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polaris_jerry

QHY23 first light image

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Hi

My first pic with the QHY23...and my first go at mono CCD imaging.  (DSLR until now)

LRGB - all 3 minute exposures (10 frames each filter).  Binned 2x2.

Jeremy

Got some M82 and Comet Lovejoy to process still...off to bed now though!

M81 LRGB 10x180s

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Hi Jeremy,

Execllent first pics from your QHY23. You should be well pleased at 

that image from so little data.

cheers

Steve

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Thanks Steve.  I was surprised how much came out with so little time.  

I was impatient on my first clear night.  I wanted to get M81 and M82, so decided to keep it shorter than I should.

I haven't processed M82 yet...will post when I do.

Jeremy

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Oh I forgot to ask anyone...

When you process mono filtered images, do you have to compensate for the QE of the camera when making an LRGB image?  

I factored the strength of each filter by the relative efficiency of red, green and blue QE on the camera.  I assumed that Luminance was 100% and then multiplied the RGB to compensate for the spectral response.

Is that right or not??

I have also done one with no compensation, but haven't finished processing it yet.

Thanks...

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Hi Jeremy

Regards colour balance, have a look at the attached pdf. It will give you an insight into 

what to set up.

cheers

Steve

color_balance.pdf

Edited by sloz1664
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Look great to me. Oh no another camera choice to consider. Will I ever actually take the plunge and decide?

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