Hemisphere:  Northern  ·  Constellation: Cygnus (Cyg)  ·  Contains:  NGC 6871

Image of the day 03/14/2017

Getting plate-solving status, please wait...
    Tulip Nebula (Sh2-101) and surrounding region including Cygnus X1, 



    
        

            Mike Oates
    Tulip Nebula (Sh2-101) and surrounding region including Cygnus X1
    Powered byPixInsight

    Tulip Nebula (Sh2-101) and surrounding region including Cygnus X1

    Image of the day 03/14/2017

    Getting plate-solving status, please wait...
      Tulip Nebula (Sh2-101) and surrounding region including Cygnus X1, 



    
        

            Mike Oates
      Tulip Nebula (Sh2-101) and surrounding region including Cygnus X1
      Powered byPixInsight

      Tulip Nebula (Sh2-101) and surrounding region including Cygnus X1

      Technical card

      Imaging telescopes or lenses: Takahashi FSQ-106 ED

      Imaging cameras: Starlight Xpress SX-814 Trius Monochrome CCD

      Mounts: Sky-Watcher EZ-EQ6 GT

      Guiding cameras: Starlight-XPress Lodestar Autoguider

      Software: Sequence Generator Pro  ·  Photoshop CS6  ·  PIXINSIGHT 1.8

      Filters: Astrodon 3nm OIII  ·  Astrodon 3nm SII  ·  Ha 3nm  ·  Red  ·  Green  ·  Blue

      Accessory: Lakeside Astro Motor Focus System  ·  Starlight Xpress SX 'Maxi wheel'  ·  Starlight Instruments FTF3545B-A Focuser


      Frames:
      Astrodon 3nm OIII: 52x1125" (16h 15')
      Astrodon 3nm SII: 61x974" (16h 30' 14")
      Blue: 43x60" (43') bin 1x1
      Green: 39x60" (39') bin 1x1
      Ha 3nm: 198x609" (33h 29' 42") bin 1x1
      Red: 31x60" (31') bin 1x1

      Integration: 68h 7' 56"


      Basic astrometry details

      Astrometry.net job: 1487900

      RA center: 20h 6' 30"

      DEC center: +35° 18' 21"

      Pixel scale: 1.435 arcsec/pixel

      Orientation: 359.863 degrees

      Field radius: 1.872 degrees


      Resolution: 9080x2411

      Locations: The Hills Observatory, Manchester, United Kingdom

      Data source: Backyard

      Description

      This started out as a 3 panel Ha panorama which I began in 2014 and I posted here on Astrobin the middle panel back in 2014 [https://www.astrobin.com/108237/?nc=user]
      Back then there were hardly any images showing the region to the east of the Tulip Nebula, but as it took so long others have since covered the same area. But I hope this image offers a more detailed view.

      There is an interesting object on the far right of the image next to the Tulip Nebula, Cygnus X1. The blue arc of gas/dust is produced by material jetting out of Cygnus X1 and interacting with other material in it's path.

      I have given the average sub exposure times above as they varied a bit. The average SQM-L for the whole 2 year period was 18.6 and never got better than 18.98 which is very rare. Being a 3 panel mosaic, the total integration time is high and quite a challenge and was imaged on 40 separate nights. I don't know how people manage to get mosaics larger than this as it takes a great deal of time. This is a 50% reduced size otherwise it would be a rather big download.

      I processed this mainly in Pixinsight, but moved over to Photoshop for the layer blending stage. Here I use the tone mapping method for the NB images and added RGB stars which were only made from 60s subs. Most of the OIII & SII subs were at bin2x2

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      Tulip Nebula (Sh2-101) and surrounding region including Cygnus X1, 



    
        

            Mike Oates