Vela SNR

[matlud]

Hi all,

This was a project I did a few months ago at the start of the night while I was waiting for my main target to get to a suitable altitude.

https://www.iceinspace.com.au/forum/attachment.php?attachmentid=279628&stc=1&d=1629586517
Astrobin: https://www.astrobin.com/alpin4

We are all familiar with the famous Vela SNR, however this field of view actually encompasses 3 separate SNRs. The Vela SNR is responsible for the majority of the visible shockwave filaments in this field. The Vela SNR is located about 800 lightyears from Earth, making it one of the closest SNRs, and it is thought to have occurred 11000-12000 years ago. As a results, its shockwaves have slowed to ~100-280 km/sec resulting in the prominent OIII and Ha emission. Towards the top right is the Puppis A SNR, which is much more distant. At the bottom left, near the pencil nebula, there is the Vela Jr or RX J0852.0-4622 SNR. This was discovered in 1998 and is thought to be ~650 light years away. It is thought to be very young, possibly as little as 680 years old! As a result, the Vela Jr shockwave speeds are >3000 km/sec so it is mainly visible in x-ray and gamma ray. The edges of the Vela Jr SNR has numerous molecular gas clumps which are visible at radio wavelengths. One such clump of CO emission matches closely to a visible OIII filament, that has been named the Vela claw. This relationship raises the possibility that this OIII emission may be associated with the Vela Jr SNR rather than the main Vela SNR.

An annotated version showing the approximate location of the three SNRs, and the Vela claw structure:

https://www.iceinspace.com.au/forum/attachment.php?attachmentid=279629&stc=1&d=1629586517
Astrobin: https://www.astrobin.com/alpin4/B/

A Hubble palette SHO version of this image:

https://www.iceinspace.com.au/forum/attachment.php?attachmentid=279630&stc=1&d=1629586517
Astrobin: https://www.astrobin.com/alpin4/C/

Technical:
Nikon 200mm f2 @ f2
ASI6200MM Pro
Chroma SHO 8nm
Rainbow Astro RST-135 mount
Location: Dunedin, NZ
Exposure 8.3 hour: OIII 175min, Ha 160min, SII 135min, RGB 30min

Cheers,
Mat

[multiweb]

Beautiful field and colors.:thumbsup: Massive.

[AdamJL]

Excellent. I saw a similar presentation from another kiwi photographer a few months ago and was blown away. This is as good. Incredible, I love these wide field shots

[Benjamin]

Beautiful image. Love both versions, although I do like the more complex SHO palette :-)

[Retrograde]

This is really cool - great work Mat!

[Peter Ward]

Excellent framing, great colour and technique. What a delightful result.
Nice one :thumbsup::thumbsup:

[kosborn]

That's a great image. Wonderful detail in the filaments of the SNR.

[vlazg]

Excellent again Matthew, the detail and processing are immaculate, really like both of them

[matlud]

Cheers Marc. It certainly is massive, like the giant beating heart of the Gum Nebula 😀



Thanks Adam, glad you liked it 👍



Thanks Ben. I couldn't decide what palette worked best so ended up doing both, but agree the SII does add some nice additional variation to some of the areas.



Thanks Pete!

[Andy01]

Wow! :eyepop:

You didn't leave anything on the table there! :thumbsup:

Congratulations, the HST version is likely the finest I've seen of the entire region! :bowdown::bowdown::bowdown:

[markas]

Great images, and interesting write-up. Splendid:thumbsup::thumbsup:
Mark

[gregbradley]

Stunning. Love it. My favourite southern area of sky.

You had no problem mounting a lens onto a filter wheel with the 6200?

Greg.

[matlud]

Thanks Peter, I'm glad you liked it. I was very pleased with how this one turned out 👍



Cheers Kevin! I was really happy with the sharpness/detail of the fine filaments given the FOV. I processed this without any star removal, as I find this tends to make a bit of a mess of the very fine details which is a major part of this image.



Thanks George, much appreciated 😀

[matlud]

Wow thanks Andy! I was really happy with how this all turned out, it was nice with the FOV to have a bit of room to breath around the massive SNR. Cheers, Mat



Thanks Mark! its a fascinating area for sure.



Cheers Greg. I used the astromechanics adapter for the ASI6200mm/filter wheel and then used a Canon EF to Nikon F adapter for the lens, which has worked well. It did take a lot of fine adjusting to tame tilt etc, as we are all finding the large sensor size and small pixels of the IMX455 really takes no prisoners 😂

[DavidTrap]

That is very impressive - inspiring! The detail you've achieved across such a large piece of sky is amazing.

I imaged a small portion of that region 2 years ago with a 4/3 sensor. Looking forward to heading back there with a bigger sensor, but I'll still need multiple panes with my rig to get anything like what you've produced.

Kudos!

DT

[Spookyer]

Top notch stuff. Very inspiring.

[strongmanmike]

An excellent wide field image, of a lovely area of sky Matthew :thumbsup:

A great imaging rig too BTW, I assume that is the full frame FOV and not a mozaic?

Mike

[matlud]

Thanks David!



Cheers Brett 👍



Thanks Mike, appreciate it. You are correct -the image is just the single frame covering ~10.5° x 7° 😀

[kosborn]

Congratulations on the IOTD. Well deserved!

Kevin

[marc4darkskies]

Wow Mat! One to write home about! Excellent! :thumbsup::thumbsup:

[matlud]

Thanks Kevin, much appreciated 👍

[matlud]

Cheers Marcus, was really happy with how it all came together 😀