Mr. John J. Piotrowski Profile

John J. Piotrowski

Matt Johns Instrumentation Fellow

SPIE Involvement:

Author

Area of Expertise:

Optics , Lens Design , Instrumentation , Stray Light , Optical Testing

John (Jack) Piotrowski is currently a Matt Johns Instrumentation Fellow at Carnegie Observatories in Pasadena, California. His expertise is on the optical design, analysis, and integration of optical to near-infrared spectrographs for applications in astronomy. He received his PhD in physics from Johns Hopkins University in 2024, working under Dr. Stephen Smee of the Instrument Development Group. During his PhD, his research focused on characterizing the optical properties of digital micromirror devices (DMDs) and their novel applications in optical system design. Beginning in June 2022, he has extended his research to the development of a next-generation multi-object spectrograph for the 6.5m Magellan I - Baade Telescope at the Las Campanas Observatory in Chile working with Dr. Stephen Shectman and Dr. Jeff Crane. As a postdoctoral fellow at Carnegie Observatories, Jack will continue to work on the optomechanical development of FALCON, while also contributing to The Via Project as the optics lead and deputy instrument scientist.

Proceedings Article | 26 August 2024 Poster + Paper

Precision optical alignment and bonding of Volume Phase Holographic (VPH) grisms for SAMOS

Stephen Smee, Robert Barkhouser, John Piotrowski, Massimo Robberto

Proceedings Volume 13100, 131003J (2024) https://doi.org/10.1117/12.3020662

KEYWORDS: Prisms, Epoxies, Optical gratings, Optical alignment, Reticles, Bubbles, Glasses, Photography, Volume holography, Spectrographs

Read Abstract +

Proceedings Article | 23 August 2024 Presentation + Paper

SIRMOS: NIR spectroscopy of 131,000,000 galaxies over 1 < z < 4 and R~1300

Robert Content, Yun Wang, Massimo Robberto, Lee Armus, Florian Beutler, Micol Bolzonella, Samuel Brieden, Jarle Brinchmann, Emanuele Daddi, Mark Dickinson, Andreas Faisst, Lynne Hillenbrand, Cullan Howlett, Jeyhan Kartaltepe, Dana Koeppe, Jon Lawrence, Simona Mei, Eva-Maria Mueller, Seshadri Nadathur, Zoran Ninkov, Ken Osato, Casey Papovich, Will Percival, John Piotrowski, Lucia Pozzetti, Alvise Raccanelli, Jason Rhodes, Shun Saito, Stephen Smee, Dmitry Vorobiev, Michael Zemcov

Proceedings Volume 13092, 130920Z (2024) https://doi.org/10.1117/12.3017865

KEYWORDS: Digital micromirror devices, Design, Spectrographs, Micromirrors, Galactic astronomy, Spectroscopy, Imaging systems, Telescopes, Mirrors, Physics, Cosmology

Read Abstract +

Proceedings Article | 18 July 2024 Poster + Paper

Investigating the polarimetric capabilities for the Giant Magellan Telescope

Hill Tailor, Ramya Anche, G. Grant Williams, John Piotrowski, Daewook Kim

Proceedings Volume 13096, 1309648 (2024) https://doi.org/10.1117/12.3020667

KEYWORDS: Polarimetry, Telescopes, Equipment, Image quality, Polarization, Design, Cameras, Lenses, Prisms, Optical design

Read Abstract +

Proceedings Article | 18 July 2024 Poster + Paper

Optical design of FALCON: a wide-field spectrograph and imager for the Magellan Baade 6.5-meter telescope

John Piotrowski, Stephen Shectman, Jeffrey Crane

Proceedings Volume 13096, 1309694 (2024) https://doi.org/10.1117/12.3020832

KEYWORDS: Cameras, Spectrographs, Design, Equipment, Optical design, Collimators, Telescopes, Imaging systems, Imaging spectroscopy, Astronomy

Read Abstract +

Proceedings Article | 18 July 2024 Poster + Paper

In-situ evaluation of DMD contrast ratio using SAMOS: a DMD-based multi-object spectrograph and imager

John Piotrowski, Stephen Smee, Stephen Hope, Massimo Robberto

Proceedings Volume 13096, 13096AA (2024) https://doi.org/10.1117/12.3020820

KEYWORDS: Digital micromirror devices, Micromirrors, Spectrographs, Equipment, Telescopes, Astronomical imaging, Device simulation, Spectroscopy, Finite-difference time-domain method

Read Abstract +

Proceedings Article | 18 July 2024 Presentation + Paper

On-sky performance of SAMOS: a DMD-based multiobject spectrograph and imager for the SOAR 4.1 meter telescope

John Piotrowski, Massimo Robberto, Stephen Smee, Robert Barkhouser, Megan Donahue, Mario Gennaro, Albert Harding, Stephen Hope, Dana Koeppe, Zoran Ninkov, Jeffrey Poston, Lyle Schwartz, Andrei Tokovinin

Proceedings Volume 13096, 130960S (2024) https://doi.org/10.1117/12.3020796

KEYWORDS: Equipment, Digital micromirror devices, Spectrographs, Spectral resolution, Telescopes, Imaging systems, Point spread functions, Micromirrors, Astronomical imaging

