Herschel 400 Catalog Archives - Roger Nelson Astronomy

Beauty abounds in Kemble’s Cascade and NGC 1502

Roger Nelson February 22, 2024Asterisms, Herschel 400 Catalog, Lists, Log Book, Open Clusters, Portfolios Leave a Comment

Kemble’s Cascade – a beautiful cascade of faint stars tumbling Kemble’s Cascade (designated Kemble 1) is an asterism located in the constellation Camelopardalis. It is an apparent straight line of more than 20 colourful 5th to 10th magnitude stars over …

NGC 6445

Roger Nelson February 14, 2024110 Finest NGCs, Herschel 400 Catalog, Lists, Log Book, NGC Objects, Planetary Nebulas, Portfolios Leave a Comment

NGC 6445 NGC 6445, also known as the Little Gem Nebula or Box Nebula, is a planetary nebula in the constellation Sagittarius. It was discovered by William Herschel on May 28, 1786. The distance of NGC 6445 is estimated to …

NGC 6520

Roger Nelson February 14, 2024110 Finest NGCs, Herschel 400 Catalog, Lists, Log Book, NGC Objects, Open Clusters, Portfolios Leave a Comment

NGC 6520 NGC 6520 is an open cluster in the constellation Sagittarius, superimposed upon the Large Sagittarius Star Cloud. It is magnitude 9.0, diameter 5 arc minutes and class G. It has about 25 stars of magnitude 9 to 12. The dark nebula Barnard 86 lies near its …

NGC 6818

Roger Nelson February 14, 2024110 Finest NGCs, Herschel 400 Catalog, Lists, Log Book, NGC Objects, Planetary Nebulas, Portfolios Leave a Comment

NGC 6818 NGC 6818, Little Gem Nebula is a planetary nebula located in the constellation of Sagittarius. It has magnitude 10 and oval diameter of 15 to 22 arcseconds with a 15th magnitude central star. It was discovered by William …

NGC 6802

Roger Nelson February 14, 2024110 Finest NGCs, Herschel 400 Catalog, Lists, Log Book, NGC Objects, Open Clusters, Portfolios Leave a Comment

NGC 6802 NGC 6802 is a Open Cluster in the Vulpecula constellation. The Cluster lies at the E. End of the “Coat Hanger” asterism also called Brocchi’s Cluster (Collander 399) Just to the right of 7 Vul. The “rail” of …

NGC 6940

Roger Nelson February 14, 2024110 Finest NGCs, Herschel 400 Catalog, Lists, Log Book, NGC Objects, Open Clusters, Portfolios Leave a Comment

NGC 6940 NGC 6940 is an open cluster in the constellation Vulpecula. It was discovered by William Herschel in 1784. The cluster is nearly a billion years old and it is located 2,500 light years away. It is considered the …

NGC 6939

Roger Nelson February 14, 2024110 Finest NGCs, Herschel 400 Catalog, Lists, Log Book, NGC Objects, Open Clusters, Portfolios Leave a Comment

NGC 6939 NGC 6939 is an open cluster in the constellation Cepheus. It was discovered by William Herschel in 1798. The cluster lies 2/3° northwest from the spiral galaxy NGC 6946. The cluster lies approximately 4,000 light years away and …

NGC 6946

Roger Nelson February 14, 2024110 Finest NGCs, Galaxies, Herschel 400 Catalog, Lists, Log Book, NGC Objects, Portfolios Leave a Comment

NGC 6946 NGC 6946, sometimes referred to as the Fireworks Galaxy, is a face-on intermediate spiral galaxy with a small bright nucleus, whose location in the sky straddles the boundary between the northern constellations of Cepheus and Cygnus. Its distance …

NGC 40

Roger Nelson February 14, 2024110 Finest NGCs, Herschel 400 Catalog, Lists, Log Book, NGC Objects, Planetary Nebulas, Portfolios Leave a Comment

NGC 40 NGC 40 (also known as the Bow-Tie Nebula and Caldwell 2) is a planetary nebula discovered by William Herschel on November 25, 1788, and is composed of hot gas around a dying star. The star has ejected its …