NGC 2174 or Monkey Head Nebula - Crop.
The full field of view from the camera: (Updated Nov. '22)
This is my first image with a CMOS camera. I regarded this initially as a test image as on the first night out with the camera I had cetain tests to complete before actually getting started. At a total exposure time of just 4½ hours - I had anticipated continueing to gather photons on subsequent nights. However - it is good enough as is and for me, has a certain relevance without further addition.
NGC 2174 (also known as Monkey Head Nebula) is an H II emission nebula located in the constellation Orion and is associated with the open star cluster NGC 2175. It is thought to be located about 6,400 light-years away from Earth. The nebula may have formed through hierarchical collapse.
There is some equivocation in the use of the identifiers NGC 2174 and NGC 2175. These may apply to the entire nebula, to its brightest knot, or to the star cluster it includes. Burnham's Celestial Handbook lists the entire nebula as 2174/2175 and does not mention the star cluster. The NGC Project (working from the original descriptive notes) assigns NGC 2174 to the prominent knot at J2000 06h 09m 23.7s, +20° 39′ 34″ and NGC 2175 to the entire nebula, and by extension to the star cluster. Simbad uses NGC 2174 for the nebula and NGC 2175 for the star cluster.
Imaging telescopes or lenses: Takahashi FSQ130ED
Imaging cameras: ASI 2600MM-P
Mounts: Takahashi EM 400 Temma 2M
Guiding telescopes or lenses: Takahashi FS60CB
Guiding cameras: QHY CCD QHY 5 II
Focal Extender / Reducer: None
Software: PHD 2, Pleiades Astrophoto PixInsight , Astro Pixel Processor (for stacking), Sequence Generator Pro SGP (for capture)
Filters: Astrodon Ha, SII & OIII
Accessories: SeleTEK2/Robofocus Focuser, ATIK EFW3
Original Resolution: 6237 x 4167
Dates: 30th Nov '21
Frames:
Astrodon Ha 9 x 10'
Astrodon SII 9 x 10'
Astrodon OIII 9 x 10'
Total Time: 4 Hours 30 Mins.
Center (RA, Dec): (92.414, 20.870)
Center (RA, hms): 06h 09m 39.267s
Center (Dec, dms): +20° 52' 13.011"
Size: 2.07 x 1.38 deg
Radius: 1.246 deg
Pixel scale: 1.2 arcsec/pixel
Orientation: Up is 270 degrees E of N
NGC 2174 (also known as Monkey Head Nebula) is an H II emission nebula located in the constellation Orion and is associated with the open star cluster NGC 2175. It is thought to be located about 6,400 light-years away from Earth. The nebula may have formed through hierarchical collapse.
There is some equivocation in the use of the identifiers NGC 2174 and NGC 2175. These may apply to the entire nebula, to its brightest knot, or to the star cluster it includes. Burnham's Celestial Handbook lists the entire nebula as 2174/2175 and does not mention the star cluster. The NGC Project (working from the original descriptive notes) assigns NGC 2174 to the prominent knot at J2000 06h 09m 23.7s, +20° 39′ 34″ and NGC 2175 to the entire nebula, and by extension to the star cluster. Simbad uses NGC 2174 for the nebula and NGC 2175 for the star cluster.
Imaging telescopes or lenses: Takahashi FSQ130ED
Imaging cameras: ASI 2600MM-P
Mounts: Takahashi EM 400 Temma 2M
Guiding telescopes or lenses: Takahashi FS60CB
Guiding cameras: QHY CCD QHY 5 II
Focal Extender / Reducer: None
Software: PHD 2, Pleiades Astrophoto PixInsight , Astro Pixel Processor (for stacking), Sequence Generator Pro SGP (for capture)
Filters: Astrodon Ha, SII & OIII
Accessories: SeleTEK2/Robofocus Focuser, ATIK EFW3
Original Resolution: 6237 x 4167
Dates: 30th Nov '21
Frames:
Astrodon Ha 9 x 10'
Astrodon SII 9 x 10'
Astrodon OIII 9 x 10'
Total Time: 4 Hours 30 Mins.
Center (RA, Dec): (92.414, 20.870)
Center (RA, hms): 06h 09m 39.267s
Center (Dec, dms): +20° 52' 13.011"
Size: 2.07 x 1.38 deg
Radius: 1.246 deg
Pixel scale: 1.2 arcsec/pixel
Orientation: Up is 270 degrees E of N
Sky Map
SII, Ha & OIII in the image
Annotated Image (Click on image to enlarge).
