Go Back   IceInSpace > Images > Deep Space

Reply
 
Thread Tools Rate Thread
  #1  
Old 17-09-2021, 12:24 PM
gregbradley's Avatar
gregbradley
Registered User

gregbradley is offline
 
Join Date: Feb 2006
Location: Sydney
Posts: 17,891
NGC300 20 hours

I have taken lots of images in the last year. About 20.

This is one I took fairly recently, about 3 weeks ago.

NGC300 is a favourite of mine.

I have CDK17 data for this one I took in the past I may add to it.

AP RHA 305, QHY600m photographic version, PME mount, ASI290 guide camera. Taken at my home observatory in Kurrajong NSW (semi-rural skies).

9 hours 20 minutes all 1x1 binned RHA data plus 11 hours of CDK17/FLI Proline 16803 data for a total of 20 hours and 20 minutes of data.

https://pbase.com/image/171964610/large regular size

https://pbase.com/image/171964610/original large size

Greg.
Attached Thumbnails
Click for full-size image (NGC300 LRGB 380 100 90 90 CDK17 Plus RHA data V5 thumb.jpg)
158.1 KB165 views

Last edited by gregbradley; 17-09-2021 at 05:52 PM.
Reply With Quote
  #2  
Old 17-09-2021, 05:22 PM
Bassnut's Avatar
Bassnut (Fred)
Narrowfield rules!

Bassnut is offline
 
Join Date: Nov 2006
Location: Torquay
Posts: 5,064
Very nice Greg, but its a bit blown in the middle
In PS I curved down a bit and then applied shadows/highlights (toning down hightlights), suddenly a whole lot more colour and tiny nebs popped out!.
And a lot more detail in the core
Reply With Quote
  #3  
Old 17-09-2021, 05:42 PM
gregbradley's Avatar
gregbradley
Registered User

gregbradley is offline
 
Join Date: Feb 2006
Location: Sydney
Posts: 17,891
Good catch Fred.

I've done that and you are right it is a nice improvement.

Greg.
Reply With Quote
  #4  
Old 18-09-2021, 04:40 AM
Ryderscope's Avatar
Ryderscope (Rodney)
Registered User

Ryderscope is offline
 
Join Date: May 2006
Location: Glanmire, NSW
Posts: 2,182
NGC 300 certainly makes for a fine display Greg. You’ve done well producing 20 images over the past year. This last new moon period has been good but generally we’ve been covered in clouds in the Central West of NSW.

CS,
Rodney
Reply With Quote
  #5  
Old 18-09-2021, 06:38 AM
gregbradley's Avatar
gregbradley
Registered User

gregbradley is offline
 
Join Date: Feb 2006
Location: Sydney
Posts: 17,891
Quote:
Originally Posted by Ryderscope View Post
NGC 300 certainly makes for a fine display Greg. You’ve done well producing 20 images over the past year. This last new moon period has been good but generally we’ve been covered in clouds in the Central West of NSW.

CS,
Rodney
Thanks Rodney.

I've had a few periods of several clear nights that help accumulate data.

Sometimes when you go to process the data you find some issues that stop the completion of the image until you get some replacement good data.

Greg.
Reply With Quote
  #6  
Old 18-09-2021, 08:19 AM
PRejto's Avatar
PRejto (Peter)
Registered User

PRejto is offline
 
Join Date: Jan 2011
Location: Rylstone, NSW, Australia
Posts: 1,398
Nice work, Greg! NGC300 isn't easy.

Peter
Reply With Quote
  #7  
Old 18-09-2021, 09:14 AM
markas (Mark)
Registered User

markas is offline
 
Join Date: May 2012
Location: Melbourne Australia
Posts: 461
Splendid image, Greg. This low surface brightness galaxy ain't easy
Mark
Reply With Quote
  #8  
Old 18-09-2021, 09:49 AM
gregbradley's Avatar
gregbradley
Registered User

gregbradley is offline
 
Join Date: Feb 2006
Location: Sydney
Posts: 17,891
Quote:
Originally Posted by Ryderscope View Post
NGC 300 certainly makes for a fine display Greg. You’ve done well producing 20 images over the past year. This last new moon period has been good but generally we’ve been covered in clouds in the Central West of NSW.

