Author Topic: IC443, vdB 75, IC444 - 2x1 mosaic at feet of Castor in Gemini - HaRGB  (Read 389 times)

0 Members and 1 Guest are viewing this topic.

Roberto

  • O. A. S.
  • Star Class
  • *
  • Posts: 513
    • Astrobin
This one took a while to complete - from November to February.  The Jellyfish nebula at the feet of Castor.  Also shown is the blue reflection nebula van den Bergh 75 illuminated by 12 Geminorum.  IC444 is of dubious origin though as it does not seem to correspond to the index catalog object assigned to the coordinates.  The beautiful, bright, golden stars are Tejat Prior (Propus - a great double) and Tejat Posterior (Calx).

Details of acquisition can be found here:  https://www.astrobin.com/8qexuf/E/

Thanks

Roberto


RobertM

  • O. A. S.
  • Galaxy Class
  • *
  • Posts: 4455
Lovely image Roberto.

The triangle of the two yellow and the blue star contrast with and frame the nebulosity very well.

Robert




Roberto

  • O. A. S.
  • Star Class
  • *
  • Posts: 513
    • Astrobin
Thank you Robert!

Carole

  • O. A. S.
  • Galaxy Cluster
  • *
  • Posts: 8973
    • Carole's images
Very nice Roberto.

This is quite a large Nebula and needs a Mosaic which I presume you have done by the shape of the image.

Carole

Roberto

  • O. A. S.
  • Star Class
  • *
  • Posts: 513
    • Astrobin
Hi Carole

Thank you!  Yes, it's a 2x1 mosaic - only way to fit it all in.  I could have made a 2x2 to include an open cluster to the right of vdB75, but only managed to complete these two panels over 3 months...

Roberto

MarkS

  • O. A. S.
  • Galaxy Cluster
  • *
  • Posts: 7509
Wow - that is a great result!  An incredible 18 hours of data.

I like your subtle processing.  I imaged the same area this time last year and in comparison I feel my processing is rather harsh:  http://forum.orpington-astronomy.org.uk/index.php?topic=11960.0

Mark

Roberto

  • O. A. S.
  • Star Class
  • *
  • Posts: 513
    • Astrobin
Thank you Mark.  The amount of OSC data helped smooth the background a bit.  I also used the star reduction technique of Adam Block (using PixInsight) which gives more prominence to the nebulae as the field is full of beautiful - but very bright - stars.

Roberto