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  #21  
Old 15-09-2011, 05:02 AM
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glenc (Glen)
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Dunlop Marathon

On the weekend of 15/6/2012 it should be possible to see all of the 150 Dunlop objects in one night.
Maybe we could have a Dunlop Marathon. (new moon is 19/6/12)
The objects nearest the Sun on that date are NGC 2090 and NGC 2298.

In the USA they have Messier Marathons.
http://www.robhawley.net/mm/
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  #22  
Old 27-09-2011, 12:41 AM
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October

There are some great Dunlop objects visible in October, 14 of them transit at about 10pm (11pm DST). The best one is the globular 47 Tuc (NGC 104).
Three SMC objects NGCs 261, 330 and 346 (a magnificent nebula) and 10 galaxies also transit at about 10 pm.
The best of these galaxies are NGC 55 and the Grus quartet NGCs 7552,82,90,99. NGCs 300 and 7793 are also impressive.
https://picasaweb.google.com/1100488...52146/Dunlop28

Last edited by glenc; 27-09-2011 at 06:16 AM.
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  #23  
Old 27-09-2011, 09:44 AM
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Dunlop's 1827 printed catalogue is here http://www.jstor.org/stable/107841
http://www.jstor.org/stable/select/1...&thumbPage=all
This is the first drawing of the SMC http://www.jstor.org/stable/107841?s...rviceName=null

Last edited by glenc; 02-10-2011 at 06:52 AM.
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  #24  
Old 30-09-2011, 05:47 AM
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Quote:
Originally Posted by glenc View Post
In the last 3 weeks I have seen 147 of the 150 Dunlop objects with a 12" Dobsonian scope. The remaining three are NGC 2997, NGC 3621 and IC 2714.
I saw NGC 2997 and IC 2714 this morning. One more to go.
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  #25  
Old 08-10-2011, 08:51 PM
astrospotter (Mark)
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Very nice list and much appriciated

What a great list. All over IceInSpace and in my earlier studies of great objects to seek out down in the south skies James Dunlop comes up time and again.

This list is a real keeper and organized so well with NGC and Dunlop designations along with the other colums that are very helpful for planning any observations.

THANKS!
Mark Johnston
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  #26  
Old 09-10-2011, 01:14 AM
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Thanks Grant, Faith and Mark. It is a great list for southern observers.
Many of the galaxies look great. I like images of NGC 986.
https://picasaweb.google.com/1100488...28552265478066
Auke Slotegraaf includes 986 on his excellent website http://www.docdb.net/show_object.php?id=ngc_986
Faith you might want to attend one of the astrocamps. (eg Qld Astrofest)

Last edited by glenc; 09-10-2011 at 02:09 AM.
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  #27  
Old 25-10-2011, 06:52 AM
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All seen

This morning I saw the galaxy NGC 3621. I have now seen all of the 150 Dunlop deep sky objects on this list with my 12" Dobsonian reflector.
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  #28  
Old 25-10-2011, 07:56 AM
mikerr (Michael)
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Good one Glen! What time did you get to see it?
Looking at Stellarium I'm guessing about 4.30am at my location.

Michael
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  #29  
Old 25-10-2011, 03:02 PM
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Thanks Michael. About 4:10am. Set the alarm.
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  #30  
Old 26-10-2011, 09:48 AM
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November

Nine Dunlop objects transit at about 10pm in November (11pm DST).
The globular NGC 362 on the north side of the SMC and three SMC nebulae NGCs 371, 456 and 602 are visible.
Five galaxies are also well placed IC 1633 and NGCs 613, 625, 986 and 1097.
Wikisky images of these 9 objects and Dunlop's descriptions start here:
https://picasaweb.google.com/1100488...28511350388834
IC 1633 is here https://picasaweb.google.com/1100488...58806496955442
William Herschel found NGCs 613 and 1097, Dunlop found the other 7 DSO in 1826.
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  #31  
Old 28-10-2011, 04:54 PM
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To help with my observing I have entered Glen's Dunlop 150 list into SkySafari as an observing list, I only had problems finding 4 objects in Sky Safari.

Markarian 18:
A quick Google indicates this is also known as Collinder 205. A check back to Glen's paper confirms this.

Harvard 6:
Again a Google indicates this is Collinder 261, I was unable to verify this further but I left it in the list as Cr261

Norma star cloud:
There was nothing in the SkySafari catalogs I could use for this.

Bernes 157:
I could find no other designation for this one to use.

