An experiment at ISO 6400 IC 4606, 4607 and M17.

[tilbrook@rbe.ne]

Hi,

I recently image NGC 6744 and comet Siding Springs at ISO 6400 and was surprised at the result.
I chose M17 and surroundings as the test.

Well I'm even more surprised, it's come up well.:)

This is 28 x 2 minute subs at 6400, I did 5 x 2 minute ISO 800 for the core of the nebula.
Surprising lack of noise.
I did use the cooler box as it was reasonably warm, which has effected the stars due to the weight of the cooler which has flexed the coma corrector.
I know it's this now as I've recently beefed up the focuser and there's no flex there.

Anyway I'll be using ISO 6400 more in future.

8" F/4 astrograph HEQ pro 5 mount. Orion mini guider.

Unmodded canon 1100D, baader type III coma corrector.

28 x 2 minute subs, ISO 6400 and . Stacked in DSS, processed in Photo shop Cs2..


Cheers,

Justin.

[RickS]

Another nice one, Justin!

[multiweb]

Great colours. :thumbsup:

[rustigsmed]

Looks great!

[Stevec35]

Another keeper Justin. Colour balance and everything else looks just about perfect

Cheers

Steve

[gregbradley]

Wow, that's superb. Love the colours and the subtle misty reflection nebulas.

You've got a nice formula there.

Greg.

[cometcatcher]

That's really deep. Looking forward to more shots with those settings.

[Paul Haese]

Very nice work Justin. I really like the star colours. Detail is great and whole field is beautifully rendered. Well done.

[Ross G]

A great looking photo Justin.

Nice detail and I love the colours.

Your processing is excellent!

As to using 6400 iso, when I was imaging with my Canon 350d and 1000d, I found that varying the iso from 400 to 1600 made very little difference to the final photo.

Ross.

[tilbrook@rbe.ne]

Thanks Rick!:thumbsup:



Thanks Marc!:thumbsup:



Thanks Russell! :thumbsup:





Thanks Greg!:thumbsup:

Yep like this formula!:)
Can't wait to get amongst some challenging targets.



Thanks Kevin!:thumbsup:



Thanks Paul!:thumbsup:

Glad you like it.




Thanks Ross!:thumbsup:

Yes I was surprised how little difference there is to lower ISO images.
I was always reluctant to use the bogey man of ISO's.:scared:
Not now it's my new best friend.:)

Cheers,

Justin.

[LewisM]

Really got a depth to it. LOVE the colours. WELL done.

[Shiraz]

that's really good Justin - whatever you are doing, keep it up.

[marc4darkskies]

That's one of the best colour renditions of this object I've seen for a long time Justin. Lovely depth and nuance to the colour and very natural looking - nice job! :thumbsup:

Cheers, Marcus

[tilbrook@rbe.ne]

Thanks Lewis!:thumbsup:



Thanks Ray!:thumbsup:

Always fun when a experiment works out. :)




Thanks Marcus!:thumbsup:

I'm working more with the colours from the camera, it seems to be working well.

Cheers,

Justin.

[nebulosity.]

Great stuff Justin! I was wondering when you would discover ISO 6400 ;)

Jo

[tilbrook@rbe.ne]

Thanks Jo!:thumbsup:

Yep always thought 6400 was the bogey man of ISO's.:scared:

Cheers,

Justin.

[SimmoW]

yes a lovely field. Now do the same at 800 and show us the difference :)

[tilbrook@rbe.ne]

Thanks Simon!:thumbsup:

I have some ISO 1600 data I will post later, I've also combined it with my 6400 image which I'll also post.

Cheers,

Justin.

[marco]

I would sey experiment perfectly concluded, a great M17, almost difficult to believe it was obtained with an unmodded camera!

Cheers
Marco

[atalas]

Nice Justin.

[tilbrook@rbe.ne]

Thanks Marco!:thumbsup:

There's quite a lot of data in a single 2 minute ISO 6400 sub, dark skies really help.



Thanks Louie!:thumbsup:

Cheers,

Justin.