Hemisphere:  Northern  ·  Constellation: Coma Berenices (Com)  ·  Contains:  NGC 4559
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NGC 4559 (Caldwell 36) in Coma Berenices, 



    
        

            Steve Milne
NGC 4559 (Caldwell 36) in Coma Berenices
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NGC 4559 (Caldwell 36) in Coma Berenices

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: Ha 3nm  ·  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:Feb. 14, 2021

Frames:
Astrodon Tru-Balance LRGB E-Series Gen 2 Blue: 30x300" bin 1x1
Astrodon Tru-Balance LRGB E-Series Gen 2 Green: 30x300" bin 1x1
Ha 3nm: 15x1200" bin 1x1
Astrodon Tru-Balance LRGB E-Series Gen 2 Luminance: 48x600" bin 1x1
Astrodon Tru-Balance LRGB E-Series Gen 2 Red: 30x300" bin 1x1

Integration: 20.5 hours

Avg. Moon age: 2.63 days

Avg. Moon phase: 7.61%


Basic astrometry details

Astrometry.net job: 4227793

RA center: 12h 35' 58"

DEC center: +27° 57' 28"

Pixel scale: 0.745 arcsec/pixel

Orientation: 89.708 degrees

Field radius: 0.434 degrees


Resolution: 3298x2595

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

Data source: Own remote observatory

Remote source: e-EyE Extremadura

Description

NGC 4559 is a mixed spiral galaxy around 30 million light years away in the constellation of Coma Berenices. 'Mixed' here means that it is somewhere between a barred spiral and an unbarred spiral. The galaxy spans around 100,000 light years and has a total mass of around 40 billion Suns (O'Meara - The Caldwell Objects: Second Edition; CUP 2016). Sir Patrick Moore listed the galaxy as object 36 in his list of Caldwell objects.

NGC 4559 was photographed between 13 January and 14 February 2021.

Capture details are as follows:

Telescope: TEC 140
Camera: QSI 690
Filters: Astrodon
Mount: 10 Micron GM2000HPS (2020); Mesu 200 (2018)

Ha: 15 x 1200s
Lum: 48 x 600s
Red: 30 x 300s
Green 30 x 300s
Blue: 30 x 300s

A total of 20 hours and 30 minutes exposure.

Data: Steve Milne & Barry Wilson
Processing: Steve Milne

Comments

Sky plot

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Histogram

NGC 4559 (Caldwell 36) in Coma Berenices, 



    
        

            Steve Milne