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New 152 MM APM APO in the house!

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#476 hfjacinto

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Posted 24 June 2019 - 12:48 PM

Messier 92 or NGC 6341 is the "other" Globlular cluster in Hercules. M92 is one of the brighter globular clusters in the northern hemisphere, but it is often overlooked by amateur astronomers because of its proximity to the even more /better M13. M92 is visible to the naked eye under very good conditions (not in NJ). Among the Milky Way population of globular clusters, Messier 92 is among the brighter clusters in terms of absolute magnitude. It is also one of the oldest clusters (estimated age being 14.2 +/- 1.2 Billion Years.

This image is composed of 80 subs each 3 minutes long. Image was taken with APM 152, mount was a Losmandy G11, Camera was an SBIG 8300C. All acquisition was done with Sequence Generator Pro (SGP) stack and calibrated in Maxim and post processed in PhotoShop.

 

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  • M92-PS2.jpg

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#477 CvBadengoth

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Posted 24 June 2019 - 01:30 PM

...awesome!!


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#478 hfjacinto

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Posted 24 June 2019 - 03:15 PM

After using the 152 and comparing it to my other scopes, its a great imaging scope and the field is the flatest of any scope I own, I know its crazy, its a big 6" APO with a super flat field. There is a minor crop in the M92 image. Here are unprocessed edge stars, crazy good I tell you.

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  • M92 edge crop.jpg


#479 starman876

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Posted 24 June 2019 - 04:06 PM

Nice lens.  Wonder how it would test in DPAC?


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#480 hfjacinto

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Posted 24 June 2019 - 04:24 PM

Nice lens. Wonder how it would test in DPAC?


In the end does it really make a difference? I’m happy with it. It takes great picture.
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#481 daquad

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Posted 24 June 2019 - 06:44 PM

Messier 92 or NGC 6341 is the "other" Globlular cluster in Hercules. M92 is one of the brighter globular clusters in the northern hemisphere, but it is often overlooked by amateur astronomers because of its proximity to the even more /better M13. M92 is visible to the naked eye under very good conditions (not in NJ). Among the Milky Way population of globular clusters, Messier 92 is among the brighter clusters in terms of absolute magnitude. It is also one of the oldest clusters (estimated age being 14.2 +/- 1.2 Billion Years.

This image is composed of 80 subs each 3 minutes long. Image was taken with APM 152, mount was a Losmandy G11, Camera was an SBIG 8300C. All acquisition was done with Sequence Generator Pro (SGP) stack and calibrated in Maxim and post processed in PhotoShop.

Interesting that the estimated age of M92 is greater than the estimated time since the Big Bang.  Great pic, BTW.

 

Dom Q.


Edited by daquad, 24 June 2019 - 06:44 PM.


#482 CHASLX200

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Posted 24 June 2019 - 06:45 PM

Messier 92 or NGC 6341 is the "other" Globlular cluster in Hercules. M92 is one of the brighter globular clusters in the northern hemisphere, but it is often overlooked by amateur astronomers because of its proximity to the even more /better M13. M92 is visible to the naked eye under very good conditions (not in NJ). Among the Milky Way population of globular clusters, Messier 92 is among the brighter clusters in terms of absolute magnitude. It is also one of the oldest clusters (estimated age being 14.2 +/- 1.2 Billion Years.

This image is composed of 80 subs each 3 minutes long. Image was taken with APM 152, mount was a Losmandy G11, Camera was an SBIG 8300C. All acquisition was done with Sequence Generator Pro (SGP) stack and calibrated in Maxim and post processed in PhotoShop.

 I use M13 and use it to find M92. Kinda like a bigger M15.



#483 hfjacinto

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Posted 24 June 2019 - 09:44 PM

Interesting that the estimated age of M92 is greater than the estimated time since the Big Bang.  Great pic, BTW.

 

Dom Q.

Yep, I saw that also. Sometimes I wonder if Wikipedia is right, but several sources quoted the same age....



#484 starman876

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Posted 25 June 2019 - 06:18 PM

Yep, I saw that also. Sometimes I wonder if Wikipedia is right, but several sources quoted the same age....

Wikipedia gets information from whomever contributes.  I hope someone is doing some fact checking. 



#485 areyoukiddingme

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Posted 25 June 2019 - 08:36 PM

Wikipedia gets information from whomever contributes.  I hope someone is doing some fact checking. 

 

Huh? The Wiki article cites the source. You can look it up and make up your own mind.

 

https://arxiv.org/abs/astro-ph/0703167


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#486 daquad

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Posted 26 June 2019 - 09:30 AM

Huh? The Wiki article cites the source. You can look it up and make up your own mind.

 

https://arxiv.org/abs/astro-ph/0703167

 

14.2 +/- 1.2 (13.0 to15.4)  The statistical spread contains the accepted age of the universe (13.8 Gyr).  Whew!


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