Celestial hemisphere:  Northern  ·  Constellation: Monoceros (Mon)  ·  Contains:  NGC 2237  ·  NGC 2238  ·  NGC 2239  ·  NGC 2246  ·  NGC 2252  ·  Rosette A  ·  Rosette B  ·  Rosette Nebula  ·  The star 12Mon

Image of the day 02/05/2021

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    Rosette Nebula  (Caldwell 49) SHO + RGB stars, Jian Yuan Peng
    Rosette Nebula  (Caldwell 49) SHO + RGB stars
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    Rosette Nebula (Caldwell 49) SHO + RGB stars

    Image of the day 02/05/2021

    Getting plate-solving status, please wait...
      Rosette Nebula  (Caldwell 49) SHO + RGB stars, Jian Yuan Peng
      Rosette Nebula  (Caldwell 49) SHO + RGB stars
      Powered byPixInsight

      Rosette Nebula (Caldwell 49) SHO + RGB stars

      Equipment

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      Acquisition details

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      Description

      Rosette Nebula is always my favorite object during the winter. I just can't stop myself to slew the telescope to this Rose. We got about 8 days of the OK night sky during the first two weeks of January in the SF bay area. I was able to collect a reasonable amount of data.

      Ha, OIII, and SII narrowband filters presented in the Hubble color palette plus the natural star color using R, G, and B filters.

      Technical details:

      Telescope: TEC 160FL + Astro-Physics 0.72x Quad Telecompressor Corrector

      Mount: Astro-Physics Mach 2 GTO

      Imaging cameras:ZWO ASI6200MM

      Software: PHD2, PixInsight, Lightroom 6.4, Sequence Generator Pro, Photoshop CS6

      Location: Palo Alto, California, USA

      PhotometricColorCalibration data:

      Resolution ............... 0.958 arcsec/px

      Rotation ................. -179.230 deg

      Observation start time ... 2021-01-14 03:32:19 UTC

      Observation end time ..... 2021-01-21 10:27:35 UTC

      Focal distance ........... 809.31 mm

      Pixel size ............... 3.76 um

      Field of view ............ 2d 30' 7.9" x 1d 39' 2.4"

      Image center ............. RA: 6 32 34.293 Dec: +4 56 00.63

      Image bounds:

      top-left .............. RA: 6 27 30.708 Dec: +4 07 27.16

      top-right ............. RA: 6 37 32.424 Dec: +4 05 24.24

      bottom-left ........... RA: 6 27 35.404 Dec: +5 46 28.70

      bottom-right .......... RA: 6 37 38.619 Dec: +5 44 25.47

      Filters: Astrodon 50mm Unmounted LRGB Gen2 E-Series Filter Sets

      Astrodon 50mm Unmounted 3nm Narrowband Ha, SII, OIII filters

      Blue 31x60" 11x120" 53 Minutes Bin1x1 1/14/2021, 1/20/2021

      Green 31x60" 11x120" 53 Minutes Bin1x1 1/14/2021, 1/20/2021

      Red 31x60" 11x120" 53 Minutes Bin1x1 1/14/2021, 1/20/2021

      Ha 43x900" 6x1200" 12.75 Hours Bin1x1 1/14/2021 ~ 01/21/2022

      OIII 45x900" 5x1200" 12.9 Hours Bin1x1 1/14/2021 ~ 01/21/2022

      SII 42x900" 6x1200" 12.5 Hours Bin1x1 1/14/2021 ~ 01/21/2022

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      Rosette Nebula  (Caldwell 49) SHO + RGB stars, Jian Yuan Peng