The available time offered in this call at TNG via INAF-TAC is 67 nights, 47 of which are reserved to exo-planetary research programs (see special notices below) and 20 are for other science programs. We encourage applicants to submit proposals asking a row of consecutive nights to be done in visitor mode. The budget can increase if not all the nights offered in other calls will be effectively allocated by the respective TACs. The foreseen schedule breakdown is reported at the bottom. All proposals will be judged strictly on their scientific merit.

Spectroscopic observations obtained with the spectrograph DOLORES installed at the Telescopio Nazionale Galileo enabled astronomers to determine the redshift of one of the most distant lensing galaxies known to date. The system, J1453+0529, consists of a quasar at redshift 2.82 whose light is gravitationally lensed by a foreground elliptical galaxy at redshift 1.055. The lens produces a rare quadruple configuration with an extremely small separation between the images. High-resolution imaging clearly shows the four quasar images arranged around the central lensing galaxy (see Figure 1). This configuration allows astronomers to measure the Einstein radius with great precision and determine the total mass enclosed within it, providing strong constraints on the stellar initial mass function in the galaxy’s central region.

We are pleased to announce that TNG and REM are offering observing time within the Opticon Alliance for the next 2 semesters. In particular, TNG will offer 5 nights per semester from October 1^st 2026 to September 30 ^th 2027, while REM will offer 112 hours per semester.
The call will close on April 17^th, 2026 at 23.59 UT.