#1  
Old 11-06-2019, 09:53 PM
ChrisV's Avatar
ChrisV (Chris)
Registered User

ChrisV is offline
 
Join Date: Aug 2015
Location: Sydney
Posts: 1,100
Starless NGC6188

NGC6188 captured with ASI071, STC duo filter. 12.5 hrs of 10min subs. Processed with PI and stars removed with starnet. Really appreciate some feedback, I got v.little on the other forum
Attached Thumbnails
Click for full-size image (RGB_TM-final.jpg)
191.7 KB141 views
Reply With Quote
  #2  
Old 11-06-2019, 10:24 PM
casstony
Registered User

casstony is offline
 
Join Date: Feb 2006
Location: Warragul, Vic
Posts: 3,968
Looks great Chris, heaps of detail and pleasing colour.
Reply With Quote
  #3  
Old 11-06-2019, 11:08 PM
Startrek (Martin)
Registered User

Startrek is offline
 
Join Date: Dec 2017
Location: Sydney
Posts: 1,117
Great image full of detail and colour but prefer it with stars, personal choice
Reply With Quote
  #4  
Old 11-06-2019, 11:10 PM
RyanJones
Registered User

RyanJones is offline
 
Join Date: Jun 2018
Location: Melbourne,Australia
Posts: 660
Wow Chris.... I mean really wow ! That looks absolutely amazing.

When you do the star removal, it is possible to keep a couple of the brightest stars or is it all of nothing ? I just wonder what it would look like with a couple of feature starts ?
Reply With Quote
  #5  
Old 11-06-2019, 11:18 PM
Mickoid (Michael)
Registered User

Mickoid is offline
 
Join Date: Feb 2016
Location: Melbourne, Australia
Posts: 635
Fantastic Chris, beautifully done, comes up really well on my large monitor and almost looks 3D!
Reply With Quote
  #6  
Old 11-06-2019, 11:35 PM
Atmos's Avatar
Atmos (Colin)
Ultimate Noob

Atmos is online now
 
Join Date: Aug 2011
Location: Melbourne
Posts: 6,080
It looks fascinating starless!
Reply With Quote
  #7  
Old 12-06-2019, 03:29 AM
xelasnave's Avatar
xelasnave
Gravity does not Suck

xelasnave is offline
 
Join Date: Mar 2005
Location: Tabulam
Posts: 12,160
Looks great to me Chris but I do rather like stars in an image. I know it is a bit of a fad at the moment and given the shape of some of my stars one could wish for their absense however their total removal to me seems a strange approach encouraging the viewer to marvel at their absense as a thing of beauty ... I cant get to that place unfortunately... however what remains in your photo is indeed breath taking. I also ask is it possible with the removal software to remove the stars and replace them with pin point light sources...I would like that.

Alex
Reply With Quote
  #8  
Old 12-06-2019, 08:56 AM
Anth10's Avatar
Anth10 (Anthony M)
When its late stay awake

Anth10 is offline
 
Join Date: Jan 2016
Location: Briar Hill
Posts: 339
Chris,
I agree with that Alex, it is definitely an interesting concept and certainly helps honing in on the body of the image being the nebulously and space dust. The contrast and colour is very eye catching. Youíve put some time into this capture and it shows. I still like to see space shots in its pure state and thatís with the stars included.
Great image none the less.
Anth
Reply With Quote
  #9  
Old 12-06-2019, 12:47 PM
Sunfish (Ray)
Registered User

Sunfish is offline
 
Join Date: Mar 2018
Location: Wollongong
Posts: 355
Yes. Beautiful and perfectly captured with a lot of dedicated time. Can we see it with all the stars? I think if the camera firmware somehow partially occluded the large stars using a previous image during exposure that would be useful.

Quote:
Originally Posted by Startrek View Post
Great image full of detail and colour but prefer it with stars, personal choice
Reply With Quote
  #10  
Old 12-06-2019, 03:43 PM
ChrisV's Avatar
ChrisV (Chris)
Registered User

ChrisV is offline
 
Join Date: Aug 2015
Location: Sydney
Posts: 1,100
Thanks all for the comments. Really appreciate them !

Thought I'd put up this version. I have the same shot but with stars over in the Deep space images. It's interesting the difference between shots with and without stars, and how people react to them. I do like stars, but in the end I think what an area of sky actually looks like is what a famous TV philosopher (not Eddy Macguire) calls our "take home reality". Nothing is absolute.

It's taken me ages to get to this stage - trying narrow band type processing on shots taken with my OSC camera and duo filter. It's one hell of a learning curve - star removal, luminance and colour combining etc etc etc. But loads of fun and I've learnt a lot more about PI

My first few weeks at this were disastrous. I was getting rubbish images and horrible stars. So I then got on to star removal. I'm still struggling with it. The next step will be putting nice RGB stars back into it.

