NGC 7380 - 350D - Comparison With Atik HR16 - Added 16HR image

[jcm]

This image is taken with the 350D. Its 1 hour ( 15 X 4min ) at F6 and 800 iso. Its fairly faint so its not an easy object.

I hope to take the same object in the next few nights using the Atik 16HR and LRGB filters to compare with the 350D image.

added Atik 16HR image - 18/10/07

John

[SteelRat]

Good stars and detail, nice pic John.

Looking forward to seeing the Atik one soon though 8)

[CELESCOPE]

very nice image John , that one is not easy , thats performed well in my opinion , , not sure how much better the Atik would be , it will be interesting

Rog

[jcm]

very nice image John , that one is not easy , thats performed well in my opinion , , not sure how much better the Atik would be , it will be interesting

Rog

Thats why I chose it. I have a gradient removal tool but forgot to use it

I'm betting the Atik will be better but the total exposure ( LRGB ) will have to be more than 1 hour.

John

[Zeffer]

That's a lovely image - I really can't wait for the Atik version.

[barkis]

The DSLR has done a great job here. I am sure the Atik will produce a superior image, but I am not sure if it fair to compare the two.

It is a nice image in it's own right John.

Ron.

[jcm]

The DSLR has done a great job here. I am sure the Atik will produce a superior image, but I am not sure if it fair to compare the two.

It is a nice image in it's own right John.

Ron.

Yep , your probably right - but I thought it would be interesting just to compare the two.

John

[Kaptain Klevtsov]

I think its a very fair thing to do, after all, there are folks on the edge of imaging who want to spend the cash wisely. A description of the woes of each image would help as well, as I have an awful time gettng the Nikon to focus correctly.

Kaptain Klevtsov

[jcm]

I think its a very fair thing to do, after all, there are folks on the edge of imaging who want to spend the cash wisely. A description of the woes of each image would help as well, as I have an awful time gettng the Nikon to focus correctly.

Kaptain Klevtsov

The DSLR is sooooo.. easy to use. Just let it take 15 exp of 4 mins. Put into ImagesPlus , DDP - ImagesPlus finish off in PhotoShop - done!! ( well nearly that easy )

You have got to use a program like DSLR Focus or ImagesPlus or Astroart or Maxim etc thats got a focussing routine. Accurate auto guiding is important , I have the parameters calculated for different declinations so the guiding is spot on.

John

[Kaptain Klevtsov]

With a Nikon, you have to buy the control software before DSLR Focus will work, that's another £70. Why people buy these things is beyond me.

Kaptain Klevtsov

[jcm]

With a Nikon, you have to buy the control software before DSLR Focus will work, that's another £70. Why people buy these things is beyond me.

Kaptain Klevtsov

Oh I see - I forgot that most control stuff is designed to work with Canon cameras

John

[centroid]

You do achieve some very good results with that 350D John.

Am most interested to see the Atik results, as a direct comparison.

Dave

[MartinB]

Lovely image John. The FOV is huge. The Atik will be much closer in I guess but the noise levels will be interesting to compare

[jcm]

Ok- adding Atik 16HR image.

20 mins each for RGB , 40 mins Luminance. Rather strangely the auto guiding went a bit silly during the luminance frames - the telescope was pointing vertically and as it went passed the meridian the guiding went odd - some change in weight distribution ??

Added this image to the first so a comparison can be made.

Still need a lot more practice doing LRGB

John

[MartinB]

Well I think the stars look better with the DSLR but the neb is smoother with the Atik. What scopes were you using John. Guess you had to go very short f/l for the atik

[jcm]

I was working a F6 - perhaps the focus was not as good on the Atik image - I must admit I focused for the red frames and left the focus at the same position for the others. Also lots of haze on the night I did the Atik frames.

John