Hemisphere:  Northern  ·  Constellation: Coma Berenices (Com)  ·  Contains:  IC 3571  ·  IC3571  ·  NGC 4562  ·  NGC 4565  ·  NGC4562  ·  NGC4565  ·  Needle Galaxy  ·  PGC1760893  ·  PGC1762205  ·  PGC2793674  ·  PGC3096166  ·  PGC42038
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NGC4565 The Needle. Beautiful as always, 



    
        

            Vitali
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NGC4565 The Needle. Beautiful as always

Imaging telescopes or lenses: Celestron EdgeHD 11

Imaging cameras: ZWO ASI071MC Pro

Mounts: 10Micron GM1000HPS

Software: Starkeeper Software Voyager  ·  PixInsight

Filters: Baader UV/IR-Cut/L 2"

Accessory: PrimaluceLab Sesto Senso focuser motor  ·  Baader SC/EHD Diamond Steeltrack


Dates:April 24, 2020

Frames: 984x120"

Integration: 32.8 hours

Avg. Moon age: 1.26 days

Avg. Moon phase: 1.79%


Astrometry.net job: 3539420

RA center: 12h 36' 19"

DEC center: +25° 57' 57"

Pixel scale: 0.351 arcsec/pixel

Orientation: -1.293 degrees

Field radius: 0.261 degrees


Resolution: 4500x2900

Locations: Rooftop terrace, Near Stuttgart, Germany

Data source: Backyard

Description

My favourite galaxy. It seems to me that it does not matter how you image it, it looks magnificent everytime.

It was the first galaxy I've tried to image with the EdgeHD almost two years ago (only 2 hours exposure and seriously out of focus). I still use this first image as my avatar.

Apparently the Needle is very similar to the Milky Way in size and appearance and our galaxy would look like this if seen from the same angle.

I've tried to show both the bright core, which shines through the central bulge, and the dim halo above and below the galaxy disc.

This image consists of 984 unguided exposures 120 seconds each. I've gathered the data during the last two new moon periods in March and April.

I have to take a lot of images because the light pollution is rather strong here (center of a small town). I would estimate the sky conditions between Bortle 6 and 5.

Pixinsight Photometric Color Calibration process has been used for this image. Sharpening was done with Multiscale Linear Transfer.

Revision B is the same image without any sharpening or noise reduction. Only stretch and color saturation has been applied.

Thanks for looking!
Vitali

Links:
NGC4565 in the Celestial Atlas by C. Seligman

Comments

Revisions

  • Final
    NGC4565 The Needle. Beautiful as always, 



    
        

            Vitali
    Original
    NGC4565 The Needle. Beautiful as always, 



    
        

            Vitali
    B
    NGC4565 The Needle. Beautiful as always, 



    
        

            Vitali
    C
    NGC4565 The Needle. Beautiful as always, 



    
        

            Vitali
    D
    NGC4565 The Needle. Beautiful as always, 



    
        

            Vitali
    E

B

Description: No deconvolution, no sharpening, no noise reduction. Practically raw data :)

Uploaded: ...

C

Description: The best 120 seconds frame, integration result and the final image. Downsampled 4x.

Uploaded: ...

D

Description: Reprocessed from scratch with focus on the galaxy rather than galaxy+background. Rotated in PixInsight. I think that such view reveals the galaxy disc a bit. :) Also it makes more obvious that the galaxy is warped.

Uploaded: ...

E

Description: (Over?)saturated version. Usually I'm very conservative with applying color saturation, so this revision is an experiment. 32 hours integration time allows to saturate a bit more. Actually most people I've asked preferred this saturated version.

Uploaded: ...

Sky plot

Sky plot

Histogram

NGC4565 The Needle. Beautiful as always, 



    
        

            Vitali