Go Back   IceInSpace > Images > Deep Space

Reply
 
Thread Tools Rate Thread
  #1  
Old 18-05-2018, 05:48 AM
codemonkey's Avatar
codemonkey (Lee)
Lee "Wormsy" Borsboom

codemonkey is offline
 
Join Date: Jul 2013
Location: Kilcoy, QLD
Posts: 2,058
Ngc 5078

This is the first light for the new ROR and hopefully my return to frequent imaging. This is only the third image I've done in almost a year, with the other two being quite short integrations.

I may yet add more data to this, but I have to confess to losing motivation quickly once I get around the 10hr mark due to the diminishing returns in terms of SNR.

I did no flats for this, but instead did a synthetic flat using a novel (as far as I know) technique which I'll detail elsewhere. Won't work for every image but I cleaned up all the dust donuts and vignetting very easily without negatively impacting the SNR of the image.

Integration details:
L: 196x240" -15C bin 1x1
R: 12x240" -15C bin 1x1
G: 12x240" -15C bin 1x1
B: 11x240" -15C bin 1x1
Integration: 15.4 hours

Equipment used was that in my signature.

"Seeing" was actually poor / average for my location, which may be due to the construction materials of the new observatory and now required cool-down time for the scope.

Full resolution available on Astrobin.

Edit: More data! Now 15.4hrs instead of 9.6hrs. Added new thumbnail. Same old link for full res.
Attached Thumbnails
Click for full-size image (NGC5078_sml.jpg)
80.5 KB109 views
Click for full-size image (NGC5078_15hrs_24min_sml.jpg)
132.4 KB57 views

Last edited by codemonkey; 20-05-2018 at 05:37 AM.
Reply With Quote
  #2  
Old 18-05-2018, 06:38 AM
Placidus (Mike and Trish)
Narrowing the band

Placidus is offline
 
Join Date: Mar 2011
Location: Euchareena, NSW
Posts: 3,719
That's exquisite! Beautiful realistic processing. Lovely composition. Both the object selection and your handling of it are motivating.

Welcome back!
Reply With Quote
  #3  
Old 18-05-2018, 06:45 AM
cometcatcher's Avatar
cometcatcher (Kevin)
<--- Comet Hale-Bopp

cometcatcher is offline
 
Join Date: Jan 2005
Location: Cloudy Mackay
Posts: 6,542
What a beautifully imaged pair of galaxies, nicely framed with that bright yellow star. That's the Sony 178 chip is it?
Reply With Quote
  #4  
Old 18-05-2018, 09:47 AM
Bart's Avatar
Bart
Don't have a cow, Man!

Bart is offline
 
Join Date: Apr 2013
Location: Adelaide, South Australia
Posts: 1,088
Very nice image, well done.
Reply With Quote
  #5  
Old 18-05-2018, 12:09 PM
RickS's Avatar
RickS (Rick)
PI cult recruiter

RickS is offline
 
Join Date: Apr 2010
Location: Brisbane
Posts: 10,584
Very nice, Lee! Perhaps just a little dark? Maybe you need another 10 hours of data
Reply With Quote
  #6  
Old 18-05-2018, 03:00 PM
codemonkey's Avatar
codemonkey (Lee)
Lee "Wormsy" Borsboom

codemonkey is offline
 
Join Date: Jul 2013
Location: Kilcoy, QLD
Posts: 2,058
Quote:
Originally Posted by Placidus View Post
That's exquisite! Beautiful realistic processing. Lovely composition. Both the object selection and your handling of it are motivating.

Welcome back!
Thanks very much!

Quote:
Originally Posted by cometcatcher View Post
What a beautifully imaged pair of galaxies, nicely framed with that bright yellow star. That's the Sony 178 chip is it?
Thanks Kevin! Yes, that's the Sony IMX178. I was worried when I first got it because it has banding that changes every frame, and in my initial tests showed significantly inconsistent median values as well, so I wasn't sure how it would calibrate out. Turns out, pretty well!

