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).