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M51 from tonight 03.03.2013


Graham
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Finally got the ST 80 to focus tonight.


This caused another set of problems with PHD.


Where it would calibrate in 20 - 30 steps with my old set up with the ST 80 it took just 5 steps.


Solution was to reduce the calibration pulses down from 3500 to just 750.


 


Any way once that was sorted I set about M 51.


 


Although it looked really clear the seeing turned out to be pretty terrible.


I managed to use just 23 of the 55 subs.


Only after I had packed up I discovered the power to the dew heaters had died just to add to the problems.


 


Helios 200 Newt.


Canon 350 D modded.


 


23 - 180 second subs at ISO 800


11 Darks.


21 Flats.


 


Stacked in DSS


Light process in PS 6.


 


 


M51-03.03.2013.jpg


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Very nice.


You've got a lot of background noise from stretching the histogram.


I went from the ST80 guiding to finderguider and the calibration takes 32 steps!! going to have to tweak that....


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Couldn't resist playing -


gallery_16_38_242109.jpg


Made a duplicate, clone tool to blank out the galaxy in the duplicate, gussian blur (130), slight darken in curves, then screen mode blending at 90%, flatten image and slight curves applied.


Edited by andyboy1970
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Andy I have no idea what you did but it looks great. :thumbsup:

I said what I did under the image........

Have a try just make sure the duplicate is the one you mess with...

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Andy I read what you put under the image but I am afraid it might as well be in Chinese as I have no idea what you did or how to do it.


Not got that far in processing yet.


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Whats causes the dohnuts when zoomed ?

Pat

The focus is ever so slightly out which is noticeable when zoomed right in, but the overall image is great.

One thing that got me was the lack of diffraction spikes for a Newt image....

Edited by andyboy1970
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The focus is ever so slightly out which is noticeable when zoomed right in, but the overall image is great.

One thing that got me was the lack of diffraction spikes for a Newt image....

The ST80 isn't a newt :lol: you should know that, you have one yourself

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