A deeper Orion widefield!!

Garyh · #1 14-12-2006, 02:59 PM

Hi Again everyone,....

The weather cleared up just on dark last night so I thought I get out and do a image or two and do some meteorite spotting as I don`t think tonight we will see clear skies for the Geminids peak!......

Anyways image is a stack of 17x4min at iso 800 3 darks subtracted and stacked in registax and procesed in Ps. Forgot to mention that it is taken with a old 35mm f/2.4 pentax lense at about f3.5.
I did many more images as wanted to go nice and deep but those high clouds ruined a lot of pics, but managed to salvage a nice image out of it all..
You can just make out the witchhead reflection neb!
Any commants etc most welcome!...

Picture is around 400k in size.

http://www.iceinspace.com.au/uploads...m-17-stack.jpg

Cheers Gary

leon · #2 14-12-2006, 03:40 PM

Hi Gary,

Certainly a deep image, maybe you could have tried ISO of 400 instesd of 800, there seems quite a bit of noise in the image.

I have tried some images of M 42 with a 135mm F/ 2.0 Lens and found that the maximium time at 800 was about 1minute 30seconds, however i got much better results at a lower ISO setting.

I realise you were imaging at 3.5, but i think you may have overdone the times, and ISO setting.

However you certainly have brought out a lot of detail, nice work

Cheers leon

jakob · #3 14-12-2006, 04:32 PM

This is a fanastic picture!
I love the colours and details.
Thanks for sharing, Jakob.

ving (David) · #4 14-12-2006, 04:47 PM

great image!!!
i can see the horsey

Omaroo (Chris Malikoff) · #5 14-12-2006, 04:59 PM

Quote:

Originally Posted by ving

great image!!!
i can see the horsey

Crikey - you can too... right where it's meant to be off Alnitak & Sigma Ori. Very noice... but it's a very small little horse....

allan gould · #6 14-12-2006, 05:27 PM

Very nice image. Certainly shows much of the Orion nebulosity well.

jase (Jason) · #7 14-12-2006, 06:07 PM

Good work Gary. Certainly captured Barnards loop well. Not to certain about your diffraction spikes though. They appear a little un-natural.

Keep'em coming.

RB (Andrew) · #8 14-12-2006, 06:20 PM

Awesome shot Gary, it's got heaps of colour and detail.

Jase the spikes are caused by the aperture blades in the camera lens.
Gary used a 35mm f/2.4 pentax lens @ f3.5.

Garyh · #9 14-12-2006, 07:19 PM

Thanks everyone for the comments....

I have pushed the original stacked image quiet hard so it has shown some of the noise as well. It was also quiet warm last night at around 20c which makes it even more noisey. Transparancy was only about 6/10 I say as well.
Leon, I could push it to maybe 5 min at f/3.5 on a really clear night at iso 800. But as you say if I get the right night a few hours of iso 400 shots will make a very nice image..!!!
My televue genesis which is f/5 can get to about 12min at iso 800 before skyfog begins to be obtrusive...thats on a really good clear night.
A hazy night I can get to only half of this.
Im glad to have only a small amount of light pollution here!!!
Cheers

leon · #10 14-12-2006, 07:31 PM

Hi Gary
Please dont get me wrong, i wasn't having a shot at your work, i'm sure you know what you are doing, and the image certainly had a lot of depth.
I suppose i was just comparing settings and time with what i can achieve at my place, i have a fair bit of light pollution down here.

And by the way i'm no expert on the subject, as iv'e a only been doing imaging for about twelve months or so, digital that is, i have only just upgraded from film.

I just thought it looked a bit noisey, other than that it was a fine image.

Cheers leon

Garyh · #11 14-12-2006, 07:56 PM

No probs Leon....

.....I live 20ks out of town which is great for darker skies..
Oh and same here, had the DSLR just about 14 months now so still learning myself and all comments help to make a better picture, its a never ending learning curve!!! Much better than film, poor old film camera hasn`t been used since!!!
You have some great lenses at your disposal.......still saving for a good one...maybe a 200mm f2.8 L....birthday mayb..

cheers.

leon · #12 14-12-2006, 08:03 PM

Ah yes Gary, that would be a nice piece of technology, they, the Canon range of lenses are just superb, a bit pricy but it would last you forever.

Cheers leon

Ric · #13 16-12-2006, 10:14 AM

Fantastic image Gary. The details and the colour are superb.

Well done

h0ughy (David) · #14 16-12-2006, 10:38 AM

wow WHAT A RESULT! great shot Gary

Garyh · #15 16-12-2006, 06:36 PM

Thanks Ric and Houghy for the comments!!! I wish that high cloud had gone somewhere else that night as I would have had about 30x4min pics to stack which would have helped with all the noise......but thats for the next attempt!! ;-)
Cheers and CS Gary

spearo (Frank) · #16 17-12-2006, 07:25 AM

great work
well done
the only good cloud is the one that brings rain...
:]
f

FOOTPRINT · #17 17-12-2006, 11:01 AM

Hi Gary, Thats a nice picture and shows the loop well, I did the same as this with the same equipment (modded Canon EOS300D + Pentax 55mm F-1.8 Lens) but at ISO-400 and 15 x 2 Min. Exp. ended up with not too much noise and good definition, very little colour distortion either seeing its just a glass lens (not ED Etc.), I have an ED Lens (70-300 mm) but have only tried it once (due Weather) and first results were blue haols around bright stars, which I dont think should happen, being an ED Lens, so I was surprised with the results from the old Pentax Lens, id post the pictures but seem to have lost this facility in the last few days, awaiting advice from Mike on what to do to get it back, look forward to seeing more of this subject.cheers......Jim