M42 - The Orion Nebula - DSLR

[Dave Smith]

I've not tried it with my ATIK314L+, looks like I may not bother.

I think that is down to me not focusing properly in the first place

Dave

[Gina]

So what's the focal length and aperture of your scope + field flattener, Dave? Please

[ianaiken]

Personally I would do narrowband on the atik and combine colour from the osc. Im trying to do horsehead using this approach but the clouds....

The focus does look a bit out may explain the softness.

[Ewan]

Really nice shot there Dave, i too am thinking of getting a modded Canon as i can't bring myself to mod the 600D seems like it would be a wise choice me thinks.

[Dave Smith]

So what's the focal length and aperture of your scope + field flattener, Dave? Please

That is surprisingly a tricky question. The scope is marked 90mm aperture f6.9 FL621mm, but it seems that WO made a mistake and I believe it is 90mm aperture, FL 558 f6.2

It is the latter figures that I use in CCD calc and it seems ok, but I've never been bothered enough to try and measure it. It is the mark 1 model. The field flattener has no effect on the focal length.

Dave

[Dave Smith]

Really nice shot there Dave, i too am thinking of getting a modded Canon as i can't bring myself to mod the 600D seems like it would be a wise choice me thinks.

Thanks Ewan. Why don't you want to have your 600D modded? If you go for filter replacement it can still be used for normal photography as long as you do a custom white balance.

Dave

[Dave Smith]

Personally I would do narrowband on the atik and combine colour from the osc. Im trying to do horsehead using this approach but the clouds....

The focus does look a bit out may explain the softness.

Yes I've done that with the Horsehead and the Dumbell nebula using the colour from earlier DSLR images. It works well.

Dave

[Andymac79]

Really nice. Always enjoy your images

[Gina]

That is surprisingly a tricky question. The scope is marked 90mm aperture f6.9 FL621mm, but it seems that WO made a mistake and I believe it is 90mm aperture, FL 558 f6.2

It is the latter figures that I use in CCD calc and it seems ok, but I've never been bothered enough to try and measure it. It is the mark 1 model. The field flattener has no effect on the focal length.

Dave

Thanks Dave That sounds quite similar to my ED80 so I'll use that.

[Dave Smith]

Really nice. Always enjoy your images

Thanks Andy.

Thanks Dave That sounds quite similar to my ED80 so I'll use that.

Yes I used to have an ED80 - they are very similar.

Dave

[petercoxphoto]

Very nice image there!

[Dave Smith]

Thanks Peter

Dave

[petercoxphoto]

Hi Dave -

No problem. What went wrong with the CCD image - was it misfocus as you suspected?

Cheers,

Peter

[Dave Smith]

Yes, I fairly sure it was misfocus. It is so critical.

Dave

[iksose7]

Congrats on a great image Dave, nicely done

[StuartJPP]

Nicely captured Dave, excellent colours, pity about the CCD version.

[Dave Smith]

Thanks Ikose7 and Stuart. In a strange way I'm pleased that the CCD version didn't come out too well, otherwise I might never have tried it with the DSLR.

Dave

[Gina]

I'm glad you did try the DSLR Dave And gave us that real cracker of an image to enjoy - thank you

[Dave Smith]

Thanks again Gina.

Dave

[ultranova]

You have done yourself proud on this picture Dave

well done

Paul

[Dave Smith]

Thanks Paul. Much appreciated.

Dave

[morimarty]

I think I'm going to blow the dust of my dslr having just seen your image of M42 Dave. Excellent work!

[Dave Smith]

Thanks Martyn

Dave

[Gina]

I'm rebuilding my Peltier cooled 1100D yet again

[cloudbuster]

whilst this is a lovely detailed image, i cant quite help that feel that there is a 'dullness' with the colours...ie..not vibrant. just my thought.