Deep Sky Challenge Certificate
About the DSC List
The DSC list, compiled by Alan Dyer and Alister Ling compliments the FNG List as there is no overlap. The list features "fringe" deep sky treasures that are somewhat more challenging objects then what most observers look for. The attraction of observing is not the sight of an object itself but our intellectual contact with what it is. The DSC certificate has been awarded since 2008. Prior to this a letter of achievment was given out by the observing committie by anyone who had compleated the DSC list. Those who have recived this have been awarded the certificate in 2008. An application form can be found from a link at the bottom of this page.
Here is an overview of the DSC Observing List:
| Finest NGC Objects | Number | Notes |
| Open Clusters | 2 | NGC 609 in Cassiopiea and NGC 6791 in Lyra. |
| Globular Clusters | 4 | Includes Palomar 11 in Aquila. |
| Emmison/Reflection Nebulae | 13 | Includes California Nebulae in Perseus and Barnards Loop in Orion. |
| Dark Nebulae | 2 | Includes B33 the Horsehead and B72 the Snake. |
| Planetary Nebulae | 8 | Includes Jones 1 in Pegasus. |
| Supernovae Remnants | 1 | |
| Galaxies / Galaxy Clusters / Quasars | 15 | |
| Total | 45 |
The RASC's DSC Certificate
The DSC list is an excellent project for those who have completed their FNG essier Certificate and who are looking for a challenging observing program. The official list can be found in the RASC Observer's Handbook. At least a 30 cm (12 inch) telescope is recommended to complete most of the list although it can be done with a 25 cm (10 inch) under good skies. A few of the objects will require access to a large telescope (50 cm / 20 inch). Several DSC objects can be observed in even smaller instruments so these could be used to get started on the brighter objects. With all instruments a nebular filter will be necessary to see the often visually faint glowing clouds of gas and dust of some objects.
The DSC certificate can be started during any season. You must be a member in good standing of the RASC to be awarded this certificate.
Resources
Here are some recommended resources to help you tackle the DSC Certificate program:
- Sky Atlas 2000 - by Will Tirion is an excellent sky chart set that contains most of the Finest NGC list.
- The Night Sky Observer's Guide (Volumes One and Two) - by George Robert Kepple and Glen W. Sanner contains descriptions and finder charts for most of the objects on the Finest NGC list.