaluation,τ, andteff; airmass calculation; and model-ing of the seeing and sky brightness. The significant corpus of DES data indicates that the simple scaling relations for seeingas a function of wavelength and airmass derived from the Kolmogorov turbulence model work adequately for exposureplanning purposes: deviations from these relations are modest in comparison with short time-scale seeing variations},
doi = {10.1117/12.2312113},
journal = {Astro Physics},
number = ,
volume = ,
place = {United States},
year = {2018},
month = {7}
}

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