Go Back   IceInSpace > Images > Deep Space
Register FAQ Calendar Today's Posts Search

Reply
 
Thread Tools Rate Thread
  #1  
Old 13-01-2017, 09:05 PM
gregbradley's Avatar
gregbradley
Registered User

gregbradley is offline
 
Join Date: Feb 2006
Location: Sydney
Posts: 18,185
Not often imaged barred spiral galaxy NGC1398

A bit of a faint one but a really interesting galaxy. Love the shape of this galaxy. Barred central core, ringed with some dust clouds evident. Lots of background galaxies. An interesting area.

CDK17 and Proline 16803 on an AP1600. LRGB 350 60 60 80 minutes all 10 minute subs.

http://www.pbase.com/gregbradley/image/164828188/large

http://www.pbase.com/gregbradley/ima...28188/original large size

Greg.
Attached Thumbnails
Click for full-size image (NGC1398 LRGB 350 60 60 80 V6 thumb.jpg)
70.4 KB118 views

Last edited by gregbradley; 15-01-2017 at 02:00 AM.
Reply With Quote
  #2  
Old 13-01-2017, 09:49 PM
Somnium's Avatar
Somnium (Aidan)
Aidan

Somnium is offline
 
Join Date: Oct 2014
Location: Sydney
Posts: 1,669
well don Greg looks fantastic
Reply With Quote
  #3  
Old 13-01-2017, 09:52 PM
alpal's Avatar
alpal
Registered User

alpal is offline
 
Join Date: Jan 2012
Location: Melbourne
Posts: 3,786
Hi Greg,
a beautiful face on spiral that I hadn't seen before.
well done

cheers
Allan
Reply With Quote
  #4  
Old 13-01-2017, 10:14 PM
strongmanmike's Avatar
strongmanmike (Michael)
Highest Observatory in Oz

strongmanmike is offline
 
Join Date: May 2006
Location: Canberra
Posts: 17,689
Nice to finally have some dark skies for that beast huh?? ..and it shows!
Its not bad but needs better colour I recon but I do love the details in this baby, thats what makes this spirograph looking galaxy shine, nice

That M74 though is reeeally lookin good, if you can get some good colour into that, it should be a purler Greg

Mike
Reply With Quote
  #5  
Old 13-01-2017, 10:22 PM
Geoff45's Avatar
Geoff45 (Geoff)
PI rules

Geoff45 is offline
 
Join Date: Jul 2006
Location: Sydney
Posts: 2,631
Nice photogenic galaxy Greg. Nicely captured.
Reply With Quote
  #6  
Old 14-01-2017, 07:47 AM
FranckiM06
Registered User

FranckiM06 is offline
 
Join Date: Jan 2010
Location: Barjols
Posts: 316
Wow, it is wonderful image and very nice galaxy. I didn't knew it
Franck
Reply With Quote
  #7  
Old 14-01-2017, 08:48 AM
alpal's Avatar
alpal
Registered User

alpal is offline
 
Join Date: Jan 2012
Location: Melbourne
Posts: 3,786
Quote:
Originally Posted by strongmanmike View Post
Nice to finally have some dark skies for that beast huh?? ..and it shows!
Its not bad but needs better colour I recon but I do love the details in this baby, thats what makes this spirograph looking galaxy shine, nice

That M74 though is reeeally lookin good, if you can get some good colour into that, it should be a purler Greg

Mike

Hi Mike,
that's personal choice -
I would have boosted the colour in LAB mode too
with a tiny bit extra Red & Green &
also
darkened the background slightly.

cheers
Allan
Reply With Quote
  #8  
Old 14-01-2017, 11:15 AM
gregbradley's Avatar
gregbradley
Registered User

gregbradley is offline
 
Join Date: Feb 2006
Location: Sydney
Posts: 18,185
Quote:
Originally Posted by Somnium View Post
well don Greg looks fantastic
Cheers.