CS,
Rodney
Quote:
Originally Posted by PRejto View Post
Nice work, Greg! NGC300 isn't easy.

Peter
Cheers Peter. Yes its funny one and a bit hard to get to look good.

Quote:
Originally Posted by markas View Post
Splendid image, Greg. This low surface brightness galaxy ain't easy
Mark
Thanks. The CDK data helped a lot there.
Reply With Quote
  #9  
Old 18-09-2021, 12:52 PM
marc4darkskies's Avatar
marc4darkskies (Marcus)
Billions and Billions ...

marc4darkskies is offline
 
Join Date: Mar 2007
Location: Quialigo, NSW
Posts: 3,141
Lovely detail & depth Greg! Well done!
Reply With Quote
  #10  
Old 18-09-2021, 12:54 PM
Retrograde's Avatar
Retrograde (Pete)
a.k.a. @AstroscapePete

Retrograde is online now
 
Join Date: Oct 2011
Location: Sydney
Posts: 1,628
Very nice rendition Greg.
Reply With Quote
  #11  
Old 18-09-2021, 03:55 PM
Placidus (Mike and Trish)
Narrowing the band

Placidus is offline
 
Join Date: Mar 2011
Location: Euchareena, NSW
Posts: 3,719
Excellent work Greg! The level of faint detail is shown by the tiny tidal tail on the distant galaxy toward 10 o'clock.
Reply With Quote
  #12  
Old 18-09-2021, 03:56 PM
multiweb's Avatar
multiweb (Marc)
ze frogginator

multiweb is offline
 
Join Date: Oct 2007
Location: Sydney
Posts: 22,062
Gorgeous shot Greg. Superb colors and fov.
Reply With Quote
  #13  
Old 18-09-2021, 05:44 PM
gregbradley's Avatar
gregbradley
Registered User

gregbradley is offline
 
Join Date: Feb 2006
Location: Sydney
Posts: 17,891
Quote:
Originally Posted by marc4darkskies View Post
Lovely detail & depth Greg! Well done!
Thanks Marcus. It pays to keep earlier data.

Quote:
Originally Posted by Retrograde View Post
Very nice rendition Greg.
Thanks very much.

Quote:
Originally Posted by Placidus View Post
Excellent work Greg! The level of faint detail is shown by the tiny tidal tail on the distant galaxy toward 10 o'clock.
Cheers. Oh yes I can see that. Gee its quite a long tidal tail.

Quote:
Originally Posted by multiweb View Post
Gorgeous shot Greg. Superb colors and fov.
Thanks Marc. The CDK data really lifted it.

Greg.
Reply With Quote
  #14  
Old 19-09-2021, 09:27 AM
JA
.....

JA is offline
 
Join Date: Oct 2016
Location: Melbourne, Australia
Posts: 2,961
That's a lovely image Greg and 20hours WOW

Maybe you did it to show the clear border between your 2 data sets, and please ignore my comment if that's the way you wanted to go, but if it were me, I would try to meld the "diagonal" border somewhat. I did a quick check in PS (here's me suggesting to you -sorry ) and you could use something as simple as the black point eyedropper in Adjustments> Levels area by say setting the black point in the inner framed image in the black surrounds of the galaxy by sampling the black point eyedropper with the darkness in the 1-2 o'clock zone. Doing this quick adjustment really integrated the surrounding space without any penalty that I could see to the galaxy detail, in fact it punched it out more contrast wise.

PS Greg: All suggested with the greatest of respect - I would have no hope of producing something similar gear and experience wise, so feel somewhat vexed in putting this suggestion forward.

