Hemisphere:  Northern  ·  Constellation: Monoceros (Mon)  ·  Contains:  15 S Mon  ·  B39  ·  Christmas Tree Cluster  ·  NGC 2264  ·  Sh2-273  ·  The star 15Mon
Getting plate-solving status, please wait...
NGC 2264, 



    
        

            Gary Imm
NGC 2264, 



    
        

            Gary Imm

NGC 2264

Getting plate-solving status, please wait...
NGC 2264, 



    
        

            Gary Imm
NGC 2264, 



    
        

            Gary Imm

NGC 2264

Imaging telescopes or lenses: Takahashi TOA-130NFB

Imaging cameras: ZWO ASI 6200 MM Pro

Mounts: Astro-Physics Mach1GTO

Guiding cameras: ZWO ASI 174 MM Mini

Software: Adobe Inc Lightroom Classic  ·  Main Sequence Software Sequence Generator Pro  ·  Pleaides Astrophoto PinInsight 1.8  ·  Adobe Inc Adobe Photoshop CC 2021  ·  Stark Labs PHD2 2.6.3

Filters: Chroma Red 2" unmounted  ·  Chroma Ha 3nm  ·  Chroma Blue 2" unmounted  ·  Chroma Green 2" unmounted  ·  Chroma Luminance 2" unmounted

Accessory: ZWO M68 OAG  ·  ZWO EFW 2″X7  ·  Takahashi Flattener TOA-67  ·  Feathertouch Focuser Boss II Electronic Focusing Control


Dates:Feb. 9, 2021Feb. 10, 2021Feb. 11, 2021

Frames:
Chroma Blue 2" unmounted: 30x120" (gain: 0.00) -20C bin 1x1
Chroma Green 2" unmounted: 30x120" (gain: 0.00) -20C bin 1x1
Chroma Ha 3nm: 24x300" (gain: 100.00) -20C bin 1x1
Chroma Luminance 2" unmounted: 60x120" (gain: 0.00) -20C bin 1x1
Chroma Red 2" unmounted: 30x120" (gain: 0.00) -20C bin 1x1

Integration: 7.0 hours

Avg. Moon age: 28.23 days

Avg. Moon phase: 2.67%


Astrometry.net job: 4423353

RA center: 6h 40' 58"

DEC center: +9° 53' 43"

Pixel scale: 1.024 arcsec/pixel

Orientation: -2.611 degrees

Field radius: 1.199 degrees


Resolution: 7000x4694

Locations: Backyard (Mag 20.8 - Bortle 4.5), Onalaska, Texas, United States

Data source: Backyard

Description

This image contains a series of objects located in the constellation of Monoceros at a declination of +10 degrees. I have included an annotated image to assist in the description below. The primary objects in the image, from bottom to top, are the Cone Nebula, the Christmas Tree Cluster (NGC 2264), the bright multiple star system S Monocerotis, the Fox Fur Nebula, and Barnard 39.

What about Sh2-273? Sh2-273 is a broad emission nebula about 4 degrees wide. There is much confusion over the Sh2-273 designation. I have seen it assigned to many different things, including the Cone Nebula and the HII emission arc at the top right of the image. But this entire image is just a subset of the large Sh2-273 nebula.

The most spectacular object in the image is the Cone Nebula. Similar to the Pillars of Creation, the Cone Nebula is a 7-light-year-long gaseous star formation pillar silhouetted against glowing red gas.

The Christmas Tree Cluster (NGC 2264) is an open star cluster of 600 blue young stars ionizing the reddish hydrogen nebula. The NGC 2264 designation includes both the star cluster and the nebula. In the image, the "tree" points down.

I have also identified 9 of the many Herbig-Haro objects in the image. These objects are tiny red arcs that are jets of gas emitted from forming stars and shrouded in dust. From Wikipedia - "Herbig–Haro (HH) objects are turbulent looking patches of nebulosity associated with newborn stars. They are formed when narrow jets of partially ionized gas ejected by these stars collide with nearby clouds of gas and dust at speeds of several hundred kilometres per second. Herbig–Haro objects are ubiquitous in star-forming regions, and several are often seen around a single star, aligned with its rotational axis. HH objects are transient phenomena that last around a few tens of thousand years. They can change visibly over quite short timescales of a few years as they move rapidly away from their parent star into the gas clouds of interstellar space. The first astronomers to study them in detail were George Herbig and Guillermo Haro, after whom they have been named."

Comments

Revisions

  • NGC 2264, 



    
        

            Gary Imm
    Original
  • NGC 2264, 



    
        

            Gary Imm
    D

D

Description: Annotation

Uploaded: ...

Sky plot

Sky plot

Histogram

NGC 2264, 



    
        

            Gary Imm