NGC6888 Crescent Nebula

[Aza]

Hi

Here are 2 versions of the Crescent Nebula.

One is with my Atik 16IC using the Ha filter.

The other is using my newly modded 400D.

From the comparison it appears that the modded 400D produces excellent results,

as there is not a whole lot more detail showing in the Ha version.

However the Atik is not the most sensitive chip, and my processing skills are very limited

Atik - 18 x 20 mins (6 hours)

400D - 13 x 20 mins (4 hours)

Cheers

(Viewing these images look really rubbish on one of my monitors, but on my other they look much better, hopefully they look OK on yours!)

[Whippy]

Arran, which one is which? Top one is the DSLR and the bottom is the Atik?

Tony..

[GazOC]

Tony......

They both look fine on my monitor, esp. the DSLR, the colour and the framing make all the difference IMHO.

[Aza]

Unfortunately the Atik isnt quite big enough with my set up to pick up the full crescent.

This is the first time I have viewed my images on a different monitor, I suppose when you process for one calibrated monitor, its bound to look a lot different on another one.

[Whippy]

Gaz,

To my eyes, the Atik version has far more 'body' to it than the DSLR version. Saying that though, neither are too shabby . If your eastern horizon is good and you don't mind waiting a while for it to come up, NGC 1579 in perseus is a pretty small emission nebula that'd fit well on your camera's chip.

Tony..

[Aza]

Thanks Tony I shall check that one out.

There is not a lot that will fit on the Atik using an 8 inch Newt, well not most of the things I would like to image.

[LostNSpace]

Great captures Gaz, its a shame you cant get the crescent all in with your atik though.......

Mark

[Psychobilly]

Nice captures Arran

I think my modded 350D is going to save me spending on a cCD . filters and wheel for a while as its just so convenient and the larger senosr size certainly help with the bigger taragets...

Now where did i put my cloud filter... getting severe withdrawl symptoms again...

Billy...

[Tim]

Nice, really nice. I prefer the DSLR, but then I would

It'd be interesting to see the 400D's image cropped to the same Crescent size as the Atiks, then desaturate and compare the finer details..

I'd be tempted to take the Ha data, selectively cut and paste it as a new layer into the DSLR pic, and use it to increase the luminosity of the crescent, but i'm not sure it really needs it, as the canon has done a fine job on its own.

TJ

[glennbech]

Did you really do 20 minute subs with the DSLR?

... And please goto NGC 1333 in perseus for a small and very interesting target -)

[Aza]

Thanks Billy, I am starting to agree! Although I do really want a much more sensitive CCD.

However modding a DSLR really seems to make a huge difference

Glenn these are 20 minute subs, I have been increasing from 10 to 15 and now 20.

I think next time I am gonna try my luck with 30 mins.

TJ below is the full size crop, desaturated.

I did try adding the data as luminosity, but it did not make any major improvements.

[trudie]

Both nice images,

Trudue

[Beyond_Vision]

I love the widefield DSLR shot Arran the Crescent looks great against the back drop of stars

Regards

Kevin

[Aza]

Thanks Trudie and Kevin.

I do like using the DSLR, its good to see the targets in their natural setting