Thread: Dunlop by date
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Old 10-04-2023, 09:47 AM
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glenc (Glen)
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Dunlop by date

The attached file lists the globular clusters and galaxies found by James Dunlop in 1826 from Parramatta, NSW. It is sorted by the date and time that he found these 74 objects.
He observed with a 9" aperture telescope that was 9' long.
Its speculum mirror was equivalent to a modern 6" reflector.

Dunlop discovered an amazing 298 new southern deep sky objects in only 7 months, 28 in the Small Magellan Cloud (from 1 Aug to 6 Sep), 120 in the Large Magellan Cloud (from 3 Aug to 6 Nov), and 150 outside the two clouds: 67 open clusters, 51 galaxies, 23 globular clusters, 4 planetary nebulae, 3 nebulae and 2 dark nebulae.

Lacaille (1750-51), Dunlop (1826) and John Herschel (1834-38) were the first to make catalogues of southern deep sky objects.
Attached Files
File Type: pdf Dunlop GC Gxy.pdf (201.0 KB, 43 views)
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