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Very nice. Only seen M17 myself once from here in the UK low down in the South -- and that visually from a dark sky site in south devon. Tim

Nice field to pick and capture Menno. Tim PS By coincidence --or maybe just that it is the season for the trio ..there is a post from Jeffbax Veloceraptor -- I think part of a French consortium on Astrobin - imaging the same Draco galaxy trio -- but who I think have access to a monster telescope and...

Just to add a 5 day later observation of the same thing - This is from Bracknell - Thames valley UK combining 197 x 40s luminance frames (F4 12 inch telescope, 2.415 u pixel size AS1294MM) on the nights of 25 and 26 May 2023. The luminance was added to a colour image from last year (just thought it ...

Thanks Dave , Well at least I can console myself with the fact that down here in the deep south at 51.5 degrees the astro-twilight is only about 6-7 weeks. As I think you have seen I reworked the original image to take advantage of more of the data acquired (as per my note to Robin) and put it onto ...

Robin [Interesting that the deconvolution worked best with a larger number of total frames - my suspicion is that it will be related to the lower noise level if you stack more frames. Sharpening algorithms of all kinds tend to be limited in how much sharpening can be used by the noise level of the ...

Hi Doug,

It is really impressive to see measurements like these and the level of accuracy - research paper stuff less than 30 years ago - now accessible to amateurs. Well done and thanks for writing it up here.

Tim

Bortle 7 skies (partly astronomical twilight) VX12 300 mm F4 Newtonian Ioptron CEM70 mount AS1294 MM camera. ZWO RGB filters. RGB captured with 4.63 uM pixels (0.81 arcsec/pixel). Luminance with unlocked 2.315 uM pixels (0.405 arcsec/ pixel) Unsteady skies (PHD2 guiding no better than 1.3 to 2 arcse...

Really exciting to see that. well done, I use SC the same way. Even on the worst nights you can leave it running using the filters in livestack and still capture things.
Tim

Wow. That is very clear.
Tim

That is an excellent image Menno. Well resolved with good colour as well as deep.
Tim