CTB 1 - supernova remnant in Cassiopeia

[RickS]

I posted an image of CTA 1 a little while ago. Here's it's somewhat brighter brother, CTB 1.

Supernova remnant CTB 1 in Cassiopeia is the remains of a violently exploding star. It's approximately 10,000 light-years away and occurred between 7,500 and 11,000 years ago, shortly before I went to school.

Captured at SRO California, Aug-Nov, 2017.

Scope: Ceravolo C300 @ f/4.9 = 1470mm FL
Mount: AP1100
Camera: FLI PL16803
Filters: Astrodon
Image scale: 1.26 arcsec/pixel (Drizzled to double res)
Exposures: 11x300s R, 11x300s G, 11x300s B, 49x1800s Ha, 53x1800 Oiii, 55x1800s Sii (total: 81.25 hours)
Processing: PixInsight 1.8.5

Processing credit: Rick Stevenson
Acquisition credit: Scott Johnson, Augusto Hernandez, John Kasianowicz, Daniele Malleo, Jose Mtanous and Rick Stevenson

Bigger version on Astrobin: https://www.astrobin.com/full/334214/0/

[atalas]

:eyepop: :jawdrop: :2thumbs:

[RickS]

Thanks, Louie :lol:

[Andy01]

Wonderful image Rick!
Good onya for showing us something really new & different, exquisitely framed & processed too.
Top stuff :thumbsup:

[RickS]

Thanks, Andy. Very kind of you!

[Stevec35]

Absolutely beautiful Rick!

Steve

[Joshua Bunn]

Wow Rick! that's got punch, love the striking colours.

Josh

[batema]

Stunning Rick.

Mark

[strongmanmike]

Well, never seen this one before mate...striking and rather intriguing object Rick, lovely vibrant colours too... looks like the head of a sperm :P

Mike

[joelshort]

Stunning Rick. How did you map the filters/colors?

[gregbradley]

A magnificent image Rick.

Greg.

[RickS]

Thanks Steve, Josh & Mark!



Ta, Mike! I think the shell rupture at the top LHS adds to the resemblance.



Thanks, Joel. I mapped Ha as red, Oiii as Blue/Green (then mapped cyan to a more blue shade) and used Sii as a mask and reduced green. The Sii didn't really contribute a lot.



Thanks, Greg!

[multiweb]

Great shot. Looks like a giant jellyfish. :thumbsup:

[SimmoW]

Yes very dramatic and a rare one, onya Rick!

[troypiggo]

Lovely - the blue certainly adds to it.

[RickS]

Thanks, Marc. That's a bit more family friendly thank Mike's sperm :lol:



Thanks, Simon!



Ta, Troy. I always like to push the blue a bit :thumbsup:

[Paul Haese]

Nice Rick, very nice. Colour, detail and star colour. All good. :thumbsup:

[Ross G]

An amazing looking object and an amazing looking photo of it.

Beautiful work Rick!

I love the colours and detail.

Ross.

[Atmos]

Looks much like the Spaghetti Nebula you did a while back with the Rokinon 135mm :P
Faint sucker given the 80+ hours!

[RickS]

Thanks, Paul.



Thank you, Ross.



It does look a bit like that, Colin. Only much, much smaller! They were both very faint...

[OzEclipse]

Brilliant Rick.

Joe:thumbsup:

[marc4darkskies]

Fantastic Rick! Crisp detail and spot on colours. Gorgeous! :thumbsup:

Marcus

[RickS]

Thanks Joe & Marcus!