Go Back   IceInSpace > General Astronomy > Observational and Visual Astronomy

Reply
 
Thread Tools Rate Thread
  #1  
Old 08-08-2019, 03:41 AM
glenc's Avatar
glenc (Glen)
star-hopper

glenc is offline
 
Join Date: Jun 2005
Location: Terranora
Posts: 4,311
The First Three Southern Deep Sky Catalogues

Three men made the first catalogues of southern clusters, nebulae and galaxies.

The first was the Frenchman Nicolas-Louis de Lacaille.
He observed from Cape Town in 1751 and 1752 with a half inch diameter refractor and discovered 29 new objects: 22 open clusters, 4 globular clusters, 2 nebulae and a galaxy (M83).

The second was a poor Scotsman, James Dunlop.
He observed from Parramatta, NSW in 1826 with a nine inch diameter speculum (67% copper and 33% tin) reflector and discovered 298 new objects: 134 open clusters, 44 globular clusters, 61 nebulae, 4 planetary nebulae, 2 dark nebulae and 53 galaxies. He was the first to catalogue the objects in the Large and Small Magellanic Clouds. His 9 foot long telescope had the light gathering power of a modern 6 inch reflector.

The third was a wealthy Englishman, John Herschel, the son of William Herschel.
He observed near Cape Town from 1834 to 1838 with an 18.5 inch diameter speculum reflector and discovered 1003 new objects: 229 open clusters, 15 globular clusters, 55 nebulae, 16 planetary nebulae and 688 galaxies. His 20 foot long telescope had the light gathering power of a modern 16 inch reflector.

The attached file contains 150 objects from Dunlop’s 1826 catalogue.
It includes 33 objects that were found by Lacaille, William Herschel and others.
At 8pm in mid-August RA 18 is overhead.
Attached Files
File Type: pdf Dunlop 150.pdf (120.7 KB, 37 views)
Reply With Quote
  #2  
Old 08-08-2019, 07:41 PM
gaseous's Avatar
gaseous (Patrick)
Registered User

gaseous is offline
 
Join Date: May 2016
Location: Brisbane
Posts: 782
Thanks for the list Glen, and thanks for pointing out some of those PN's at Astrofest last week as well - very enjoyable.
Reply With Quote
  #3  
Old 09-08-2019, 01:20 AM
glenc's Avatar
glenc (Glen)
star-hopper

glenc is offline
 
Join Date: Jun 2005
Location: Terranora
Posts: 4,311
Thanks Patrick for sharing your 20" scope
Reply With Quote
Reply

Bookmarks

Thread Tools
Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT +10. The time is now 11:43 PM.

Powered by vBulletin Version 3.8.7 | Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Advertisement
Testar
Advertisement
Bintel
Advertisement