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@arXiv_astrophIM_bot@mastoxiv.page
2025-06-06 07:28:54

The making of robust and highly performing imaging spectropolarimeters for large solar telescopes
G. B. Scharmer, J. de la Cruz Rodr\'iguez, J. Leenaarts, B. Lindberg, P. S\"utterlin, T. Hillberg, C. Pietraszewski, A. G. de Wijn, M. Foster, J. Storey
https://arxiv.org/abs/2506.05143…

The making of robust and highly performing imaging spectropolarimeters for large solar telescopes
We discuss the requirements, concepts, simulations, implementation, and calibration of two dual Fabry-Perot based imaging spectropolarimeters, CRISP and CHROMIS, at the Swedish 1-meter Solar Telescope, and CRISP2 that is under construction. These instruments use a combination of a high-resolution and a low-resolution etalon together with an order-sorting prefilter to define the bandpass. The overall design is made robust and stable by tailoring the low-resolution etalon reflectivity to accommod…

@deprogrammaticaipsum@mas.to
2025-05-04 12:35:59

"Twelve years after “As We May Think”, and simultaneous with the developments of the IBM 1401 and FORTRAN, copies of “Datamation” started popping up on selected newsstands. This magazine was the godfather of all programming magazines, and held its crown for 41 years (quite a few ages in computer time!), until being phased out as an online magazine in February 1998."

As We May Never Think Again
In 2010, a popular Argentine novelist, screenwriter, and blogger based in Spain called Hernán Casciari, got tired of dealing with publishing houses, editors, and mainstream media. He wanted to publish a magazine, but of a different kind. His idea of a magazine had very-well defined boundaries: high-quality content, no advertising, direct sales to the readers, and a luxury printed format. Against all odds, his idea worked: "Revista Orsai", kicked off as an experiment, and then became a staple a…

@arXiv_astrophGA_bot@mastoxiv.page
2025-06-04 07:48:58

Euclid: Early Release Observations -- The surface brightness and colour profiles of the far outskirts of galaxies in the Perseus cluster
M. Mondelin, F. Bournaud, J. -C. Cuillandre, S. Codis, C. Stone, M. Bolzonella, J. G. Sorce, M. Kluge, N. A. Hatch, F. R. Marleau, M. Schirmer, H. Bouy, F. Buitrago, C. Tortora, L. Quilley, K. George, M. Baes, T. Saifollahi, P. M. Sanchez-Alarcon, J. H. Knapen, N. Aghanim, A. Amara, S. Andreon, C. Baccigalupi, A. Balestra, S. Bardelli, P. Battaglia, A…

Euclid: Early Release Observations -- The surface brightness and colour profiles of the far outskirts of galaxies in the Perseus cluster
The Perseus field captured by Euclid as part of its Early Release Observations provides a unique opportunity to study cluster environment ranging from outskirts to dense regions. Leveraging unprecedented optical and near-infrared depths, we investigate the stellar structure of massive disc galaxies in this field. This study focuses on outer disc profiles, including simple exponential (Type I), down- (Type II) and up-bending break (Type III) profiles, and their associated colour gradients, to tr…

@arXiv_astrophIM_bot@mastoxiv.page
2025-06-04 07:46:17

Performance of the image persistence model for Euclid infrared detectors
B. Kubik, R. Barbier, G. Smadja, S. Ferriol, Y. Conseil, Y. Copin, W. Gillard, S. Dusini, K. Jahnke, E. Prieto, N. Auricchio, E. Balbi, A. Balestra, P. Battaglia, V. Capobianco, R. Chary, L. Corcione, F. Cogato, G. Delucchi, E. Franceschi, L. Gabarra, F. Gianotti, F. Grupp, E. Lentini, S. Ligori, E. Medinaceli, G. Morgante, K. Paterson, E. Romelli, L. Sauniere, M. Schirmer, C. Sirignano G. Testera, M. Trifoglio, A. Troja, L. Valenziano, M. Frailis, M. Scodeggio, J. -C. Barriere, M. Berthe, C. Bodendorf, A. Caillat, M. Carle, R. Casas, H. Cho, A. Costille, F. Ducret, B. Garilli, W. Holmes, F. Hormuth, A. Hornstrup, M. Jhabvala, R. Kohley, D. Le Mignant, P. B. Lilje, I. Lloro, C. Padilla, G. Polenta, J. -C. Salvignol, G. Seidel, B. Serra, A. Secroun, L. Stanco, R. Toledo-Moreo, S. Anselmi, E. Borsato, L. Caillat, C. Colodro-Conde, V. Conforti, J. E. Davies, A. Renzi, F. Dal Corso, S. Davini, A. Derosa, J. J. Diaz, S. Di Domizio, D. Di Ferdinando, R. Farinelli, A. G. Ferrari, F. Fornari, F. Giacomini, O. Krause, F. Laudisio, J. Macias-Perez, J. Marpaud, N. Mauri, R. da Silva, M. Niclas, F. Passalacqua, I. Risso, P. Lagier, A. N. Sorensen, P. Stassi, J. Steinwagner, M. Tenti, C. Thizy, S. Tosi, R. Travaglini, O. Tubio, C. Valieri, S. Ventura, C. Vescovi, J. Zoubian
#toXiv_bot_toot

@albatrossity@lor.sh
2025-03-29 12:24:52

Bird of the Day — Horned Screamer, Brazil 2010
#Birds #NaturePhotography #Nature #Wildlife

Portrait of a bird with a large hooked beak, black head speckled with white, yellow-orange eye, and a single long spiky white protrusion from the forehead

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