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Galaxy M51, as said a LRHaGB Picture, raw frames/subs taken 18->19 March-2018.
More info. about the shown/below galaxy picture can be seen here, (and in higher resolution), thanks.
Kind regards Niels

Announcements / Iria is leaving Atik
« Last post by Iria-Atik on Today at 04:39:14 PM »
Hi everyone!

After around a year and a half enjoying astrophotography in Atik, I'm leaving this fantastic company by the end of the week.

I'd just like to thank everybody for sharing so many beautiful images, tips and knowledge about this amazing hobby. It's been a pleasure talking with some of you on this forum and our social media.

Clear skies!
Atik Infinity / Re: Infinity Software Bug Caused by Fast Display
« Last post by Iria-Atik on Today at 10:22:13 AM »
Hi Cliff,

I'm sorry you're experiencing issues with the latest version of the Infinity SW, our software engineer will have a look at this as soon as possible. And thank you very much for contacting our support team, they'll be in contact with you shortly.

Best regards,
Atik Infinity / Re: Infinity - Image Settings Help
« Last post by Cliff Halliwell on March 17, 2018, 06:29:57 PM »
Ah, M42 is a testament to the huge dynamic range (difference between the brightest and darkest parts of the nebula) of the human eye and the limited dynamic range of even 16-bit cameras and the even more limited dynamic range of most monitors we would use to view our results.

With a big scope the naked eye can see lots of nebulosity in M42 and the stars of the Trapezium. 

The camera cannot capture both.  When you see a good astrophoto of M42 it is usually 2 photos blended together, with the Trapezum area shot with very short exposures and the nebulosity with much longer exposures.  Otherwise the whole Trapezium will just blow out (all the pixels r3cord at their highest level, which is pure white), and no amount of histogram manipulation can bring it back.

Moreover, when you see many astro photos on your PC, the image dynamic range is seriously compressed to brighten the shadows and darken the brightest areas.  That is because your typical monitor clips far too much of the dynamic range in an image.  That is why, even for daylight photography with a DSLR, you often have to brighten shadows to see what is in them.  It is in the image, just not on the screen.

So, as the old saying goes: you cannot get there from here, at least not with respect to M42.  M51 is a great target to see what you can capture, as it has no really bright bits.  M33 is a challenging target as, while large, it has only faint bits.  Even M31 (Andromeda) is a bit of a challenge as it is easy to blow out the bright core while trying to capture more of the arms and dust lanes.
Atik Infinity / Infinity Software Bug Caused by Fast Display
« Last post by Cliff Halliwell on March 17, 2018, 03:32:30 AM »
I am spending the first clear night in a while trying a mini Messier Marathon with my 460EX and the Infinity software and discovered a bug. 

Infinity crashed on 'updating' an image when I had 'Use Fast Display' on.  I am using the latest version of Infinity. 

I uninstalled it, installed an earlier version ( that I had on my disk (SUGGESTION: leave the earlier versions accessible from the web site, so people can roll back if a new bug bugs them), replicated the problem (before realizing what it was), remembered I had checked 'Use Fast Display), unchecked it and everything was fine and then re-installed the latest version).  Everything is fine now. 

So: time to bug check the code for using fast display. 
Large Format / Figuring back-focus for a C11 Edge HD
« Last post by edwiley on March 16, 2018, 04:29:40 PM »
I have a 0.7X reducer on my C11 Edge HD. In addition I have an Optec focuser, EFW2 Filter Wheel and my Atik 4000. Can anyone confirm if I have calculated the back-focus starting from the rear flange of the reducer?

Optec focuser = 88.9 mm
Filterwheel + filter (+1mm) = 23mm
Atik 4000 : nose is 32mm + 16.5 mm = 48.5 mm

total back-focus distance = 160.4 mm

This is 14.4 mm longer than recommended by Celestron (ca. 146mm), but stars are round to the edge of the chip. So, it is obvious there is latitude for not having the exact back-focus published by Celestron. However, if I add an Atik OAG I am afraid I will be out of luck (another 24 mm back-focus).

So, if I have calculated correctly (perhaps not), I am looking at the "nose" of the 4000 (that 32 mm piece on the mechanical drawing). What is its function? And could I recover 32 mm with a custom part and discard the nose completely?

I have to admit, the camera is 2 hours away in the observatory and I have not carefully inspected the nose part.

Thanks, Ed
Atik Horizon / Re: atik horizon
« Last post by Iria-Atik on March 16, 2018, 11:22:22 AM »
Hi Rag,

Yes, the Horizon can work with APT using ASCOM.

I hope this helps!
Atik Horizon / atik horizon
« Last post by on March 15, 2018, 10:24:01 PM »
can atik horizon be used with astrophotography tool?
Accessories / Another EFW2 failure Solved
« Last post by edwiley on March 13, 2018, 09:46:40 PM »
After cleaning my filters I encountered many of the problems I have read in recent posts -- hard to connect, fliter wheel keeps turning, stops between filters, wrong filter selection (as in SGP reporting Blue in position 1 and actually having green in Position 2, etc.). Switching cables did not help. Re-installing Artemis capture and drivers did not help. Then I read one post that suggested adjusting the tension using the little recessed screw next to the USB connector. Bingo!

ATIK should post this solution. If the tension is not correct, things go wrong, perhaps even with connection (??). American users: you need a 1.5mm hex wrench for the screw. Persons living in rational countries probably have a set.

Deep Sky Images / Re: M66-ATIK HORIZON MONO
« Last post by dpaul on March 13, 2018, 03:06:20 AM »
Thanks Jim,

I've finally learnt how to use Pixinsight better - each image took about 1-2 hours of processing so not too long!

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