Jump to content

Stargazers Lounge Uses Cookies

Like most websites, SGL uses cookies in order to deliver a secure, personalised service, to provide social media functions and to analyse our traffic. Continued use of SGL indicates your acceptance of our cookie policy.

jcm

Crescent Neb - Atik 460 EX

Recommended Posts

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

Edited by jcm

Share this post


Link to post
Share on other sites

John,

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

Share this post


Link to post
Share on other sites
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

Share this post


Link to post
Share on other sites

Lovely image :(

Share this post


Link to post
Share on other sites

Nice :(

I can see the shell coming on nicely..

Share this post


Link to post
Share on other sites

Great work really like it. I look forward to seeing it again once you add to it.

Regarding chosen sub length, is 8 mins sky limited exposure time?

Share this post


Link to post
Share on other sites

Very nice image John, especially for such few subs - you're really extracted the most out of this!

Share this post


Link to post
Share on other sites
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

Share this post


Link to post
Share on other sites

Hi

What size filters are you using with the Atik 460 ?

Cheers

Share this post


Link to post
Share on other sites
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

Share this post


Link to post
Share on other sites
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

Edited by jcm

Share this post


Link to post
Share on other sites

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

Share this post


Link to post
Share on other sites
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

Edited by jcm

Share this post


Link to post
Share on other sites

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!

Share this post


Link to post
Share on other sites
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

Share this post


Link to post
Share on other sites

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 :(

Share this post


Link to post
Share on other sites

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

Edited by jcm

Share this post


Link to post
Share on other sites
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:

Share this post


Link to post
Share on other sites
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

Share this post


Link to post
Share on other sites

I really like this image of the cresent nebula John its a super image. LIke Guy i just use master bias and flat frames for my 314l in AA5, and I usually have setpoint cooling at -10

Share this post


Link to post
Share on other sites

A beautiful gossamer effect on the shell. Just right.

I can see this chip becoming the weapon of choice for many if you keep producing images like this

Dave.

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

  • Recently Browsing   0 members

    No registered users viewing this page.

×
×
  • Create New...

Important Information

By using this site, you agree to our Terms of Use.