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Markarian's Chain and M87

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#1 whwang

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Posted 27 January 2021 - 08:20 AM

The center of the Virgo cluster is the first target I tried on a new camera of mine five years ago. The performance of the camera was very impressive, but I wasn't quite satisfied with the depth I achieved.  Earlier this month, I doubled its total integration, from 5.2 to 10.8 hours. Now the outskirts of the galaxies are smoother than before and I don't need to apply too much noise reduction in post processing. I am also surprised by the large number of globular clusters in M87 detected in this picture (and the lack of in M86, which is interesting).  I think I have reached the limit of my camera and scope. I am not going to spend another 10 hours on this target.

 

It's here:

get.jpg?insecure

 

Cheers,

Wei-Hao


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#2 lucam

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Posted 27 January 2021 - 08:28 AM

Nice one, Wei-Hao! Clean and well processed. I love all the tiny spirals in the background. This field of view really portrays the vastness of the Universe.



#3 Stellar1

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Posted 27 January 2021 - 08:47 AM

Wonderful image, lots of fuzzies to search for.



#4 jerobe

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Posted 27 January 2021 - 09:38 AM

Wow! Excellent image.  Now I need to use my magnifying glass to count the faint fuzzies.



#5 wizbang396

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Posted 27 January 2021 - 10:05 AM

Yes, excellent



#6 whwang

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Posted 27 January 2021 - 10:38 AM

Thanks.  There are indeed quite many faint tiny galaxies in the background.  Unfortunately my processing did not render them very well.  Maybe I will give the processing another try another time.  



#7 Jim Thommes

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Posted 27 January 2021 - 06:32 PM

Great image Wei-Hao.



#8 Ginge

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Posted 27 January 2021 - 06:56 PM

Nicely done, Wei-Hao!! waytogo.gif

 

Ginge



#9 Creedence

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Posted 27 January 2021 - 07:11 PM

You got the jet with the TOA150!! Proof it can be done. I think I may give it a try; thanks for the motivation.
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#10 John Miele

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Posted 27 January 2021 - 09:00 PM

Where do you image from that has Bortle 2.5 skies...!!!!



#11 whwang

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Posted 27 January 2021 - 11:45 PM

Hi John,

 

I live in Taiwan, a small island country with 24 million people.  To get away from light pollution, the only places we can go are high mountains.  All my imaging sites are about 2500m elevation or higher.  It takes about 4 to 6 hours of driving from my place to those sites.  When the weather is extremely good and there are no clouds at any elevations, we get Bortle 3 sky there (about 21.1 to 21.4 mag per sq-arcsec).  When there is a strong inversion layer and clouds at about 2000m, the clouds can block the light from cities, and we get Bortle 2 sky (21.4 to 21.6).  Occasionally we can even get Bortle 1.

 

It's not a good place for astronomy. One either have to live with intense light pollution, or have to drive for hours to dark places.  The only advantage is that a dark place in Taiwan is always also a cold place because of the high elevations.  So our DSLRs do not need any active cooling.  Dark noise is usually not an issue.

 

Cheers,

Wei-Hao


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