Hemisphere:  Northern  ·  Constellation: Taurus (Tau)  ·  Contains:  112 bet Tau  ·  12.20  ·  125 Tau  ·  136 Tau  ·  139 Tau  ·  203 Pompeja  ·  22 Aur  ·  26 Aur  ·  Alnath  ·  El Nath (βTau)  ·  PK178-02.1  ·  PK181+00.1  ·  Sh2-240  ·  Sh2-242  ·  The star 125Tau  ·  The star 136Tau  ·  The star 139Tau  ·  The star 26Aur  ·  The star Elnath
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The Spaghetti Nebula, aka Sh 2-240 or Simeis 147, 


            Patrick Hsieh
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The Spaghetti Nebula, aka Sh 2-240 or Simeis 147

Imaging telescopes or lenses: William Optics RedCat 51 Petzval APO

Imaging cameras: ZWO ASI6200MM-PRO

Mounts: Astro-Physics 1100GTO-AE

Software: Photoshop CS6  ·  Pleiades Astrophoto Pixinsight 1.8

Filters: Chroma 3nm Ha, Oiii, Sii

Dates:Dec. 21, 2020

Frames: 33x600"

Integration: 5.5 hours

Avg. Moon age: 6.93 days

Avg. Moon phase: 45.19%

Astrometry.net job: 4106951

RA center: 5h 40' 57"

DEC center: +28° 6' 15"

Pixel scale: 3.123 arcsec/pixel

Orientation: 178.864 degrees

Field radius: 4.991 degrees

Resolution: 9576x6388

Locations: Las Vegas, Las Vegas, NV, United States

Data source: Traveller


Sharpless 2-240 (Simeis 147), also known as the Spaghetti Nebula. This was a test run for a number of changes, including to see how well the corners held up with the full-frame ASI6200 on the RedCat 51, using Remote Desktop running on a Chromebook to remote in to the imaging computer over WiFi, and the new multi-star guiding in the PHD2 dev release. This is H-a only, there was a nearly 50% moon nearby, so have to go back and grab RGB and maybe Oiii at a later date. Background was noisier than I would have liked, will probably bump up the exposure to 15 min for the next run. It looks like I have a bit of sensor tilt from left to right, left side stars look out a bit.


Sky plot

Sky plot


The Spaghetti Nebula, aka Sh 2-240 or Simeis 147, 


            Patrick Hsieh