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FORUMS Photo Sharing & Visual Enjoyment Astronomy & Celestial 
Thread started 20 Jan 2009 (Tuesday) 08:34
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Challenge #3, The Sword of Orion

 
FlyingPete
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Jan 26, 2009 20:13 |  #16

C-Shuler wrote in post #7194082 (external link)
Flying Pete, I tried to photograph Orion's sword the one clear night we had, my first ever attempt at photographing the stars, and what I captured was nothing like what you did. Was there anything else that you did, either during capture or processing? What is DPP? I have CS3 and always use that for processing my portrait photography, but do not know if astrophotography requires a different processing program.

I also have a 40D, but I don't have as fast a lens, my 80-200mm lens gives me a 4.5 at best, about a 2 stop difference. So in order to keep a 5 second exposure I could bump up my ISO to 1600. I will give that a try the next time there are some clear skies and hope to have something of a little more identifiable nebula.

DPP is the Canon RAW software - Digital Photo Professional, that is pretty much I used. I did apply Noise Reduction as I have a few hot pixels that start to show up over 2 seconds or so. I have bumped the sharpness and saturation, whilst reducing contrast.

Also I had the camera mounted to a telescope with a motorised mount which was compensating for star movement.


Peter Lowden.
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strgazr27
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Jan 27, 2009 17:21 |  #17

After 3 hours roughly of calibrating,stacking, aligning and layer masks......Ahh heck here it is......Spec's are below.

Ha Data - 26 X 600 secs @ ISO 1600 18 degrees to start finished at 14 degrees F
RGB Data - 30 X 600 secs @ ISO 800 23 degrees to start finished at 16 degrees F
Skywatcher ED80 w AT .8 Reducer
Clear Filter 40D w Astronomiks 12nm Ha front clip
Atlas running EQMOD - CDC
Borg 76ED/SSAG
Flats - Darks and Bias applied
Captured/Guided in MaximDL v5
IP version 3
Registar
PSCS2

Comments welcomed!

IMAGE NOT FOUND
IMAGE IS A REDIRECT OR MISSING!
HTTP response: 404 | MIME changed to 'text/html' | Byte size: ZERO

Gripped 40D - 17-40L - 70-200 f/4L - Gitzo GT0531 Mountaineer - Astrotrac TT320X-AG
www.strgazr27.zenfolio​.com (external link)

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troypiggo
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Jan 27, 2009 17:36 |  #18

Absolutely breathtaking. Looks like a watercolour painting. So that's what a whole lot of data and skill can produce :)


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Nighthound
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Jan 27, 2009 19:05 |  #19

[jaw hits keyboard]

So that's what I've been missing in mine. :D

Bobby you did an amazing job with this. I am in awe buddy.


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renderwerks
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Jan 27, 2009 19:23 |  #20

Ok, W O W ! !

That's just gorgeous! Excellent Job.


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troypiggo
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Jan 27, 2009 20:54 |  #21

strgazr27 wrote in post #7200505 (external link)
...
Ha Data - 26 X 600 secs @ ISO 1600 18 degrees to start finished at 14 degrees F
RGB Data - 30 X 600 secs @ ISO 800 23 degrees to start finished at 16 degrees F
Skywatcher ED80 w AT .8 Reducer
Clear Filter 40D w Astronomiks 12nm Ha front clip
Atlas running EQMOD - CDC
Borg 76ED/SSAG
Flats - Darks and Bias applied
Captured/Guided in MaximDL v5
IP version 3
Registar
PSCS2

Quick questions - the core (Trapezium) of the nebula isn't blown out considering such long exposures. Is this attributable to the Ha data? Or did you take some shorter exposures not mentioned above?

And is all the lightness outside the main nebula also part of it? Normally I've seen images this is all black, but you appear to have some nebulosity everywhere in this image.


"Interesting. You're afraid of insects and women. Ladybugs must render you catatonic." - Sheldon
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Karl ­ Johnston
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Jan 27, 2009 23:19 |  #22
bannedPermanent ban

Mama mia...that shot is breathtaking


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chris.bailey
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Jan 28, 2009 02:05 |  #23

Cracking shot Bobby. Good control of the trap.




  
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Adrena1in
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Jan 28, 2009 04:33 |  #24

stargazr, I'm speechless. On the one hand I find it hard to believe that all that cloud and nebulosity is there in the first place, pratically invisible. On the other hand I'm amazed that ground-based equipment can be made to pick it up. Truly a stunning image...surely you could publish your stuff, (or do you already?).


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siddr20
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Jan 28, 2009 04:39 |  #25

Great comp.. might have to give it a go


www.sidd-rishi.com.au (external link)http://www.sidd-rishi.com.au (external link)

  
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Nighthound
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Jan 28, 2009 08:10 |  #26

troypiggo wrote in post #7201918 (external link)
Quick questions - the core (Trapezium) of the nebula isn't blown out considering such long exposures. Is this attributable to the Ha data? Or did you take some shorter exposures not mentioned above?

And is all the lightness outside the main nebula also part of it? Normally I've seen images this is all black, but you appear to have some nebulosity everywhere in this image.


Troy, sorry to cut in but here's a link to demonstrate the amount of nebulosity in this region. I couldn't find the entire constellation shot done by Mr. Gendler but it's mind boggling to see if you can find it. That one is something like 24 hours of exposure. Not sure exposure time on the one seen here:

http://antwrp.gsfc.nas​a.gov/apod/ap070106.ht​ml (external link)


Steve
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troypiggo
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Jan 28, 2009 14:20 |  #27

Never seen such long exposures on the whole constellation like that. Amazing. I know about Barnard's Loop etc, but not all that background nebulosity. Something to aspire to, hey? :)


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xtrematrix
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Jan 28, 2009 20:19 as a reply to  @ troypiggo's post |  #28

Amazing shot stargazr. You have inspired me to try and figure out my telescope enough to get something that even remotely resembles yours :)




  
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R ­ Hardman
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Jan 28, 2009 20:48 |  #29

Speechless....


"Whatever you can do to avoid Photoshop is worth it"
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strgazr27
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Jan 29, 2009 00:27 |  #30

THANK YOU EVERYONE !! for the kind replies. It makes all the time and effort worthwhile. This is a shot I did last night with the 70-200L at f/4. I used a 12nm Hydrogen alpha filter to give those of you who were wondering an idea of how much nebulosity is really in the area. This is 2 hours worth of 10 minute subs.

IMAGE NOT FOUND
IMAGE IS A REDIRECT OR MISSING!
HTTP response: 404 | MIME changed to 'text/html' | Byte size: ZERO


This is a wider FOV taken with the 70-200L but shot with the 40D and just a CLS light pollution filter. TONS of nebulosity in this area :)

IMAGE NOT FOUND
IMAGE IS A REDIRECT OR MISSING!
HTTP response: 404 | Byte size: ZERO

Gripped 40D - 17-40L - 70-200 f/4L - Gitzo GT0531 Mountaineer - Astrotrac TT320X-AG
www.strgazr27.zenfolio​.com (external link)

http://www.stonyhillob​servatory.com (external link)

  
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Challenge #3, The Sword of Orion
FORUMS Photo Sharing & Visual Enjoyment Astronomy & Celestial 
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