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Grant

IKO - NGC6888 Crescent Nebula Data Release - September 2020

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This is our second release of IKO data 🙂 More to follow very soon.

The small print:

  • We will be releasing all public data from the Ikarus Observatory project under a Creative Commons Attribution-NonCommercial licence. What this means is you are free to share, copy and redistribute the data as you see fit and adapt, remix, transform and build upon it but you must attribute 'Ikarus Observatory' as the source of the original data and must not use it for commercial purposes - i.e. no sticking images on the side of mugs and selling then :D

Beyond that, enjoy and have fun!

You can find out more about the IKO project here including details of the equipment used, observatory site etc.. This image was processed in the Pixinsight Weighted Batch Pre-Processor and comprises:

  • Ha - 80 x 20 mins
  • OIII - 80 x 20 mins
  • SII - 80 x 20 mins
  • Bias 101x
  • Flats 21x for each filter
  • Darks 21x 20 mins

These have been stacked and calibrated in Pixinsight. The raw XISF, FITS or TIF files can be downloaded here.

Details of the processing competition are here.

I hope you enjoy playing with the data and we look forwards to sharing more very soon!

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Fantastic data once again, thank you!

One interesting thing I've noticed while processing is what seems to be some kind of faint diffraction pattern around certain (bright) stars in Oiii. Any ideas what might cause this? It looks a little reminiscent of the ASI1600 microlensing pattern but I've not seen anything like this on a CCD before.

image.png.4d397e4427001d736e94ae71154d9515.png

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On 27/09/2020 at 20:45, Spongey said:

Fantastic data once again, thank you!

One interesting thing I've noticed while processing is what seems to be some kind of faint diffraction pattern around certain (bright) stars in Oiii. Any ideas what might cause this? It looks a little reminiscent of the ASI1600 microlensing pattern but I've not seen anything like this on a CCD before.

 

I see this on both my Esprit 100 and FMA180 refactors with the ASI1600mm pro, it probably is some interaction with the pixel grid. I note that I only ever seem to see in in very long / deep integrations. Not something to worry over at any rate, I quite like the effect. 

Adam

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