Hemisphere:  Northern  ·  Contains:  NGC 3628
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NGC 3628  The Hamburger Galaxy, 


            Michael Deyerler
NGC 3628  The Hamburger Galaxy
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NGC 3628 The Hamburger Galaxy

Technical card

Imaging telescopes or lenses: Philipp Keller (Astrooptik) RC 900mm F/10

Imaging cameras: SBIG STL-11000M

Focal reducers: Reducer 0.66x

Software: Pixinsight 1.8

Filters: RGB

Dates:Dec. 4, 2019

Frames: 30x240"

Integration: 2.0 hours

Avg. Moon age: 7.57 days

Avg. Moon phase: 52.00%

Basic astrometry details

Astrometry.net job: 3287418

RA center: 11h 20' 17"

DEC center: +13° 34' 37"

Pixel scale: 0.308 arcsec/pixel

Orientation: 7.778 degrees

Field radius: 0.163 degrees

Resolution: 2595x2776

Locations: Mirasteilas Observatory, Falera, Graubünden, Switzerland

Data source: Backyard


This is a medium deep image of the galaxy NGC3628 by the beautiful Telescope called CEDES of Mirasteilas observatory in Graubünden. The limiting star g-magnitude is about 20.5mag. Further reading for this galaxy is available at https://en.wikipedia.org/wiki/NGC_3628.

In the Version C of the image I have marked some quasars visible in this frame. The farthest with quite high redshift of z=2.15 or a light distance of 17.8Gly.
I am aware that any distance calculation at high redshifts is critical due to the impact of cosmological parameters which are constantly updated and reflect our to date understanding of cosmos.
For the distance calculation I used this online calculator using a Hubble Constant of H=69.6 and an open universe model. http://www.astro.ucla.edu/~wright/CosmoCalc.html
So anyone is free to calculate the distances to his own preferred set of cosmological constants, It won't change much - they are far far away.
Another interresting aspect is the high density of quasars around this galaxy. The quasar redshift , if interpreted as distance, would prohibit any morphological link between NGC3628 and the quasars. To remember NGC3628 is at a distance of 34 to 40Mly (z=0.00288) and the Quasars are located at some 5 to 20 Gly.
So the question is, if the quasars are a product of ejection mechanisms of NGC3628, then there is something fundamentally wrong with the redshift to distance scale.
Further readings can be found here: https://cds.cern.ch/record/563448/files/0206411.pdf and in ESO Messenger No: 107 (March 2002) p.38 (https://www.eso.org/sci/publications/messenger/archive/no.107-mar02/messenger-no107.pdf)
Happy reading



Michael Deyerler
License: None (All rights reserved)


  • NGC 3628  The Hamburger Galaxy, 


            Michael Deyerler
  • Final
    NGC 3628  The Hamburger Galaxy, 


            Michael Deyerler


Description: This is an annotatd version of NGC3628 indicating quasars.

Sky plot

Sky plot


NGC 3628  The Hamburger Galaxy, 


            Michael Deyerler