Quote:
Originally Posted by Bart View Post
Very nice image, well done.
Thanks Bart :-)

Quote:
Originally Posted by RickS View Post
Very nice, Lee! Perhaps just a little dark? Maybe you need another 10 hours of data
Thanks Rick! I could stretch it some more, but preferred the darker look on this one. That may well change given some time away from it as is often the case. Might have looked at it too much.

I'll probably put some more time into this tonight and tomorrow night and then might call it done. Bad timing now to start a new broadband target given the moon phase, but dark enough for the next two nights that it'd be a waste to use it on a NB or bright target.
Reply With Quote
  #7  
Old 18-05-2018, 04:18 PM
LewisM's Avatar
LewisM
Novichok test rabbit

LewisM is offline
 
Join Date: Aug 2012
Location: Somewhere in the cosmos...
Posts: 10,388
Now, about that dust donut down the bottom....

Nice job! I think it's collimated
Reply With Quote
  #8  
Old 18-05-2018, 06:23 PM
gregbradley's Avatar
gregbradley
Registered User

gregbradley is offline
 
Join Date: Feb 2006
Location: Sydney
Posts: 17,877
Lovely. Great work.
It looks a lot like the Sombrero.
Greg.
Reply With Quote
  #9  
Old 18-05-2018, 06:28 PM
RobC (Rob)
Registered User

RobC is offline
 
Join Date: Apr 2012
Location: Woodford , Queensland , Australia
Posts: 218
Great image Lee. Good to see you are up and running again.

Cheers

Rob
Reply With Quote
  #10  
Old 18-05-2018, 06:40 PM
atalas's Avatar
atalas
Registered User

atalas is offline
 
Join Date: Mar 2005
Location: Sydney
Posts: 5,136
Nice object choice Lee....good work
Reply With Quote
  #11  
Old 18-05-2018, 07:13 PM
Atmos's Avatar
Atmos (Colin)
Ultimate Noob

Atmos is offline
 
Join Date: Aug 2011
Location: Melbourne
Posts: 6,980
Looking really good Lee, good to see you getting back into the game with your new setup
Reply With Quote
  #12  
Old 18-05-2018, 07:16 PM
cometcatcher's Avatar
cometcatcher (Kevin)
<--- Comet Hale-Bopp

cometcatcher is offline
 
Join Date: Jan 2005
Location: Cloudy Mackay
Posts: 6,542
Quote:
Originally Posted by codemonkey View Post

Thanks Kevin! Yes, that's the Sony IMX178.
I just started imaging this now too. Holy cow there's a difference in field of view with the IMX178 and APS-C from my DSLR! You know you've got a galaxy killer here. Be good for small PN's too. I want one now.
Reply With Quote
  #13  
Old 18-05-2018, 07:21 PM
billdan's Avatar
billdan (Bill)
Registered User

billdan is offline
 
Join Date: Mar 2012
Location: Narangba, SE QLD
Posts: 1,551
That's gorgeous Lee, love the rich colours and lots of detail in the galaxies.
Reply With Quote
  #14  
Old 18-05-2018, 09:07 PM
codemonkey's Avatar
codemonkey (Lee)
Lee "Wormsy" Borsboom

codemonkey is offline
 
Join Date: Jul 2013
Location: Kilcoy, QLD
Posts: 2,058
Quote:
Originally Posted by LewisM View Post
Now, about that dust donut down the bottom....

Nice job! I think it's collimated
I see what you did there :p

Thanks! To be honest I never really resolved my optical issues. Pretty sure it's not collimation though. I just bought a tiny sensor so I don't see the nasty anymore :p

Quote:
Originally Posted by gregbradley View Post
Lovely. Great work.
It looks a lot like the Sombrero.
Greg.
Thanks Greg!

Quote:
Originally Posted by RobC View Post
Great image Lee. Good to see you are up and running again.

Cheers

Rob
Thanks Rob; me too!

Quote:
Originally Posted by atalas View Post
Nice object choice Lee....good work
Thanks Louie!