Quote:
Originally Posted by alpal View Post
Hi Greg,
a beautiful face on spiral that I hadn't seen before.
well done

cheers
Allan
Thanks Allan.

Quote:
Originally Posted by strongmanmike View Post
Nice to finally have some dark skies for that beast huh?? ..and it shows!
Its not bad but needs better colour I recon but I do love the details in this baby, thats what makes this spirograph looking galaxy shine, nice

That M74 though is reeeally lookin good, if you can get some good colour into that, it should be a purler Greg

Mike
Thanks Mike. I did some more work on it this morning. Yes the colour was rather weak. Not sure why it seemed to lack. Anyway I have managed to boost it without raising the noise too much. I don't think its a particularly colourful galaxy in the first place but yes the original did lack.

I have colour for M74 and its been on my want to image list for over a year now so I was happy to get some good data. Dark skies do make all the difference.

Quote:
Originally Posted by Geoff45 View Post
Nice photogenic galaxy Greg. Nicely captured.
Thanks Geoff.

Quote:
Originally Posted by FranckiM06 View Post
Wow, it is wonderful image and very nice galaxy. I didn't knew it
Franck
Thanks Fanck. Its not often imaged as its not very bright.

Quote:
Originally Posted by alpal View Post
Hi Mike,
that's personal choice -
I would have boosted the colour in LAB mode too
with a tiny bit extra Red & Green &
also
darkened the background slightly.

cheers
Allan
Thanks Allan. I have boosted the colour and darkened the background a little. I have in the past tended to make the backgrounds too dark but I went too far the other way here! oh to get balance! Thanks for the feedback.

Greg.
Reply With Quote
  #9  
Old 14-01-2017, 11:48 AM
topheart
Registered User

topheart is offline
 
Join Date: Nov 2005
Location: Cairns
Posts: 1,087
Nice galaxy Greg!
Thanks,
Tim
Reply With Quote
  #10  
Old 14-01-2017, 12:20 PM
Atmos's Avatar
Atmos (Colin)
Ultimate Noob

Atmos is offline
 
Join Date: Aug 2011
Location: Melbourne
Posts: 7,013
Gorgeous spiral structure! Has an interesting central barred region as well. I do wonder whether it has had a violent past (recentish history) or if it is an AGN... some research may be required
Would darkening the background a little further increase the contrast further? I am viewing on my iPhone right now so it isn't exactly the best of screens and lighting
Reply With Quote
  #11  
Old 14-01-2017, 01:22 PM
el_draco (Rom)
Politically incorrect.

el_draco is offline
 
Join Date: Apr 2009
Location: Tasmania (South end)
Posts: 2,315
Lots of faint galaxies as well. Excellent image!
Reply With Quote
  #12  
Old 14-01-2017, 01:42 PM
Slawomir's Avatar
Slawomir (Suavi)
Registered User

Slawomir is offline
 
Join Date: Sep 2014
Location: North Queensland
Posts: 3,240
I have not seen this galaxy before, and it is so pretty! VERY nice image Greg
Reply With Quote
  #13  
Old 14-01-2017, 05:47 PM
atalas's Avatar
atalas
Registered User

atalas is offline
 
Join Date: Mar 2005
Location: Sydney
Posts: 5,151
Nice work Greg
Reply With Quote
  #14  
Old 15-01-2017, 12:58 AM
gregbradley's Avatar
gregbradley
Registered User

gregbradley is offline
 
Join Date: Feb 2006
Location: Sydney
Posts: 18,185
Quote:
Originally Posted by topheart View Post
Nice galaxy Greg!
Thanks,
Tim
Thanks Tim.

Quote:
Originally Posted by Atmos View Post
Gorgeous spiral structure! Has an interesting central barred region as well. I do wonder whether it has had a violent past (recentish history) or if it is an AGN... some research may be required
Would darkening the background a little further increase the contrast further? I am viewing on my iPhone right now so it isn't exactly the best of screens and lighting
It is an unusual shape. The barred central core seems quite bright and the outer rings are an unusual elliptical shape/ ring shape. It possibly could have the background darkened a tad. I left a bit of room to the left of the histogram rather than shift the blackpoint to the start of the histogram which can often be cut off when you do colour processing.