Thank's Glen for the list, now I just need the clouds to go away.
Attached Files
File Type: zip Dunlop 150.zip (12.0 KB, 16 views)
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  #32  
Old 29-10-2011, 01:45 AM
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Thanks Michael.
The middle of the Norma star cloud (16h20m -53d15m) is about 1.5 degrees NE of NGC 6067 and the cloud is 4 degrees long.
The middle of Bernes 157 (19h4m -37d5m) is nearly 1 degree SE of the globular NGC 6723 and the dark nebula is 1 degree long.
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  #33  
Old 29-10-2011, 06:01 AM
Poita (Peter)
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Thanks so much for this, it is giving me great personal enjoyment and is a great teaching resource also!
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  #34  
Old 30-10-2011, 08:41 AM
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Peter you are welcome.
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  #35  
Old 30-10-2011, 08:48 AM
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Dunlop's telescope.

Dunlop's 1826 telescope was 9" (23 cm) in aperture and 9' (2.7 m) in focal length.
His two speculum mirrors reflected about 65% of the light each or 42% if you count the reflections at the primary and the secondary. Today's aluminium mirrors reflect about 93% of the light or 86% if you count the reflections at the primary and the secondary. This means his 9" was about equal to a 6.3" Newtonian with two aluminium mirrors. He had to climb a ladder to discover objects high in the sky, and use a candle to write notes and to read the clock and the south polar distance (declination) 185 years ago at his house in Hunter St. Parramatta NSW. The attached Google Earth image shows the location of his house and the backyard observatory where he made catalogues of clusters, nebulae and double stars.
The church 50m east of Dunlop's house is St Johns. http://english.stjohnscathedral.org....-/our-heritage
Attached Thumbnails
Click for full-size image (Dunlops house.jpg)
150.5 KB20 views

Last edited by glenc; 30-10-2011 at 09:06 AM.
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  #36  
Old 23-11-2011, 10:10 AM
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December

Twenty-six of the "150 Dunlop Deep Sky Objects" transit at about 10pm in December (11pm DST) - one globular cluster, four nebulae and 21 galaxies.
The Globular is NGC 1261 in Hor. The nebulae are NGCs 1722, 1743, 1763 and 1770 in the LMC.
The 5 brightest galaxies are NGCs 1269, 1313, 1316, 1365, 1553 and 1566.
Wikisky images and Dunlop's descriptions of the 26 Dunlop DSO start here:
https://picasaweb.google.com/1100488...28570659595186
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  #37  
Old 14-01-2012, 06:41 AM
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January

Eighteen of the "150 Dunlop Deep Sky Objects" transit at about 10pm in January (11pm DST) - 3 open cluster, 3 globular cluster, 8 nebulae and 4 galaxies.
Twelve of the 18 objects are in the LMC, the best one being NGC 2070. It is interesting to sweep the LMC with and without a UHC filter.

The remaining objects are the globulars NGCs 1851 and 2298 and the galaxies NGCs 1792, 1808, 1947 and 2090.
I often look at NGC 1851 and the nearby galaxy pair NGCs 1792 and 1808.
https://picasaweb.google.com/1100488...58844115852706

You can see images of NGC 1792 to NGC 2298 here:
https://picasaweb.google.com/1100488...2146/Dunlop28#
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  #38  
Old 16-01-2012, 03:44 AM
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LMC nebulae

This image of the LMC by Marco Lorenzi shows its nebulae well.
http://apod.nasa.gov/apod/ap110426.html
http://apod.nasa.gov/apod/image/1104...renzi2000c.jpg
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  #39  
Old 17-02-2012, 06:25 AM
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February

Only 3 of the "150 Dunlop Deep Sky Objects" transit at about 10pm in February (11pm DST), all of them are open clusters.
They are NGCs 2477, 2516 and 2547.
2477 is rich https://picasaweb.google.com/1100488...13744641565442
2516 is bright https://picasaweb.google.com/1100488...13769817843986
2547 contains nebulosity https://picasaweb.google.com/1100488...13807100806850


Last edited by glenc; 17-02-2012 at 06:52 AM.
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  #40  
Old 30-03-2012, 03:04 PM
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March

11 of the "150 Dunlop Deep Sky Objects" transit at about 10pm in March (11pm DST),
4 open clusters; Markarian 18, NGC 3114, NGC 3293, Melotte 101
3 nebulae; NGCs 3199, 3324, 3372 (eta Car)
2 globular clusters; NGCs 2808, 3201
1 open cluster/planetary nebula NGC 2818 and
1 galaxy NGC 2997.
Wikisky.org images are at https://picasaweb.google.com/1100488...52146/Dunlop28
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