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Jellyfish Nebula HOO Version
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Jellyfish Nebula HOO Version Dec 6, 2024 199 views7898×491748.8 MB

Jellyfish Nebula HOO Version
Comments
Roy Hagen Dec 6, 2024
Lovely colors, John
Always a beautiful sight in wide field!!

CS
John murphy Dec 7, 2024
thanks so very much here Roy
Dave Erickson Dec 6, 2024
Hi John,
Nice image, surprisingly wide field for a CDK24, is it a mosaic?
best, Dave
John murphy Dec 7, 2024
Thanks so very much Dave.  No sir it's straight data from Telescope Live.   I do. not know how to process mosaics yet
Dave Erickson Dec 7, 2024
Likely a 6 panel mosaic with a CDK24 that they assembled for you, your processing is nicely done!!

Here is what you get with a smaller 114mm aperture F/4 astrograph...
https://www.astrobin.com/85qzkr/
best regards, Dave
John murphy Dec 8, 2024
Dave, thanks.  Lovely  capture you have there.  All I can tell you is the data is listed as a single capture.  I did grab 6 bundles but all 96 FITS were of the same shape just different S, H, & O formats.  There are files on the lite listed as Mosiacs 1,2, 3   with different viewpoints.    I saw a picture of the CDK24 in Spain site.......   WOW that scope is huge. The one in Chile there is no reference to give a size.
Dave Erickson Dec 8, 2024
Hi John,
I have a CDK17 the field of view at F/6.8, focal length 2936mm. With a full frame sensor the field is 0.7degx 0.46 deg.  Field radius of your image is 2.6 degrees, that is 5.5 degreed diameter.




CDK24 has a focal length of 3962mm a single frame image would require a massive sensor that is more than 300mm in diameter to capture the 5.5 degree image presented above..

just saying the data is not a single frame from a CDK24
Dave
John murphy Dec 8, 2024
Dave..............   I just got my jaw off the floor.  Awesome!!    I am new and I get my data from a remote site "Telescope Live" so I have to take what they tell me at face value but it explains a lot.  Gives me the comparison of a matchbox to my car .    I have only been at this ~ 1 year so my 400mm f5/6 refractor is tiny compared to this.    

FYI  info from T Live
  • Pixel Array: 9576 x 6382 pixels
  • Pixel Resolution: 0.39 arcsec/pixel in BIN2
  • Model: QHY 600M Pro
  • Pixel Size: 3.76s μm
  • [*]
  • Model: Planewave CDK24
  • Aperture: 610 mm (24 inches)
  • Focal Length: 3962 mm
  • F-ratio: 6.5
  • Mount: Mathis MI-1000/1250 with absolute encoders
  • Minimum elevation: 30 degrees
  • [*]
Dave Erickson Dec 8, 2024
Hi John, Thank you. I have been at this for a long time, a lifes work in optics.
I understand you are presenting what you have been told is true in good faith. I suggest asking them to correct the error. They likely charge more for larger scope data, you may have a refund coming...

None of this detracts from the fine job you have done with this data, keep up the good work!
best regards, Dave
John murphy Dec 9, 2024
Thanks so much Dave!!   They only charge .1 credit more for this scope vs the 400mm refractor..  They have 2 of these one in Chile and one in Spain.  I will shoot them an e-mail and ask about this.  Thank you and thanks on the kind words on the processing.  Doing some of these allows me to keep my hand in Pixinsight while waiting on my other shots to process.
Dave Erickson Dec 9, 2024
Best of luck John...
Todd Charlson Dec 6, 2024
Very nice John!

CS
Todd
John murphy Dec 7, 2024
thank you so very much Todd!!  I. do apperiate the comments