>Shooting Messier 87 black hole jet

  • Posted on: 15 July 2019
  • By: tihomiry

For my last trip to the Rodopa mountain I decided to cross the limits and to target an object that is hard to believe that a non-professional equipment could catch.
I was impressed by the recently announced of direct radio image of M87 black hole. Messier 87 is a supergiant elliptical galaxy in the constellation Virgo, 53 million light-years. The jet is 5000 ly long and is so powerful that is compatitive in Britishness to the whole galaxy. There are a few optical images from Hubble space telescope, Chandra space telescope as well as some amateurs images in Astrobin. Wikipedia article
So I shoot M87 galaxy core and stack the images to come up with the jet from the super massive black hole at the center :O
I had to strip most of the frames as I am looking for perfectly tracked images in order to capture such a fine detail. For me this is the best shot I ever did :)
It is amazing that I got it with such a short integration time. The stack is only from 40 frames of 30s exposure. I recently got a autoguider but could not set it up
for that observations, so I had to keep high ISO 6400. However due to Pentax k5 ISO invariance it is possible to get high resolution with stack of a high ISO.
Shots are taken two consistent nights from locations 70 km apart. One is Kara Tepe and the other is the National Obseratory - Rozhen.
For that object it is same as to shoot at the same time for those locations.
Shots are taken with 200mm - SW200pds newton telescope. I tested to use x3 magnification but the additional optics spoil the fine details so I preferred to shoot in direct focus and to crop the 16M image. The limitation here is the Earth athmosphere, so the sharper the image is the better.

This is how a good single frame crop looks like
Screenshot_2

This is the final stacked image:
M87 black hole

This is second process attempt with more frames - 55 and better suppression of the galactic core:
Messier 87 black hole Jet edit 2

I will proceed to target this object as I can get the colors of the jet with more frames and some more details if manage to have autoguiding. It is so amazing that you I can see a direct evidence of a block hole by myself.

For my last trip to the Rodopa mountain I decided to cross the limits and to target an object that is hard to believe that a non-professional equipment could catch.

While cleaning up my PC I found sequences of shots of Virgo galaxy cluster taken during springs of the last 2 years. Those were attempts to shot this object, but I was not satisfied with the result and left them.

I recently bought a pocket spectroscope for laboratory use. You can find it at Ali for 5$. It is with glass prism and well build. So I did some test to use with a telescope but did not

http://www.deepskywatch.com/deep-sky-hunter-atlas.html This is an amazing resource. Detailed atlas of all the sky with NGC and IC objects.

Reading a new product that claims to be 100x time more powerful then conventional telescope, I realise that this is just an astrograph with a digital camera that is doing stacked images and show them trought eyepiece or App.

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