Hemisphere:  Northern  ·  Constellation: Coma Berenices (Com)  ·  Contains:  IC 3571  ·  IC3571  ·  NGC 4562  ·  NGC 4565  ·  NGC4562  ·  NGC4565  ·  Needle Galaxy
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The Needle Galaxy (NGC 4565), 



    
        

            KuriousGeorge
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The Needle Galaxy (NGC 4565)

Getting plate-solving status, please wait...
The Needle Galaxy (NGC 4565), 



    
        

            KuriousGeorge
Powered byPixInsight

The Needle Galaxy (NGC 4565)

Imaging telescopes or lenses: Planewave CDK24

Imaging cameras: FLI Proline 16803

Mounts: Planewave L600

Guiding cameras: Starlight Xpress Ultrastar

Focal reducers: None

Software: Planewave PWI4  ·  Planewave PWI3  ·  PixInsight 1.8  ·  Sequence Generator Pro  ·  Photoshop CS3  ·  PHD Guiding 2  ·  CCDWare CCD Inspector  ·  Maxim DL6

Filters: Astrodon 50mm B  ·  Astrodon 50mm R  ·  Astrodon 50mm L  ·  Astrodon 50 mm G

Accessory: FLI CFW-5-7  ·  Astrodon Monster MOAG  ·  Hedrick Focuser  ·  Planewave Delta-T  ·  Planewave EFA


Dates:June 18, 2020June 19, 2020June 21, 2020June 23, 2020

Frames:
Astrodon 50 mm G: 4x900" -30C bin 1x1
Astrodon 50mm B: 4x900" -30C bin 1x1
Astrodon 50mm L: 16x900" -30C bin 1x1
Astrodon 50mm R: 4x900" -30C bin 1x1

Integration: 7.0 hours

Darks: ~20

Flats: ~80

Flat darks: ~80

Bias: ~20

Avg. Moon age: 14.28 days

Avg. Moon phase: 4.21%

Mean SQM: 21.70

Mean FWHM: 1.90


Astrometry.net job: 3629410

RA center: 12h 36' 9"

DEC center: +25° 56' 16"

Pixel scale: 0.234 arcsec/pixel

Orientation: -178.817 degrees

Field radius: 0.250 degrees


Resolution: 5704x5188

Locations: KG Observatory, Julian, CA, United States

Data source: Backyard

Description

One more June object. (-:

While waiting for M16 and The Crescent Nebula to come into view, I'd aim for NGC 4565 from 9:15 PM (66°) to 11 PM (44°).

My goal was to get very detailed in the center, thus only keeping the very best subs over a 10-day dark period.

Fortunately this resulted in 16 15-minute luminance subs (4 hours) with FWHM between 1.85" and 2.21". (-:

Skies were very dark (21.7 SQM) so 2-hours of each R, G and B (rather than my normal 3 hours) provided very good color and low noise.

"NGC 4565 (also known as the Needle Galaxy or Caldwell 38) is an edge-on spiral galaxy about 30 to 50 million light-years away in the constellation Coma Berenices.

NGC 4565 is a giant spiral galaxy more luminous than the Andromeda Galaxy.Much speculation exists in literature as to the nature of the central bulge.

In the absence of clear-cut dynamical data on the motions of stars in the bulge, the photometric data alone cannot adjudge among various options put forth. However, its exponential shape suggested that it is a barred spiral galaxy.

NGC 4565 has at least two satellite galaxies, one of which is interacting with it. It has a population of roughly 240 globular clusters, more than the Milky Way."

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The Needle Galaxy (NGC 4565), 



    
        

            KuriousGeorge