2022 Michael A. Siniscalchi

What's New



Odds n Ends

     NGC 4565
        Spiral Galaxy in Coma Berenices
      RA:12h 36m 50s  Dec: +25 53' 14" Distance - ~47 mly  Size- 15.9' x 1.85

Click on image for larger size
Location & Date
Backyard, Abbott Observatory- Long Island, NY,  April 2022
Orion ED80 F/7 APO, Moonlite focuser, iOptron GEM45G, Pegasus Falcon rotator
Image scale 2.54 arcsec/pixel
Baader L R G B  filters
CCD temp -15C
Lum- 18X5m  Red- 12x5m  Green- 12x5m  Blue-12x5m  Bin 1x1
Planning & Acquisition
Image acquisition - Sequence Generator Pro w/PinPoint & PHD2 (guiding)
CCDStack -  Calibration, Normalize, Alignment,  Deconvolution
Adobe PS -  LRGB combine, Color adjustments, Noise reduction, Sharpen, JPEG conversion
RC-Astro Star XTerminator
Topaz Gigapixel AI - galaxy details
From Wikipedia;
   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. It lies close to the North Galactic Pole and has a visual magnitude of approximately 10. It is known as the Needle Galaxy for its narrow profile. First recorded in 1785 by William Herschel, it is a prominent example of an edge-on spiral galaxy.

  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. Studies with the help of the Spitzer Space Telescope not only confirmed the presence of a central bar but also showed a pseudobulge within it as well as an inner ring.
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. NGC 4565 is one of the brightest member galaxies of the Coma I Group.
This edge-on galaxy exhibits a slightly warped and extended disk under deep optical surveys- likely due to ongoing interactions with neighboring satellite galaxies or other galaxies in the Coma I group.

A side by side comparison comparing the native galaxy resized to 2x and the detailed Topaz Gigapixel AI version.
The Gigapixel 2x version was resized down to its native size using Photoshop Preserve Details 2.0.