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Crescent Neb - Atik 460 EX


jcm

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Hi All,

Quite a few firsts with this image:-

First post on this site for some time.

First nebula with the Atk 460EX.

First time using PixInsight to process.

8" RC working at F5.6 - Atik 460EX ,

Ha 8 X 8mins , OIII 8 X 8mins , synthesised Green channel.

Object was Fairly low in the north east and as I had to go to work the next day, so only managed 8 subs with each filter.

Needs a few "tweaks" in the processing.

John

post-13061-133877781669_thumb.jpg

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John,

Very nice indeed, can't wait to see the tweaked version.

Working out how to do it in PixInsight might take some time :(

May be better to wait until it's higher in the sky and add new subs,

John

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Hi All,

Quite a few firsts with this image:-

First post on this site for some time.

First nebula with the Atk 460EX.

First time using PixInsight to process.

8" RC working at F5.6 - Atik 460EX ,

Ha 8 X 8mins , OIII 8 X 8mins , synthesised Green channel.

Object was Fairly low in the north east and as I had to go to work the next day, so only managed 8 subs with each filter.

Needs a few "tweaks" in the processing.

John

John,

that's an excellent image, especially considering the position, time of year, new camera and processing protocol etc. :(

The faint blue of the oxygen envelope (somewhat heavily pushed in my image here ) is becoming nicely visible.

I was looking forward to seeing some indication of what the Atik 460EX is capable of producing and this is the first image I recall seeing with that camera that really shows its potential.

Regards

Derrick

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Hi

What size filters are you using with the Atik 460 ?

Cheers

The 460EX only needs 1.25" filters. That's the main reason I bought it , plus it is the natural successor to my 16HR. I think I can do much better than this when its higher in the sky.

John

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John,

that's an excellent image, especially considering the position, time of year, new camera and processing protocol etc. :(

The faint blue of the oxygen envelope (somewhat heavily pushed in my image here ) is becoming nicely visible.

I was looking forward to seeing some indication of what the Atik 460EX is capable of producing and this is the first image I recall seeing with that camera that really shows its potential.

Regards

Derrick

Hi Derrick,

I sent some bias/flat frames to a guy who analysed them and he came out with 4.8 ( average ) for the read out noise. Which is pretty low. The only other image I have taken is of M13 which consisted of a number of 1min and 2 min exposures.(8 in total)

John

post-13061-133877782103_thumb.jpg

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Nice!

The stars are bigger then I was expecting any reason?

I have the same scope and the H694 which is the same chip ... not the reducer yet but was planning on ...

Indeed one of the first pictures I see that shows the potential of that chip!

Yves

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Nice!

The stars are bigger then I was expecting any reason?

I have the same scope and the H694 which is the same chip ... not the reducer yet but was planning on ...

Indeed one of the first pictures I see that shows the potential of that chip!

Yves

Not sure about the stars - i am trying to use PixInsight for the first time so I am stumbling about a bit - it's steep learning curve.

Did not do any star reduction at all.

John

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Love the crescent nebula image, impressive considering the number of subs and length.

Got a 460ex coming my way soon, I hope I can make it dance like you have!

I think you will be pleased with it. Not having to use a Kodak chip is quite nice as well. ( sorry Kodak :()

THe image had no flats no dark frames and only bias subtracted.

John

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What temperature do you run the camera at btw ?

It would be great not to have to shoot darks, but I guess with the cooling system you can shoot darks and reuse them fairly easily ?

Apologies in advance as I may pester you with questions when my little beauty arrives :(

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Hi Badgers ,

With such low dark current cooling is not such an issue.

I have been using the camera in the -10 deg area. I suspect images taken at -5 deg would be similar.

Not sure I am going to use darks.

John

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Hi Badgers ,

With such low dark current cooling is not such an issue.

I have been using the camera in the -10 deg area. I suspect images taken at -5 deg would be similar.

Not sure I am going to use darks.

John

John

I dont use darks with my 428 OSC

Bias / flats only and use AstroArt :hello2:

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John

I dont use darks with my 428 OSC

Bias / flats only and use AstroArt :hello2:

Hi Guy,

I think using darks ( particularly with Sony chips) can sometimes make the images worse.

John

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