Complex sentence: The list he compiled contains only objects found in the sky area he could observe: from the north celestial pole to a celestial latitude of about − 35.7 ° and are not organized scientifically by object type, or even by location.
Split into simpler sentences: The list he compiled contains only objects found in the sky area he could observe, from the north celestial pole to a celestial latitude of about − 35.7 °. They are not organized scientifically by object type, or even by location.