Read Abstract +

Proceedings Article | 15 March 2023 Presentation + Paper

Optical simulation of device efficiency and contrast ratio for a digital micromirror device

John Piotrowski, Dmitry Vorobiev, Stephen Smee

Proceedings Volume 12435, 124350B (2023) https://doi.org/10.1117/12.2650595

KEYWORDS: Micromirrors, Digital micromirror devices, Point spread functions, Near field optics, Spectrographs, Solid modeling, Reflection, Optical simulations

Read Abstract +

Proceedings Article | 29 August 2022 Poster + Paper

Simulation of a digital micromirror device to characterize optical performance in SAMOS: a DMD-based spectrograph

John Piotrowski, Dmitry Vorobiev, Massimo Robberto, Stephen Smee

Proceedings Volume 12182, 121823J (2022) https://doi.org/10.1117/12.2630651

KEYWORDS: Digital micromirror devices, Micromirrors, Spectrographs, Point spread functions, Astronomical imaging, Near field optics, Mirrors, Finite-difference time-domain method, Telescopes, Imaging spectroscopy

Read Abstract +

Proceedings Article | 29 August 2022 Poster + Paper

Stray light analysis of SAMOS: a DMD-based multiple object spectrograph and imager

John Piotrowski, Robert Barkhouser, Stephen Smee, Al Harding, Dmitry Vorobiev, Massimo Robberto

Proceedings Volume 12182, 121823I (2022) https://doi.org/10.1117/12.2630618

KEYWORDS: Digital micromirror devices, Stray light, Stray light analysis, Spectrographs, Ray tracing, Finite-difference time-domain method, Micromirrors, Surface finishing, Zemax, Telescopes

Read Abstract +

Proceedings Article | 2 March 2022 Presentation + Paper

Optical diffraction simulation of a digital micromirror device

John Piotrowski, Dmitry Vorobiev, Massimo Robberto, Stephen Smee

Proceedings Volume 12014, 1201409 (2022) https://doi.org/10.1117/12.2608767

KEYWORDS: Digital micromirror devices, Micromirrors, Diffraction, Mirrors, Near field optics, Point spread functions, Optical simulations, Spectrometers, Spectrographs, Reflectivity

Read Abstract +

Proceedings Article | 13 December 2020 Paper

Status update of LLAMAS: a wide field-of-view visible passband IFU for the 6.5m Magellan telescopes

Gabor Furesz, Robert Simcoe, Mark Egan, Andrew Malonis, Rebecca Masterson, Joshua Brown, Gregory Cappiello, Christian Chesbrough, Kristin Clark, David Coppeta, Danielle Frostig, Michelle Gabutti, Samuel Halverson, Erik Hinrichsen, Sabrina Kahn, Madeline Lambert, Nathan Lourie, John Piotrowski, Christopher Semisch

Proceedings Volume 11447, 114470A (2020) https://doi.org/10.1117/12.2562803

KEYWORDS: Spectrographs, Telescopes, Visible radiation, Optical fibers, Cameras, Solids, Microlens array, Spatial resolution, Photons, Imaging systems

Read Abstract +

Proceedings Article | 13 December 2020 Paper

Stray light analysis and reduction for IFU spectrograph LLAMAS

Danielle Frostig, John Piotrowski, Kristin Clark, David Coppeta, Mark Egan, Gábor Fűrész, Michelle Gabutti, Rebecca Masterson, Andrew Malonis, Robert Simcoe

Proceedings Volume 11447, 114476E (2020) https://doi.org/10.1117/12.2562999

KEYWORDS: Spectrographs, Stray light analysis, Stray light, Telescopes, Solids, Microlens array, Signal to noise ratio, Sensors, Light scattering, Light

Read Abstract +

SPIE Journal Paper | 31 July 2020

Neural networks for faster optical alignment

Keith Hinrichs, John Piotrowski

OE, Vol. 59, Issue 07, 074107, (July 2020) https://doi.org/10.1117/12.10.1117/1.OE.59.7.074107

KEYWORDS: Neural networks, Optical alignment, Wavefronts, Systems modeling, Telescopes, Optical networks, Data modeling, Optical engineering, Device simulation

Read Abstract +

Proceedings Article | 9 September 2019 Presentation + Paper

Comparing optical design complexity of high zoom ratio lenses within the VIS, SWIR, and LWIR

Jake Rosvold, Luis Alemán Castañeda, Jaren Ashcraft, Dylan Beckman, Maximillian Bruggeman, Pellegrino Conte, Shenghan Gao, Qi Jin, Nicholas Kochan, Zilong Li, Yuxuan Liu, Matthew Page, John Piotrowski, Jordan Rabinowitz, Colleen Stone, Julie Bentley

Proceedings Volume 11106, 111060B (2019) https://doi.org/10.1117/12.2528875

KEYWORDS: Zoom lenses, Short wave infrared radiation, Long wavelength infrared, Optical design, Lenses, Tolerancing, Chemical elements, Modulation transfer functions, Aspheric lenses, Lens design

Read Abstract +

Showing 5 of 14 publications

Course Instructor

NON-SPIE: PhD Student

Physics PhD student at The Johns Hopkins University performing research within the field of astronomical instrumentation.

Expand Description +

Keywords/Phrases

Search In:

Publication Years