Giuseppe Nicosia:
Abell 84, nebulosa planetaria
Giuseppe Nicosia:
Abell 39, nebulosa planetaria in Hercules
Giuseppe Nicosia:
Abell 24, nebulosa planetaria (elaborazione con Pixinsight)
Giuseppe Nicosia:
Abell 33 nebulosa planetaria
Giuseppe Nicosia:
Abell 24, nebulosa planetaria
Giuseppe Nicosia:
Abell 12, nebulosa planetaria
Giuseppe Nicosia:
Abell 4 nebulosa planetaria
Giuseppe Nicosia:
Abell 10, nebulosa planetaria.
Giuseppe Nicosia:
Abell 21 nebulosa planetaria (prova)
Giuseppe Nicosia:
Abell 21 nebulosa planetaria "Medusa Nebula"