New Image: NGC 6543 "Cat's Eye"

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New Image: NGC 6543 "Cat's Eye"

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Post by jthommes »

This is a wide field image of NGC 6543 (a planetary nebula) showing a wider region with background galaxies and Quasars. It has several common names - "Cat's Eye Nebula", "Sunflower Nebula", and"Snail Nebula". NGC 6543 is about 4,455 light years distant. Within its structure is a bright knot with a designation of IC 4677; the central star has a designation of HD164963.

In the wider field are galaxies NGC 6552 and PGC 61111. These are at distances of about 357 and 360 million light years respectively. There are several other PGC galaxies in background and some fainter, smaller galaxies that can only be seen in the full size images. One of these galaxies, PGC 94832 is notable in that it lies at about 1.126 billion light years distant. One Quasar in the image, RX j17594+6638, has a very large redshift of 4.238 and a light travel time of 12.3 billion years.

The thumbnail image crop of NGC 6543 below links to the main page with image and additional information. There are also links below to the full FOV and annotated image. The full zoom image has vertical FOV of 0.636 degrees and an image scale of about 0.382 "/pixel.
Full FOV image (Pan and Zoom):
NGC 6543 'Cat's Eye'

Annotated Image (Pan and Zoom):
NGC 6543 'Cat's Eye' Annotated

Images also available on astrobin - NGC 6543 'Cat's Eye'

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Re: New Image: NGC 6543 "Cat's Eye"

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Post by Petrol »

That is spectacular and I was amazed this was done at f7. Over 15 hours of integration explains a lot though. The detail is amazing and thank you for sharing.
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Re: New Image: NGC 6543 "Cat's Eye"

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Post by messier 111 »

This image is extraordinary, the details, the colors.
thx .
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Re: New Image: NGC 6543 "Cat's Eye"

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Post by Graeme1858 »

That's beautiful Jim.

Your management of the bright star on the edge of the nebula is impressive too!
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Re: New Image: NGC 6543 "Cat's Eye"

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Post by sla&grim »

Outstanding image, Jim. This object is on my list too, but weather safeguarding it of me. One question to you: do you use Celestron FL reducer or different brand. I tried to use Celestron 0.7X + ESATTO 2" focuser and it makes imaging train quite heavy on camera side.
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Re: New Image: NGC 6543 "Cat's Eye"

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Post by MariusD69 »

Very impressive! Great work, Jim!!
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Re: New Image: NGC 6543 "Cat's Eye"

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Post by JayTee »

Needless to say, you do not disappoint! Amazing!

Thanks for sharing,
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Re: New Image: NGC 6543 "Cat's Eye"

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Post by KathyNS »

Superb detail and dynamic range!
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Re: New Image: NGC 6543 "Cat's Eye"

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Post by AstroBee »

Another spectacular image, Jim. Congrats.
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Re: New Image: NGC 6543 "Cat's Eye"

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Post by bernhardhubl »

Impressive result, Jim!

best,
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Re: New Image: NGC 6543 "Cat's Eye"

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Post by Gordon »

Congratulations Jim on having your image selected as our TSS APOD!

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Re: New Image: NGC 6543 "Cat's Eye"

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Post by AstroBee »

Nice! Congrats on the TSS APOD, Jim.
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Re: New Image: NGC 6543 "Cat's Eye"

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Post by StarHugger »

Excellent Jim, NGC6552 is interesting in itself.

Thanks again for sharing !
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Re: New Image: NGC 6543 "Cat's Eye"

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Post by jthommes »

sla&grim wrote: Wed May 22, 2024 7:29 am Outstanding image, Jim. This object is on my list too, but weather safeguarding it of me. One question to you: do you use Celestron FL reducer or different brand. I tried to use Celestron 0.7X + ESATTO 2" focuser and it makes imaging train quite heavy on camera side.
Thanks for your comment!

I do not use the Celestron reducer. I use the AP CCDT67 reducer. It works pretty well with the HD 9.25. I am also using the JMI Event Horizon focusr. The AP CCDT67 is a reducer in a 2" eyepiece frame. This fits into the focuser 2" receiver (and goes almost right up to the HD 9.25 rear glass. Using a conventional reducer like this requires you to maintain the 146 mm back focus for the HD 9.25. This is a 'virtual' back focus that is calculated based on the reduction. This is different from the Celestron reducer which uses its special optics to maintain the scopes required back focus while extending the back focus from the end of the reducer.

I use the smaller ASI294 camera sensor because, in my configuration, the image circle is reduced by the amount of reduction. But the Celestron reducer maintains the HD 9.25 full frame image circle while at the same time extending the back focus. Of course the consequence of the Celestron reducer solution is (as you say) very rear end heavy. To get balance, the OTA has to move up on the DEC saddle or you have to add balancing weights to the front end of the scope.
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Re: New Image: NGC 6543 "Cat's Eye"

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Post by jthommes »

Thanks for your comments, congrats, and kind words folks! They are much appreciated.
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Re: New Image: NGC 6543 "Cat's Eye"

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Post by Ylem »

Jim, that image is absolutely amazing!!!
Congratulations on the well deserved APOD 👏
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Re: New Image: NGC 6543 "Cat's Eye"

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Post by sla&grim »

I do not use the Celestron reducer. I use the AP CCDT67 reducer. It works pretty well with the HD 9.25....
"
Thank you Jim for your answer. I do have CCDT67 too and most of the time it seats on my Ritchie-Chretien 8". It works very good on it. Did not even think to try it out on Edge HD 9.25. For now, with Celestron 0.7X+focuser+cam+filter wheel+guide-scope/cam I balance the OTA with counterweight in front of it. CEM70 handles this weight (≈45 lb) quite well.
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Re: New Image: NGC 6543 "Cat's Eye"

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Post by jnelson »

Wonderful image Jim!

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Re: New Image: NGC 6543 "Cat's Eye"

#19

Post by yobbo89 »

''Using a conventional reducer like this requires you to maintain the 146 mm back focus for the HD 9.25. ''



how much reduction do you have at 146mm ? i have mine spaced for 0.75 x i think it was about 60-70mm back focus
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Re: New Image: NGC 6543 "Cat's Eye"

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Post by starfield »

Congrats on the APOD, Jim. No surprise. Such a great image.
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