NGC 1501 (Camelopardalis)

Object image
Fig.1 - Bluish oyster in the sky: The planetary nebula NGC 1501 in Camelopardalis, photographed with a 16-inch f/4.5 Dob on an equatorial platform.
Object name: Constellation: Coordinates: Apparent size: Visual brightness:
NGC 1501 Camelopardalis 04h07m / +60°55' 52" x 52" 11.5 mag

The planetary nebula NGC 1501 (also known as Oyster Nebula) in the constellation Camelopardalis. NGC 1501 is a hot gas cloud surrounding a dying Wolf-Rayet central star. The star has a surface temperature of about 130,000 degrees Celsius. NGC 1501 is roughly 4,200 light-years from Earth and was discovered by William Herschel in 1787 (source: Wikipedia).

Twenty-six 3-minute exposures (77 minutes total exposure) at ISO 800 taken on November 14 / 15, 2020 were added for this shot with the DeepSkyStacker software and the final image processing was done in Photoshop.

Equipment: Canon EOS 450D Baader modified camera, TeleVue Paracorr Type II coma corrector, 16" f/4.5 "Ninja" dobsonian telescope riding on a dual-axis Tom Osypowski equatorial platform, Lacerta MGEN autoguider, Lacerta off axis system (field of view comparison: image of the moon with the same equipment).

Search chart
Fig.2 - Search chart for NGC 1501. Map © 2020 "The Mag-7 Star Atlas Project", Map is slightly modified. The map can be downloaded here.