Unukalhai (α Ser) - The brightest star of the constellation has a magnitude of 2.65. It is located 74 light-years away from Earth and its luminosity exceeds that of the Sun by 35 times. It belongs to the spectral class K2 and is an orange giant.

β Ser - A binary star, with its yellow and blue components having magnitudes of 3.7 and 9.9, respectively, and separated by 31". They can be resolved even with a small telescope. The system is located 155 light-years away from Earth. At a distance of 201", we can still observe a component with a magnitude of 10.7.

δ Ser - The close pale yellow companions have magnitudes of 4.2 and 5.2. They orbit each other with a period of 3.170 years. In the sky, we perceive them as a pair with a separation of 4.4". In a large telescope, we can also see two faint companions with magnitudes of 14.7 and 15.

Alya (θ Ser) - Double star on the eastern edge of the constellation. The pair of blue-white stars with magnitudes 4.6 and 5.1 are separated by 22.3", so a regular telescope is sufficient for their resolution. Both belong to the spectral class A5 and are physically related. They are located at a distance of 86 light-years.

5 Ser - unequal pair of yellow 5.1 magnitude and red 10.1 magnitude components separated by 11.2". In the field of view, at a separation of 127", there is a companion of magnitude 9.1 and on the edge, a globular star cluster M5.

R Ser - A variable star of the Mira type located 10 degrees from the star Unukalhai between β and γ Ser, which reaches a maximum magnitude of 6, but disappears from view even with averted vision during its minimum, as it drops to 13.4 mag. The period of its brightness variation is approximately 1 year - 357 days.

59 Ser - The unevenly bright but attractive double star of yellow 5.3 magnitude and white component of 7.6 magnitude is located in a particularly dark area of the Great Rift. The separation between this pair is 3.8".

Struve 2303 - A close binary star observed in the field of the Milky Way interwoven with dark nebulae. Components of 6.6mag and 9.1mag at a separation of 2.1" are a very good test of quality for small telescopes and require a minimum of 150x magnification.