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B343 - Dark nebula in Cygnus - LLRGB 4 hrs total exposure

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17 years 6 months ago #47668 by TrevorDurity
God Anthony I didn't think it possible but your images just get better and better!

big A3 format book, if you ever do, I'll be first on the list.

Now I'll second that!!! With all you the stuff you get published it would definitely do well.

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17 years 6 months ago #47676 by ayiomamitis
Gents,

A very big thanks for the kind words. There is so much stuff up there, one can be entertained for a few lifetimes. So much to do and so little time?!

Dave, I will look into the issue of star spikes in nebula images. I agree with you that they add an extra dimension to open cluster images and they may (?) not be appropriate for an image involving a nebula.

Anthony Ayiomamitis
Athens, Greece
www.perseus.gr

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17 years 6 months ago #47717 by mia
Anthony,

Such a beautiful image! I'm in awe! Just spent ages looking at it! Wonderful!

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17 years 6 months ago #47719 by phoenix
Absolutely brilliant image Tony. I looked at it and I thought you had used a H alpha to get so much red in it. Then I saw your exposure times. Send some of your weather our way please.

Dave, I will look into the issue of star spikes in nebula images. I agree with you that they add an extra dimension to open cluster images and they may (?) not be appropriate for an image involving a nebula.


I thought the star spikes detracted from the image purely because the image was about a dark nebula so they tended to draw the eye away from the intended subject.

Kieran
16" ODK (incoming), Mesu Mount 200, APM TMB 80mm, SXV H16, SXV H9
J16 An Carraig Observatory
ancarraigobservatory.co.uk/

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17 years 6 months ago #47720 by michaeloconnell
Superb image as always Anto. Again, I would agree with Kieran re the spikes.

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17 years 6 months ago #47733 by ayiomamitis
Michael et al,

I just finished an all-nighter with B143 in Aquila ... and with no spikes this time. I will have to put the CCD camera in the fridge later today to get my darks since the ambient temperature (30d C) during the evening was so high that I could not get below -2.5d C for the CCD chip ... what all of this means is a new set of darks prior to processing my data.

With all of this high heat, there was some haze and my FWHM was around 4.8" ... absolutely horrible ... but I am interested to see how things turn out.

Worse case scenario is that I will have a baseline image for this particular dark nebula to build from prior to a revisit for a reshoot.

Anthony Ayiomamitis
Athens, Greece
www.perseus.gr

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