Publications (4)
Towards Precision Photometry with Extremely Large Telescopes: the Double Subgiant Branch of NGC 1851
P. Turri, A. W. McConnachie, P. B. Stetson +4
The Extremely Large Telescopes currently under construction have a collecting area that is an order of magnitude larger than the present largest optical telescopes. For seeing-limi…
Optimal stellar photometry for multi-conjugate adaptive optics systems using science-based metrics
P. Turri, A. W. McConnachie, P. B. Stetson +5
We present a detailed discussion of how to obtain precise stellar photometry in crowded fields using images from multi-conjugate adaptive optics (MCAO) systems, with the intent of…
GeMS MCAO observations of the Galactic globular cluster NGC 2808: the absolute age
Davide Massari, G. Fiorentino, A. McConnachie +7
Globular clusters are the oldest stellar systems in the Milky Way and probe the early epoch of the Galaxy formation. However, the uncertainties on their absolute age are still too…
Astrometry with MCAO: HST-GeMS proper motions in the globular cluster NGC 6681
D. Massari, G. Fiorentino, A. McConnachie +7
Aims: for the first time the astrometric capabilities of the Multi-Conjugate Adaptive Optics (MCAO) facility GeMS with the GSAOI camera on Gemini-South are tested to quantify the a…