Jump to content

  •  

CNers have asked about a donation box for Cloudy Nights over the years, so here you go. Donation is not required by any means, so please enjoy your stay.

Photo

Please pick a ghost...

  • Please log in to reply
22 replies to this topic

#1 Stelios

Stelios

    Cosmos

  • *****
  • Moderators
  • topic starter
  • Posts: 9,917
  • Joined: 04 Oct 2003
  • Loc: West Hills, CA

Posted 13 December 2019 - 02:15 AM

I really can't make up my mind here. This is the *same* HA master (DC, DBE, Deconv, Denoise with MLT) of the Ghost of Cassiopeia, stretched in three different ways. Which do you like the most? (the .jpg's mung the quality which is sharper in the originals)

 

1. This is PI's STF with the black point raised a bit. Sort of a compromise between options 2 and 3.

Ghost_STF.JPG

 

2. This is an Arcsinh stretch (several iterations). IMO, it provides the most detail, but is blurrier. 

Ghost_Asinh1.jpg

 

3. This is an ad-hoc Curves transformation. It is stretched the least. There's still room to raise black point without clipping.

Ghost_CT1.JPG

 

I have a lot more processing to do (using NBRGBCombination with LRGB) and I don't want to do it three times... so, which Ghost would you like to be haunted bigshock.gif  scared.gif by? 

 


  • zjc26138, dmdouglass, Chuckwagon and 9 others like this

#2 Chuckwagon

Chuckwagon

    Viking 1

  • *****
  • Posts: 929
  • Joined: 23 Jan 2008
  • Loc: Orem, Utah, USA

Posted 13 December 2019 - 02:48 AM

I like the third one.  It's more contrasty than the 1st, and seems a little more "natural" than the 2nd.  smile.gif

 

But since I'm not Goldilocks, I'd take all of them.  :)  They all look great.


Edited by Chuckwagon, 13 December 2019 - 02:50 AM.

  • PirateMike likes this

#3 Cfreerksen

Cfreerksen

    Apollo

  • *****
  • Posts: 1,118
  • Joined: 18 Aug 2018
  • Loc: Tooele, Ut

Posted 13 December 2019 - 02:52 AM

3. Can't you increase the top end like in 3 and keep more of the bottom end nebulosity like in 2?

 

Chris


Edited by Cfreerksen, 13 December 2019 - 02:52 AM.

  • PirateMike and OldManSky like this

#4 RJF-Astro

RJF-Astro

    Viking 1

  • -----
  • Posts: 620
  • Joined: 13 Aug 2018
  • Loc: Zeist, Netherlands

Posted 13 December 2019 - 03:02 AM

My vote is for nr. 1. It is more subtle, which I like. Maybe I would increase the contrast of the ghost a bit. In Photoshop I would use a very selective layer mask with a curves adjustment. I do not know PI well enough to suggest a route there.


  • PirateMike likes this

#5 happylimpet

happylimpet

    Aurora

  • *****
  • Posts: 4,885
  • Joined: 29 Sep 2013
  • Loc: Southampton, UK

Posted 13 December 2019 - 04:40 AM

1. natural

 

2 is too stretched. 3, i cant put my finger on whats wrong.....!!!

 

Great data.


  • PirateMike likes this

#6 ajaxuk

ajaxuk

    Explorer 1

  • -----
  • Posts: 78
  • Joined: 15 Nov 2019
  • Loc: Cyprus

Posted 13 December 2019 - 05:04 AM

All look great, but my preference is number one because it looks more ethereal.


  • PirateMike likes this

#7 kathyastro

kathyastro

    Vanguard

  • *****
  • Posts: 2,137
  • Joined: 23 Dec 2016
  • Loc: Nova Scotia

Posted 13 December 2019 - 07:53 AM

I like #2 the best.  #1 looks under-done, and #3 looks over-done.  #3 is nice and contrasty, but the highlights look clipped or close to it.


  • dmdouglass and B 26354 like this

#8 terry59

terry59

    Cosmos

  • *****
  • Posts: 9,858
  • Joined: 18 Jul 2011
  • Loc: Colorado, USA

Posted 13 December 2019 - 07:57 AM

Look at the way your brightest stars are haloed in 2 and 3....not the case in number 1, plus the loss of nebulosity in 2 and 3

 

#1 all the way to the bank


Edited by terry59, 13 December 2019 - 07:58 AM.


#9 Bretw01

Bretw01

    Viking 1

  • *****
  • Posts: 555
  • Joined: 13 Feb 2017
  • Loc: IL USA

Posted 13 December 2019 - 08:16 AM

#1, it has the most nebulosity.



#10 RudiVM

RudiVM

    Sputnik

  • -----
  • Posts: 38
  • Joined: 01 Dec 2019
  • Loc: Temse, Belgium

Posted 13 December 2019 - 09:09 AM

nr 1 for me , for the ghosty, whispy nebulosity waytogo.gif 



#11 fetoma

fetoma

    Gemini

  • *****
  • Posts: 3,055
  • Joined: 26 Sep 2006
  • Loc: Southern NJ

Posted 13 December 2019 - 09:42 AM

#1



#12 Stelios

Stelios

    Cosmos

  • *****
  • Moderators
  • topic starter
  • Posts: 9,917
  • Joined: 04 Oct 2003
  • Loc: West Hills, CA

Posted 13 December 2019 - 01:11 PM

So far a clear consensus towards #1, which surprises me a bit--I liked #3 the best for its sharpness. 

