Hemisphere:  Northern  ·  Constellation: Leo (Leo)  ·  Contains:  IC 2745  ·  NGC 3628
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Hamburger Galaxy (NGC 3628) in Leo, 



    
        

            Steve Milne
Hamburger Galaxy (NGC 3628) in Leo
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Hamburger Galaxy (NGC 3628) in Leo

Getting plate-solving status, please wait...
Hamburger Galaxy (NGC 3628) in Leo, 



    
        

            Steve Milne
Hamburger Galaxy (NGC 3628) in Leo
Powered byPixInsight

Hamburger Galaxy (NGC 3628) in Leo

Technical card

Imaging telescopes or lenses: TEC-140

Imaging cameras: QSI 690 WSG-8

Mounts: 10 Micron GM2000 HPS II UP

Guiding telescopes or lenses: TEC-140

Guiding cameras: Starlight Xpress Lodestar X2

Focal reducers: TEC Field Flattener

Software: Sequence Generator Pro  ·  Adobe Photoshop 6 CS  ·  Open PHD PHD 2.5  ·  Pixinsight 1.8

Filters: Astrodon Tru-Balance LRGB E-Series Gen 2 Blue  ·  Astrodon Tru-Balance LRGB E-Series Gen 2 Green  ·  Astrodon Tru-Balance LRGB E-Series Gen 2 Red  ·  Astrodon Tru-Balance LRGB E-Series Gen 2 Luminance


Dates:March 25, 2020

Frames:
Astrodon Tru-Balance LRGB E-Series Gen 2 Blue: 37x300" bin 1x1
Astrodon Tru-Balance LRGB E-Series Gen 2 Green: 41x300" bin 1x1
Astrodon Tru-Balance LRGB E-Series Gen 2 Luminance: 43x600" bin 1x1
Astrodon Tru-Balance LRGB E-Series Gen 2 Red: 39x300" bin 1x1

Integration: 16.9 hours

Avg. Moon age: 0.98 days

Avg. Moon phase: 1.09%


Basic astrometry details

Astrometry.net job: 4189122

RA center: 11h 20' 35"

DEC center: +13° 34' 37"

Pixel scale: 0.552 arcsec/pixel

Orientation: 359.722 degrees

Field radius: 0.354 degrees


Resolution: 3543x2962

Locations: E-EyE, Fregenal de la Sierra, Extremadura, Spain

Data source: Own remote observatory

Remote source: e-EyE Extremadura

Description

NGC 3628 is an unbarred spiral galaxy 35 million light years away in the constellation of Leo. NGC 3628 is one of the members (the only non-Messier member) of the 'Leo Triplet' of galaxies.

Stretching out from NGC 3628 for around 300,000 light years is a ‘tidal tail’ – an elongated region of stars that arises as a result of gravitational interaction between galaxies. Within this tidal tail is an Ultra Compact Dwarf (UCD) - very compact galaxies with high stellar populations that display 'masses, colors, and metallicities between those of globular clusters and early-type dwarf galaxies' [Faifer et al. First confirmed ultra-compact dwarf galaxy in the NGC5044 group; Astronomy & Astrophysics: 9 July 2018]. NGC 3628-UCD1 may be one such object [Jennings et al. The Astrophysical Journal Letters, 812: 10 October 2015]. (I am grateful to Ken Wood for alerting me to the existence of NGC 3628-UCD1 in the description accompanying his recent image of the galaxy.)

NGC 3628 was photographed between 23 Februaryand 25 March 2020 from a rig in Spain that is privately owned and operated by Barry Wilson and me.

Capture details are as follows:

Telescope: TEC 140
Camera: QSI 690
Filters: Astrodon
Mount: 10 Micron GM2000HPS

Lum: 43 x 600s
Red: 39 x 300s
Green 41 x 300s
Blue: 37 x 300s

A total of 16 hours and 55 minutes exposure.

Data: Steve Milne & Barry Wilson
Processing: Steve Milne

The image has been rotated somewhat to stop the galaxy and tail looking like a skillet. This necessitated a little cropping.

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            Steve Milne
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    Hamburger Galaxy (NGC 3628) in Leo, 



    
        

            Steve Milne
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Hamburger Galaxy (NGC 3628) in Leo, 



    
        

            Steve Milne