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The Ultimate Observing Guide to M31’s Globular Clusters

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18 replies to this topic

#1 SNH

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Posted 26 October 2018 - 04:57 PM

I’m finally finished! I’ve been viewing and researching every deep-sky object that I can see in the Andromeda Galaxy in my telescope for over three years now. I’m extremely glad to be able to publish it now because M31 is ripe for the viewing in the evening sky. It was a surprisingly massive undertaking considering that so many globular clusters have been discovered, reclassified, and are still being discovered in the last 86 years since Hubble's first paper on them.

 

Here is the link to the 13MB zip folder (follow it and you can download it) that contains everything you need to view over 85 extragalactic deep-sky objects of the Andromeda Galaxy. I did it all with a 10-inch SCT, so I believe that many, many others can too! So please pass it around because I've read too many post on this site where people say they would like to observe them but they just don't know where to get the maps!

 

 

Scott N. Harrington


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#2 brownrb1

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Posted 26 October 2018 - 05:33 PM

Hi,

One of my proudest moments was locating G 76 with my 10" Newtonian. Thanks for your post-it inspires me to further investigate M31's globular clusters.

Dick



#3 Spartinix

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Posted 27 October 2018 - 12:12 PM

I love it Scott, thanks! I hope to explore soon :).



#4 stoest

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Posted 27 October 2018 - 01:22 PM

This is a great resource, I've just started working on some of these and it's very useful and well organized.

 

Thank you for the effort.



#5 WyattDavis

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Posted 27 October 2018 - 01:37 PM

Wow, great work! Thanks for sharing this.



#6 aatt

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Posted 27 October 2018 - 10:46 PM

Thanks! I have bagged several of them-maybe 8 ish so far.I have not made it a project yet. this will be invaluable.



#7 MG1692

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Posted 27 October 2018 - 11:14 PM

Hi,

One of my proudest moments was locating G 76 with my 10" Newtonian. Thanks for your post-it inspires me to further investigate M31's globular clusters.

Dick

Definitely less ambitious but no less thrilling was my observation of G1



#8 star drop

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Posted 29 October 2018 - 12:16 AM

Thank you, Scott!



#9 jkwhinfrey

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Posted 29 October 2018 - 10:35 AM

I have a 10" Dobsonian, but a disappointingly light polluted sky combined with the damp murk of the UK makes galaxies a little tricky for me.

 

On the other hand I wouldn't the looking for the galaxy ;-) , so after read through your introduction it might just be worth a go.

 

Thank you Scott :-)

 

James



#10 stargzr66207

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Posted 29 October 2018 - 03:54 PM

Scott,

Thanks very much for sharing the fruits of your labors with the rest of us deep sky junkies.  I have observed the 3 brightest globs in M-31, and am looking forward to working through the rest of your awesome list!

 

Ron Abbott



#11 havasman

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Posted 29 October 2018 - 04:40 PM

That's tremendous work. Thanks very much!



#12 StanH

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Posted 29 October 2018 - 05:10 PM

Scott,

 

Congratulations on putting together such a great resource.  It is amazing how many globular clusters can be seen in M31. 



#13 big_scot_nanny

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Posted 01 November 2018 - 03:32 PM

Superb resource, thank you, hopefully I'll use it this weekend. 



#14 SNH

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Posted 02 November 2018 - 04:36 PM

I've noticed a mistake or two (not in the plotting!) in the Excel sheet notes and one in my introductory article, but it'll be a week or so until I get those changes made. Congratulations to anybody that can spot them! They aren't major...

 

So glad to be able to help others for once!

 

Scott


Edited by SNH, 02 November 2018 - 04:38 PM.


#15 wky46

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Posted 03 November 2018 - 09:14 PM

Thanks so much!

Will make M31 even MORE interesting



#16 charlesgeiger

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Posted 03 November 2018 - 11:28 PM

I am just wondering what kind of skies you were observing with your 10"?



#17 SNH

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Posted 15 November 2018 - 05:24 PM

Well Charles,

I'd say great skies since I can see down to magnitude +7.5 naked-eye.

 

Scott



#18 Starman1

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Posted 16 November 2018 - 01:28 PM

I’m finally finished! I’ve been viewing and researching every deep-sky object that I can see in the Andromeda Galaxy in my telescope for over three years now. I’m extremely glad to be able to publish it now because M31 is ripe for the viewing in the evening sky. It was a surprisingly massive undertaking considering that so many globular clusters have been discovered, reclassified, and are still being discovered in the last 86 years since Hubble's first paper on them.

 

Here is the link to the 13MB zip folder (follow it and you can download it) that contains everything you need to view over 85 extragalactic deep-sky objects of the Andromeda Galaxy. I did it all with a 10-inch SCT, so I believe that many, many others can too! So please pass it around because I've read too many post on this site where people say they would like to observe them but they just don't know where to get the maps!

 

 

Scott N. Harrington

Scott,

You can also find more info at these links:

http://ned.ipac.calt...las/frames.html
http://www.cloudynig...5/o/all/fpart/1
http://astronomy-mal...Space/gcm31.htm
http://www.robgendle...osaicglobs.html



#19 SNH

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Posted 20 November 2018 - 05:57 PM

I got the link changed since I made a few updates to the Excel sheet.

 

Scott




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