Best
JA

Last edited by JA; 19-09-2021 at 09:41 AM.
Reply With Quote
  #15  
Old 19-09-2021, 10:23 AM
gregbradley's Avatar
gregbradley
Registered User

gregbradley is offline
 
Join Date: Feb 2006
Location: Sydney
Posts: 17,891
Quote:
Originally Posted by JA View Post
That's a lovely image Greg and 20hours WOW

Maybe you did it to show the clear border between your 2 data sets, and please ignore my comment if that's the way you wanted to go, but if it were me, I would try to meld the "diagonal" border somewhat. I did a quick check in PS (here's me suggesting to you -sorry ) and you could use something as simple as the black point eyedropper in Adjustments> Levels area by say setting the black point in the inner framed image in the black surrounds of the galaxy by sampling the black point eyedropper with the darkness in the 1-2 o'clock zone. Doing this quick adjustment really integrated the surrounding space without any penalty that I could see to the galaxy detail, in fact it punched it out more contrast wise.

PS Greg: All suggested with the greatest of respect - I would have no hope of producing something similar gear and experience wise, so feel somewhat vexed in putting this suggestion forward.

Best
JA
Thanks for the tip JA. I didn't know that trick, very handy as the 2 data sets had different image orientations hence the diagonal zone having a different background.

I used that and it worked really well. Same links.

Greg.
Reply With Quote
  #16  
Old 19-09-2021, 04:45 PM
Andy01's Avatar
Andy01 (Andy)
My God it's full of stars

Andy01 is offline
 
Join Date: Mar 2012
Location: Melbourne
Posts: 3,256
Nice work on a challenging target Greg, it's come up very well!
Reply With Quote
  #17  
Old 19-09-2021, 06:57 PM
strongmanmike's Avatar
strongmanmike (Michael)
Highest Observatory in Oz

strongmanmike is offline
 
Join Date: May 2006
Location: Canberra
Posts: 17,170
Such a cool, photogenic galaxy, close enough to show some real internal structure and details, including HII regions, plus there are plenty of varied background fuzzies too

Mike
Reply With Quote
  #18  
Old 20-09-2021, 11:33 AM
PRejto's Avatar
PRejto (Peter)
Registered User

PRejto is offline
 
Join Date: Jan 2011
Location: Rylstone, NSW, Australia
Posts: 1,398
Quote:
Originally Posted by JA View Post
you could use something as simple as the black point eyedropper in Adjustments> Levels area by say setting the black point in the inner framed image in the black surrounds of the galaxy by sampling the black point eyedropper with the darkness in the 1-2 o'clock zone. Doing this quick adjustment really integrated the surrounding space without any penalty that I could see to the galaxy detail, in fact it punched it out more contrast wise.
Thanks for this tip!! I tried it on the small thumbnail image in the first post and it works amazingly well!

Peter
Reply With Quote
  #19  
Old 20-09-2021, 06:44 PM
gregbradley's Avatar
gregbradley
Registered User

gregbradley is offline
 
Join Date: Feb 2006
Location: Sydney
Posts: 17,891
Quote:
Originally Posted by Andy01 View Post
Nice work on a challenging target Greg, it's come up very well!
Thanks Andy. It is a surprisingly difficult galaxy with its less than bright core and dim arms.

Quote:
Originally Posted by strongmanmike View Post
Such a cool, photogenic galaxy, close enough to show some real internal structure and details, including HII regions, plus there are plenty of varied background fuzzies too

Mike
Cheers Mike. Large aperture at dark skies is a pretty unbeatable combo.

Hmm, perhaps I should get a mobile mount and make some offers so I can image at eagleview for a few nights!!

Quote:
Originally Posted by PRejto View Post
Thanks for this tip!! I tried it on the small thumbnail image in the first post and it works amazingly well!

Peter

Yes it is an excellent tip.
Reply With Quote
  #20  
Old 21-09-2021, 10:40 AM
JA
.....

JA is offline
 
Join Date: Oct 2016
Location: Melbourne, Australia
Posts: 2,961
Quote:
Originally Posted by gregbradley View Post
Thanks for the tip JA. I didn't know that trick, very handy as the 2 data sets had different image orientations hence the diagonal zone having a different background.

I used that and it worked really well. Same links.

Greg.
Quote:
Originally Posted by PRejto View Post
Thanks for this tip!! I tried it on the small thumbnail image in the first post and it works amazingly well!

Peter
Guys, it amazed the hell out of me !

Best
JA
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 08:11 PM.

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