Mike Walmsley, L. Quilley, Karen L. Masters, Sandor Kruk, K. A. Remmelgas, Jürgen Popp, E. Romelli, David O’Ryan, H. J. Dickinson, Chris Lintott, S. Serjeant, Rebecca Smethurst, Brooke Simmons, Jason Shingirai Makechemu, Izzy L. Garland, H. L. Roberts, Kameswara Bharadwaj Mantha, L. Fortson, Tobias Géron, William C. Keel, E. M. Baeten, C. Macmillan, Jo Bovy, Santiago Casas, C. De Leo, H. Domínguez Sánchez, J. Katona, J. H. Knapen, András Kovács, N. Aghanim, B. Altieri, A. Amara, S. Andreon, N. Auricchio, H. Aussel, C. Baccigalupi, Marco Baldi, A. Balestra, S. Bardelli, A. Basset, P Battaglia, R. Bender, A. Biviano, Andrea Bonchi, E. Branchini, M. Brescia, J. Brinchmann, S. Camera, G Cañas-Herrera, V. Capobianco, C. Carbone, J. Carretero, F. J. Castander, M. Castellano, G. Castignani, S. Cavuoti, K. C. Chambers, A Cimatti, C. Colodro-Conde, G. Congedo, Christopher J. Conselice, L. Conversi, Y. Copin, F. Courbin, H. M. Courtois, M. Cropper, A. Da Silva, H. Degaudenzi, G. De Lucia, A. M. Di Giorgio, C. Dolding, H. Dole, F. Dubath, C. A. J. Duncan, X. Dupac, S. Dusini, A. Ealet, S. Escoffier, Maximilian Fabricius, M. Farina, R. Farinelli, F Faustini, F. Finelli⋆, P. Fosalba, S. Fotopoulou, M. Frailis, E. Franceschi, S. Galeotta, Koshy George, B. Gillis, C. Giocoli, P. Gómez-Álvarez, J Gracia-Carpio, B. R. Granett, A. Grazian, F. Grupp, Stephen Gwyn, S. V. H. Haugan, Henk Hoekstra, W. Holmes
We present a detailed visual morphology catalogue for the Euclid Quick Release 1 (Q1). Our catalogue includes galaxy features such as bars, spiral arms, and ongoing mergers, for the 378 000 bright ( I E < 20.5) or extended (area ≥700 pixels) galaxies in Q1. The catalogue was created by finetuning the Zoobot galaxy foundation models on annotations from an intensive one-month campaign by Galaxy Zoo volunteers. Our measurements are fully automated, and hence fully scaleable. This catalogue is the first 0.4% of the approximately 100 million galaxies where Euclid will ultimately resolve detailed morphology.