Home Forums RAC Main Forum General Discussion 2025 Astronomical League Observing Challenge Reply To: 2025 Astronomical League Observing Challenge

#15225
Josef Chlachula
Keymaster

    Great idea. We should include some featured objects into our public events, for example M42 (Orion Nebula) or C14 (Double cluster).
    Hubble imaged 87 of the 110 objects in the Charles Messier catalog and 89 of the 109 objects in the Caldwell catalog. So there is 87+89 = 176 potential objects to observe and compare with the Hubble images.