Quote:
Originally Posted by Atmos View Post
Looking really good Lee, good to see you getting back into the game with your new setup
Yeah I'm very glad to be back at it again. Tonight's seeing looks much better too, just pulled some L subs down to 1.6"... but of course now the fog is rolling in.

Quote:
Originally Posted by cometcatcher View Post
I just started imaging this now too. Holy cow there's a difference in field of view with the IMX178 and APS-C from my DSLR! You know you've got a galaxy killer here. Be good for small PN's too. I want one now.
haha yeah, it's not a big galaxy. With the dSLR you'd also easily fit NGC 5101 in there.

I'm mostly interested in galaxies, so selected this sensor because of it's sensitivity and small pixels.

Quote:
Originally Posted by billdan View Post
That's gorgeous Lee, love the rich colours and lots of detail in the galaxies.
Thanks Bill! I was pretty disappointed in the sharpness of the subs to be honest. The first night I don't think I got a sub below 2.7" -- I'm used to seeing 1.8"... can't have great seeing every night though I guess. Still, I'm reasonably happy with how it's turned out so far.
Reply With Quote
  #15  
Old 20-05-2018, 11:22 AM
codemonkey's Avatar
codemonkey (Lee)
Lee "Wormsy" Borsboom

codemonkey is offline
 
Join Date: Jul 2013
Location: Kilcoy, QLD
Posts: 2,058
Now up to 15.4hrs, my longest integration to date. Also brightened it up a bit when I reprocessed it. Not sure I'm happy with the reprocess, might revert back to a darker, more contrasty look but I'll let it sit for a while.

Seeing finally got good on the past couple of nights. The first night I think the best I did was about 2.7", but last night I got the sharpest single L frame I've ever seen, coming in at 1.4" If only the fog had stayed away...

Last edited by codemonkey; 20-05-2018 at 11:38 AM.
Reply With Quote
  #16  
Old 21-05-2018, 07:40 AM
strongmanmike's Avatar
strongmanmike (Michael)
Highest Observatory in Oz

strongmanmike is offline
 
Join Date: May 2006
Location: Canberra
Posts: 17,152
An excellent image of this galaxy Lee, nice job indeed

Mike
Reply With Quote
  #17  
Old 21-05-2018, 07:44 PM
codemonkey's Avatar
codemonkey (Lee)
Lee "Wormsy" Borsboom

codemonkey is offline
 
Join Date: Jul 2013
Location: Kilcoy, QLD
Posts: 2,058
Thanks Mike!
Reply With Quote
  #18  
Old 24-05-2018, 09:13 AM
Paul Haese's Avatar
Paul Haese
Registered User

Paul Haese is offline
 
Join Date: Jan 2009
Location: Adelaide
Posts: 9,937
Nice image Lee, great colour and detail is nice too. I found this galaxy pairing with 5101 to be a tough image to process and I will need to revisit it again sometime. I think you have done a great job on this image though.
Reply With Quote
  #19  
Old 24-05-2018, 02:38 PM
Camelopardalis's Avatar
Camelopardalis (Dunk)
Drifting from the pole

Camelopardalis is offline
 
Join Date: Feb 2013
Location: Brisbane
Posts: 5,425
That’s a beauty, Lee love the details and all the faint little fuzzies scattered around!
Reply With Quote
  #20  
Old 26-05-2018, 10:13 AM
codemonkey's Avatar
codemonkey (Lee)
Lee "Wormsy" Borsboom

codemonkey is offline
 
Join Date: Jul 2013
Location: Kilcoy, QLD
Posts: 2,058
Thanks very much Paul and Dunk! :-)

I think I might get some more data on this field afterall, should the weather clear up when the moon's in a more agreeable phase... going to do a little experiment with regard to how much time I should spend on L vs RGB.
Reply With Quote
Reply

Bookmarks

Thread Tools
Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT +10. The time is now 08:08 AM.

Powered by vBulletin Version 3.8.7 | Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Advertisement
Testar
Advertisement
Bintel
Advertisement