 

I'll try to combine #1 and #3 with Pixelmath to see if I can get the Ghost itself to be a *little* more prominent, and the background a *little* darker.

 

But additional opinions welcome--I won't get to this before tomorrow, so there's time for other votes to be counted!


  • Cfreerksen likes this

#13 RudiVM

RudiVM

    Sputnik

  • -----
  • Posts: 38
  • Joined: 01 Dec 2019
  • Loc: Temse, Belgium

Posted 13 December 2019 - 04:10 PM

…..--I liked #3 the best for its sharpness. ……. 

Thats right, but to my eye you have much more detail in  #1 ,which I really like,  and with your PI skills you should be able to sharpen that nicely. And because I am pigheaded I stick with  #1 grin.gif grin.gif . HTH.



#14 mohitk

mohitk

    Vostok 1

  • -----
  • Posts: 107
  • Joined: 25 Jun 2017
  • Loc: A valley in Southern California

Posted 13 December 2019 - 06:05 PM

I like # 1 for many of the reasons already mentioned - more nebulosity making it look more ethereal or "ghosty". But the main reason I like it is because I perceive more of a body in addition to the head and arms in #1, making it a complete ghost. #3 looks mostly like just head and arms to me. Oh and the head looks like a cross between Chewbacca's and Vader's - more so in # 3! smile.gif


  • Cfreerksen likes this

#15 Cfreerksen

Cfreerksen

    Apollo

  • *****
  • Posts: 1,118
  • Joined: 18 Aug 2018
  • Loc: Tooele, Ut

Posted 13 December 2019 - 09:04 PM

I like # 1 for many of the reasons already mentioned - more nebulosity making it look more ethereal or "ghosty". But the main reason I like it is because I perceive more of a body in addition to the head and arms in #1, making it a complete ghost. #3 looks mostly like just head and arms to me. Oh and the head looks like a cross between Chewbacca's and Vader's - more so in # 3! smile.gif

I see the Vader.waytogo.gif

 

Chris



#16 TelescopeGreg

TelescopeGreg

    Vanguard

  • -----
  • Posts: 2,049
  • Joined: 16 Jul 2018
  • Loc: Auburn, California, USA

Posted 13 December 2019 - 10:26 PM

#3 for me.  Shows off the Ghost the best.



#17 kskostik

kskostik

    Vostok 1

  • -----
  • Posts: 102
  • Joined: 23 Apr 2018

Posted 13 December 2019 - 10:39 PM

#3!



#18 sunnyday

sunnyday

    Voyager 1

  • *****
  • Posts: 10,123
  • Joined: 23 Sep 2019
  • Loc: the Canadian nebula .

Posted 13 December 2019 - 10:40 PM

I really can't make up my mind here. This is the *same* HA master (DC, DBE, Deconv, Denoise with MLT) of the Ghost of Cassiopeia, stretched in three different ways. Which do you like the most? (the .jpg's mung the quality which is sharper in the originals)

 

1. This is PI's STF with the black point raised a bit. Sort of a compromise between options 2 and 3.

attachicon.gifGhost_STF.JPG

 

2. This is an Arcsinh stretch (several iterations). IMO, it provides the most detail, but is blurrier. 

attachicon.gifGhost_Asinh1.jpg

 

3. This is an ad-hoc Curves transformation. It is stretched the least. There's still room to raise black point without clipping.

attachicon.gifGhost_CT1.JPG

 

I have a lot more processing to do (using NBRGBCombination with LRGB) and I don't want to do it three times... so, which Ghost would you like to be haunted bigshock.gif  scared.gif by? 

number 3



#19 17.5Dob

17.5Dob

    Fly Me to the Moon

  • ****-
  • Posts: 6,711
  • Joined: 21 Mar 2013
  • Loc: Colorado,USA

Posted 13 December 2019 - 10:55 PM

#3



#20 epdreher

epdreher

    Viking 1

  • *****
  • Posts: 993
  • Joined: 12 Jun 2011
  • Loc: Texas Hill Country

Posted 13 December 2019 - 11:10 PM

3.  The detail is superior, though 1 has better nebulosity.

 

I think this may come down to what each viewer wants in his or her photos.  I'll sacrifice nebulosity for detail most of the time.  Others obviously feel otherwise.  There's no real right or wrong answer.

 

Nice work, Stelios.



#21 geneva_min

geneva_min

    Vostok 1

  • *****
  • Posts: 118
  • Joined: 04 May 2018
  • Loc: Geneva Florida

Posted 13 December 2019 - 11:38 PM

#1.   Well done sir



#22 Night shift

Night shift

    Viking 1

  • *****
  • Posts: 748
  • Joined: 19 Oct 2016
  • Loc: Atlanta Ga.

Posted 13 December 2019 - 11:41 PM

#1



#23 richorn

richorn

    Viking 1

  • -----
  • Posts: 587
  • Joined: 17 Apr 2019
  • Loc: Rancho Palos Verdes. CA

Posted 14 December 2019 - 01:16 AM

I prefer 3, but want the nebulosity from 1.

 

I'm thinking you add 1 to 3 as a lightening layer?? (yeah, photoshop probably. I have no clue how to do that in PI)

 

I'm pretty sure that would add the nebulosity back to the "sharper" layer 3.


  • Cfreerksen likes this


CNers have asked about a donation box for Cloudy Nights over the years, so here you go. Donation is not required by any means, so please enjoy your stay.


Recent Topics






Cloudy Nights LLC
Cloudy Nights Sponsor: Astronomics