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  #1  
Old 19-06-2016, 05:48 PM
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PRejto (Peter)
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NGC4038/4039 Antennae Galaxies

My longest integration time yet from my light polluted property in North Curl Curl between April 5 -May 30, 2016

TEC180 + TAK TOA-67 flattener/TEC140 on Paramount MEII/TSX

Luminance 135 x 10 min = 22.5 hours Moravian G-2-8300/TEC180/Astronomik CLS/ONAG/Sharplock Focus .88 arc-sec resolution

RGB Trius H694/Astronomik RGB "Deep Sky filters"

RED: 89 x5 min = 7.41 hours
Green: 65 x 5 min = 5.41 hours
Blue: 91 x 5 min = 7.58 hours

TotaL: 42.9 hours

Full size here: http://www.pbase.com/image/163491407

Thanks for looking! Comments welcome of course.
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Click for full-size image (11. NGC4038-pix BP-final-03-crop..jpg)
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Last edited by PRejto; 20-06-2016 at 11:54 AM.
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  #2  
Old 19-06-2016, 06:00 PM
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Somnium (Aidan)
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really nice effort Peter, you have to be pleased with that. i absolutely love this target, i plan on doing it properly next year.
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  #3  
Old 19-06-2016, 06:25 PM
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batema (Mark)
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Very nice indeed. Nice scopes....
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Old 19-06-2016, 06:28 PM
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WOW

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Old 19-06-2016, 07:08 PM
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That's a stunner Peter. Your best image to date and a real winner. Well done on working out a processing routine to tame the light pollution gradients.

Greg.
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  #6  
Old 19-06-2016, 07:20 PM
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Atmos (Colin)
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Thats very nice Peter! Looks like the new blue filter is is working well for you
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  #7  
Old 19-06-2016, 07:38 PM
Placidus (Mike and Trish)
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Gorgeous! Congratulations!
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Old 19-06-2016, 07:53 PM
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Nice result, Peter!
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  #9  
Old 19-06-2016, 09:24 PM
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marc4darkskies (Marcus)
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Nice result, Peter!
Excellent result Peter!
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  #10  
Old 19-06-2016, 09:32 PM
Ross G
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Amazing photo Peter.

Beautiful colours.

Deep, smooth detail.

So sharp.

Ross.
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  #11  
Old 19-06-2016, 09:52 PM
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Peter Ward
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Nice to see a kindred urban imager pushing through Sydney's sky glow with panache.

Lovely star colour variation, beautifully captured and processed...well done
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Old 20-06-2016, 09:08 AM
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Great details and colours on an inky black background. What's not to like? Top shot.
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  #13  
Old 20-06-2016, 11:01 AM
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Retrograde (Pete)
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That's awesome Peter - even more so given the location it was taken from
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  #14  
Old 20-06-2016, 12:12 PM
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I want to thank everybody together for the generous and kind comments!

Finally I think I've found a technique to deal with my extreme gradients right at the beginning of processing. Up until now I could only partially fix the issue and it would plague me right until the end. That plus collecting a ton of data has made a really big difference.

Thanks all,

Peter
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Old 20-06-2016, 01:39 PM
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strongmanmike (Michael)
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Yes, a ton of data indeed ...for a light polluted site, it came together quite nicely Peter

..you still cursing me?

Mike
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  #16  
Old 20-06-2016, 01:58 PM
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The detail in the main galaxy is very good and the colouring seems quite natural to me.

The data collection has paid off, always good to gather lots of data.

A minor point. You should crop the image as there is a registration bar down the left side of the image.
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  #17  
Old 20-06-2016, 02:19 PM
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PRejto (Peter)
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Quote:
Originally Posted by strongmanmike View Post
Yes, a ton of data indeed ...for a light polluted site, it came together quite nicely Peter

..you still cursing me?

Mike
Nope!!!! Whilst it is 42 hours of light I did it in about 23 hrs! So, good stuff when everything decides to play nice together!

Peter

Quote:
Originally Posted by Paul Haese View Post
The detail in the main galaxy is very good and the colouring seems quite natural to me.

The data collection has paid off, always good to gather lots of data.

A minor point. You should crop the image as there is a registration bar down the left side of the image.
Oh, thanks a lot for that Paul. I went back and looked in photoshop. It's there no doubt but much fainter than the jpg image I uploaded to Pbase. I think the compression must bring it out. Anyway, good advice noted! Thanks.

Peter
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  #18  
Old 27-06-2016, 11:12 AM
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strongmanmike (Michael)
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Originally Posted by PRejto View Post
Nope!!!! Whilst it is 42 hours of light I did it in about 23 hrs! So, good stuff when everything decides to play nice together!

Peter
Phew, good to hear ...just saw it over at Starship Asterisk too, looks good

Hopefully I will have a dual system operating by years end but not specifically planning to have the two systems imaging at the same time ..more just to provide me with two options - wide or narrow depending on the target I wish to hammer

Mike
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  #19  
Old 29-06-2016, 08:20 PM
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PRejto (Peter)
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Quote:
Originally Posted by strongmanmike View Post
Phew, good to hear ...just saw it over at Starship Asterisk too, looks good

Hopefully I will have a dual system operating by years end but not specifically planning to have the two systems imaging at the same time ..more just to provide me with two options - wide or narrow depending on the target I wish to hammer

Mike
That's a nice plan Mike. The biggest isssue that I so far can't solve is that of differential flex between the 2 scopes. I can pretty much go 5 min and hardly see an issue. But, longer becomes problematic. I'm now experimenting with an AO on scope #2 while guiding through scope 1. The idea is that the AO should remove any DF. But, so far I can't find a working method and what was already complicated is now hopelessly complicated. And this is with two refractors. I think mirrored scopes would be raher hopeless unless the AO idea could be implemented. Good luck with your setup!

Peter
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