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Contains:  M 87, NGC 4486, NGC 4478, NGC 4476
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M 87, 





    
        

            Michael Timm
M 87

M 87

Technical card

Resolution: 6677x4888

Dates:April 21, 2019May 12, 2019

Frames: 140x120" (gain: 120.00) -20C bin 1x1

Integration: 4.7 hours

Darks: ~173

Flats: ~50

Flat darks: ~50

Avg. Moon age: 12.41 days

Avg. Moon phase: 75.01%

Bortle Dark-Sky Scale: 5.00

Mean SQM: 19.80

Astrometry.net job: 2693278

RA center: 187.667 degrees

DEC center: 12.316 degrees

Pixel scale: 0.299 arcsec/pixel

Orientation: 270.520 degrees

Field radius: 0.343 degrees

Locations: Backyard, Vechelde, Niedersachsen, Germany

Data source: Backyard

Description

My plan was to capture the relativistic jet produced by the outskirts of the supermassive black hole in Messier 87's center. Well, i achieved that goal but only with a bit imagination. One can see the jet, but it is no more than a small, blueish line. I think there was more possible. A monochrome camera with some nice narrowband filters would have done that job way better. But anyways - i decided not to go narrowband when i started imaging and i stand behind my decisions. Maybe in a few years i will change that - but not before my processing skills have improved a lot. One step after the other.

So, back to the image. I started this project shortly after the great success of the EHT - like many others. I think that M 87 is a quite popular target these days. My first imaging session in April started fair, but not good. Seeing was good, but auotguiding was horrible. And then the clouds came to germany and stayed for about three long weeks until yesterday. We had a clear night with fair seeing, but the moon was already at about 55 % or so and the nights are getting short over here. But the autoguiding was unbelievable good. I think the reason is that i spent more time with the polar alignment, which was accurate by about 10 arcseconds in every direction - which is a good value for me. I am pretty sure that this effort in polar aligning was responsible for my good autoguiding. Mental note: Take the time to do the polar alignment right.

All in all i am satisfied with this image. I can say that i imaged a relativistic jet coming out from the surrounding of a supermassive black hole by myself :-)

Sadly enough i was not able to image the black hole directly :-p Next time i'll buy a few 300 meter-radiotelescopes, install them all around the globe and will do that :-) (Just joking.)

Comments

Author

khrrugh
Michael Timm
License: None (All rights reserved)
1281
Like

Revisions

  • Final
    M 87, 





    
        

            Michael Timm
    Original
  • M 87, 





    
        

            Michael Timm
    B
  • M 87, 





    
        

            Michael Timm
    C

B

Crop on M 87 and the jet.

C

Zoom into the heart of M 87 (image of the black hole by EHT Collaboration, released under CC4.0) :-)

Sky plot

Sky plot

Histogram

M 87, 





    
        

            Michael Timm