With stars
https://www.astrobin.com/full/409329/B/
Attached Thumbnails
Click for full-size image (RGB_TM-final_withStars_bin2.jpg)
200.8 KB64 views

Last edited by ChrisV; 12-06-2019 at 10:36 PM.
Reply With Quote
  #11  
Old 19-06-2019, 07:01 PM
JimsShed's Avatar
JimsShed (Jim)
Registered User

JimsShed is offline
 
Join Date: Jan 2015
Location: Bellbowrie
Posts: 177
The starless pic has the "ooooh" factor. It has an air of mystery and presence because the removal of the stars give a greater feeling of being there.
I love it.
Reply With Quote
  #12  
Old 19-06-2019, 07:59 PM
Wilso (Darren)
Registered User

Wilso is offline
 
Join Date: Nov 2016
Location: Gawler
Posts: 275
Hi NQR from me!

Like the image with the stars as it should be unless there’s a reason for the image to serve a purpose? even if the stars are not quite right in the corners.
To enhance the nebulosity perhaps?... The pursuit of perfection? Art?
Each to their own. I still like viewing the images you guys put up daily though.

Last edited by Wilso; 19-06-2019 at 08:37 PM.
Reply With Quote
  #13  
Old 20-06-2019, 09:23 AM
sil's Avatar
sil (Steve)
Not even a speck of dust

sil is offline
 
Join Date: Jun 2012
Location: Canberra
Posts: 1,295
Honestly neither image do it for me. You've got the nebulosity nice but really needs its colour stars in place.

Removing stars has long been part of my workflow but only as a way to be able to stretch the nebulosity without stretching stars. I use a piece of my star removal process to sometimes "reduce" the stars near the end of my workflow if I want to adjust the balance of stars and nebulosity. Stars gone is just a helpful step to me, not a result. Those white stars really look like they've been overlaid in the second image rather than a natural part of the structure.
Reply With Quote
  #14  
Old 20-06-2019, 10:17 AM
xelasnave's Avatar
xelasnave
Gravity does not Suck

xelasnave is offline
 
Join Date: Mar 2005
Location: Tabulam
Posts: 12,160
Have you got one without the nebulosity and just stars☺.
Both are really good and perhaps the guide should be ...what do you like best...
Alex
Reply With Quote
  #15  
Old 21-06-2019, 09:49 AM
ChrisV's Avatar
ChrisV (Chris)
Registered User

ChrisV is offline
 
Join Date: Aug 2015
Location: Sydney
Posts: 1,100
Thanks Sil and Alex. Sil, removing the stars was hard enough. And as you say I've found it a great way to assist with processing the nebulosity. But I'm finding putting them back in difficult - they always look, well, just shoved back in. Anyway, one step at a time. I'm still trying to figure out the work flow though.
Reply With Quote
  #16  
Old 24-06-2019, 08:15 AM
rcheshire's Avatar
rcheshire (Rowland)
Registered User

rcheshire is offline
 
Join Date: Apr 2010
Location: Geelong
Posts: 2,587
Can you mask the areas concerned and exclude processing the stars that way.
Reply With Quote
  #17  
Old 25-06-2019, 08:29 PM
ChrisV's Avatar
ChrisV (Chris)
Registered User

ChrisV is offline
 
Join Date: Aug 2015
Location: Sydney
Posts: 1,100
Trouble is Rowland, that the stars through OIII are larger than H-alpha. So I end up with large OIII flavoured rings around the larger stars.
... all part of the learning curve
Reply With Quote
  #18  
Old 29-06-2019, 11:15 AM
Andy01's Avatar
Andy01 (Andy)
My God it's full of stars

Andy01 is offline
 
Join Date: Mar 2012
Location: Melbourne
Posts: 2,194
The original starless image truly reveals the twisted molecular cloud formations, without the distracting stars.
Good subject for starless technique - well done!
Reply With Quote
  #19  
Old 02-07-2019, 07:28 PM
Gavin1234
Registered User

Gavin1234 is offline
 
Join Date: Mar 2018
Location: Sydney
Posts: 224
Thatís amazing Chris. I like both but the no stars version really shows off the formations.

I have the same camera but I find this target very hard to capture
Reply With Quote
  #20  
Old 03-07-2019, 09:47 AM
ChrisV's Avatar
ChrisV (Chris)
Registered User

ChrisV is offline
 
Join Date: Aug 2015
Location: Sydney
Posts: 1,100
Thanks Andy, starnet was the breakthrough for that.

Gavin, there's 12 hours in this. Also it basically comes out all red with this OSC camera if I don't use the duo filter. The Ha dominates. With the duo filter I separate the Ha and OIII then push the later.
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 09:22 PM.

Powered by vBulletin Version 3.8.7 | Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.
Advertisement
OzScopes Authorised Dealer
Advertisement
Meade Australia
Advertisement
SkyWatcher Australia
Advertisement
NexDome Observatories
Advertisement
Lunatico Astronomical
Advertisement
Bintel
Advertisement
Celestron Australia
Advertisement
Astronomy and Electronics Centre
Advertisement