Hemisphere:  Northern  ·  Constellation: Cepheus (Cep)

Image of the day 06/25/2022

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    The Valentine Rose, 



    
        

            Min Xie
      The Valentine Rose, 



    
        

            Min Xie

      The Valentine Rose

      Image of the day 06/25/2022

      Getting plate-solving status, please wait...
        The Valentine Rose, 



    
        

            Min Xie
          The Valentine Rose, 



    
        

            Min Xie

          The Valentine Rose

          Acquisition details

          Dates:
          April 21, 2021 ·  April 22, 2021 ·  April 29, 2021 ·  April 30, 2021 ·  Nov. 29, 2021 ·  Nov. 30, 2021 ·  Dec. 7, 2021 ·  Dec. 15, 2021 ·  Dec. 17, 2021 ·  Jan. 1, 2022 ·  Jan. 6, 2022 ·  Jan. 7, 2022 ·  Jan. 9, 2022 ·  Jan. 11, 2022 ·  Jan. 17, 2022 ·  Jan. 23, 2022 ·  Jan. 24, 2022 ·  Jan. 25, 2022 ·  Feb. 2, 2022 ·  Feb. 9, 2022 ·  Feb. 10, 2022
          Frames:
          Chroma 50mm Blue: 29×300(2h 25′) (gain: 0.00) -10°C bin 1×1
          Chroma 50mm Green: 32×300(2h 40′) (gain: 0.00) -10°C bin 1×1
          Chroma 50mm Ha 5nm: 138×600(23h) (gain: 100.00) -10°C bin 1×1
          Chroma 50mm Luminance: 90×300(7h 30′) (gain: 0.00) -10°C bin 1×1
          Chroma 50mm O-III 3nm (Optimized for f/3.0): 101×600(16h 50′) (gain: 100.00) -10°C bin 1×1
          Chroma 50mm Red: 37×300(3h 5′) (gain: 0.00) -10°C bin 1×1
          Chroma 50mm Sulphur-II 3nm: 126×600(21h) (gain: 100.00) -10°C bin 1×1
          Integration:
          76h 30′
          Darks:
          20
          Flats:
          20
          Bias:
          40
          Avg. Moon age:
          13.41 days
          Avg. Moon phase:
          54.03%
          Bortle Dark-Sky Scale:
          2.00
          Mean SQM:
          21.99
          Temperature:
          11.48

          Basic astrometry details

          Astrometry.net job: 5868445

          RA center: 23h49m48s.7

          DEC center: +81°0158

          Pixel scale: 1.878 arcsec/pixel

          Orientation: 104.165 degrees

          Field radius: 0.787 degrees

          Resolution: 2560x1599

          File size: 6.7 MB

          Locations: Dark Sky New Mexico, Animas, New Mexico, United States

          Data source: Own remote observatory

          Remote source: Dark Sky New Mexico

          Description

          SH2-174 (Sharpless 174) ranks as the most northern Sharpless object at 81 degrees north.

          SH2-174 / LBN598 is actually a Planetary Nebula. The best part of this target is the reflecting dust clouds surrounding it. SH2-174 is very dim and requires a lot of integration time. It does not have much striking structure either. The Sulphur-II channel is especially important for providing a few structural details. 

          Some very interesting read here - Planetary Nebula Sh2-174 | NOIRLab

          "Sh2-174 is an unusual ancient planetary nebula. A planetary nebula is created when a low-mass star blows off its outer layers at the end of its life. The core of the star remains and is called a white dwarf. Usually the white dwarf can be found very near the center of the planetary nebula. But in the case of Sh2-174 it off to the right. (It is the very blue star near the center of the blue gas). This asymmetry is due to the planetary nebula's interaction with the interstellar medium that surrounds it."

          This project started a year ago. On and off, it almost got abandoned because of the not-so-stellar narrowband data - and the almighty NSG script can't clean the gradients. Good thing is, SH2-174 is always there around the Polaris, even in the Galaxy season. That's why it is always used as the "filler" target when there are no other targets available for imaging.

          And here it is. Finally, the 70+ hours of data didn't get thrown away... 

          Clear Skies!

          #TeamNoctuaDSNM

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