Quote:
Originally Posted by el_draco View Post
Lots of faint galaxies as well. Excellent image!
Thanks. I like these background galaxies that can show up in these types of images.

Quote:
Originally Posted by Slawomir View Post
I have not seen this galaxy before, and it is so pretty! VERY nice image Greg
Thanks Suavi. Its not very bright so probably why its not often imaged.

Quote:
Originally Posted by atalas View Post
Nice work Greg
Cheers Louie.
Reply With Quote
  #15  
Old 15-01-2017, 02:04 AM
gregbradley's Avatar
gregbradley
Registered User

gregbradley is offline
 
Join Date: Feb 2006
Location: Sydney
Posts: 18,185
Revised the image again as the background still was able to be made darker and I was able to extract more sharpness out of the data. Same links.

Plus I added a crop view:

http://www.pbase.com/gregbradley/ima...28191/original

I think this image is maxed out now without further data.

Greg.
Reply With Quote
  #16  
Old 15-01-2017, 04:03 AM
p1taylor's Avatar
p1taylor
Registered User

p1taylor is offline
 
Join Date: Jan 2008
Location: coventry uk
Posts: 734
very nice galaxy.

peter
Reply With Quote
  #17  
Old 15-01-2017, 07:28 AM
Atmos's Avatar
Atmos (Colin)
Ultimate Noob

Atmos is offline
 
Join Date: Aug 2011
Location: Melbourne
Posts: 7,013
Quote:
Originally Posted by gregbradley View Post
Revised the image again as the background still was able to be made darker and I was able to extract more sharpness out of the data. Same links.

Plus I added a crop view:

http://www.pbase.com/gregbradley/ima...28191/original

I think this image is maxed out now without further data.

Greg.
Reply With Quote
  #18  
Old 15-01-2017, 09:17 AM
alpal's Avatar
alpal
Registered User

alpal is offline
 
Join Date: Jan 2012
Location: Melbourne
Posts: 3,786
Quote:
Originally Posted by gregbradley View Post
Revised the image again as the background still was able to be made darker and I was able to extract more sharpness out of the data. Same links.

Plus I added a crop view:

http://www.pbase.com/gregbradley/ima...28191/original

I think this image is maxed out now without further data.

Greg.


Hi Greg,
that's better -
you have pulled close to the maximum out of the data now.
The galaxy even looks bigger as the halo now stands out.

cheers
Allan
Reply With Quote
  #19  
Old 15-01-2017, 09:27 AM
RickS's Avatar
RickS (Rick)
PI cult recruiter

RickS is offline
 
Join Date: Apr 2010
Location: Brisbane
Posts: 10,584
Fantastic detail and nice and deep, Greg!
Reply With Quote
  #20  
Old 15-01-2017, 10:50 AM
gregbradley's Avatar
gregbradley
Registered User

gregbradley is offline
 
Join Date: Feb 2006
Location: Sydney
Posts: 18,185
Quote:
Originally Posted by p1taylor View Post
very nice galaxy.

peter
Thanks Peter.

Quote:
Originally Posted by Atmos View Post
Cheers.

Quote:
Originally Posted by alpal View Post
Hi Greg,
that's better -
you have pulled close to the maximum out of the data now.
The galaxy even looks bigger as the halo now stands out.

cheers
Allan
Thanks Allan. Yes I think its pretty close to maxed out without more data.

Quote:
Originally Posted by RickS View Post
Fantastic detail and nice and deep, Greg!
Thanks Rick. I've been wanting to image this one for a while.

Greg.
Reply With Quote
Reply

Bookmarks


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 09:31 AM.

Powered by vBulletin Version 3.8.7 | Copyright ©2000 - 2025, Jelsoft Enterprises Ltd.
Advertisement
Astrophotography Prize
Advertisement
Bintel
Advertisement