
Michael B, Gillian B.M., Alex A., Riccardo G., Lindsey B., Katrin H., Kayla K., Eve K., JD E., Xin L., Andrew H., Isa V., Katie H., Florian K., Xiaofeng D.
Group Photo Spring 2023

Amy Bender helps a visitor get dressed in the "Big Red" south pole parka at the Arognne open House. May 20, 2023
![Sandhill cranes that were frequent visitors to the CPAC group. Image taken in the summer. [Image credit: J. Hollowed]](https://cpac.hep.anl.gov/wp-content/uploads/sites/39/cache/2018/01/sandhillcrane1-scaled/3674870090.jpg)
Sandhill cranes that were frequent visitors to the CPAC group. Image taken in the summer. [Image credit: J. Hollowed]
![One of the sandhill cranes from the previous image. This photo was taken during the autumn; note the color change compared to summer. [Image credit: J. Hollowed]](https://cpac.hep.anl.gov/wp-content/uploads/sites/39/cache/2018/01/sandhillcrane2-scaled/1573574885.jpg)
One of the sandhill cranes from the previous image. This photo was taken during the autumn; note the color change compared to summer. [Image credit: J. Hollowed]

Getting ready to observe South Pole Telescope discovered galaxy clusters at Las Campanas Observatory in Chile. Image credit: L. Bleem

Preparing for another night of observations of SPT clusters! The ESO La Silla Observatory is in the distance. Image credit: L. Bleem

The 6.5 m Magellan/Baade Telescope mirror (with staff member L. Bleem for scale). Photo Credit: M. Bayliss
![Katrin points to LSST DESC Data Challenge 2 simulations running on most of Theta [Image Credit: S. Habib]](https://cpac.hep.anl.gov/wp-content/uploads/sites/39/cache/2018/09/heitmann_lsst_theta_aug_2018-scaled/2509716129.jpg)
Katrin points to LSST DESC Data Challenge 2 simulations running on most of Theta [Image Credit: S. Habib]

CPAC post-lunch, clockwise from bottom left, J.D., Patricia, Malin, Martina, Hillary, Lindsey, Amy L., Nick, Matt, Katrin, Tom, Amy B. (Salman represented by half-eaten apple)