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Astrophotography and Sketching >> Beginning and Intermediate Imaging

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Yoda
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Reged: 06/12/11

M42 imaged through an Orion 80ED Scope new
      #5755347 - 03/25/13 01:03 AM Attachment (81 downloads)

Here is an image stacked from my first captures of Orion from this winter. I am pretty new to Astro Imaging. I've only been out about 30 times in the past two years and over half of those trips sucked because the weather changed for the worse. Anyways, I thought I was pretty good but after looking at some of the submissions here ,I am feeling like I got lots to learn.

This image was stacked with about 5 light frames only. None of the other frames were used since I don't quite have the full grasp of stacking process. It was then process in LR3.

Image scope was an Orion 80ED, Pentax K5 DSLR, Orion SSAG with 80mm guidescope, and Sirius EQ mount.

Hope to get some feedback.


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Raginar
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Re: M42 imaged through an Orion 80ED Scope new [Re: Yoda]
      #5756001 - 03/25/13 11:47 AM

Looks like you had some good data. I took a similar picture with my ED80 too! Look up how to do background neutralization/color calibration with whatever software you're using. I think you might have clipped the black point which is why it looks 'too' black. Just remember your skies aren't black!

Thanks for sharing with us.


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NeilMac
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Re: M42 imaged through an Orion 80ED Scope new [Re: Raginar]
      #5756157 - 03/25/13 12:58 PM

Nice color and details !!

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Hilmi
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Re: M42 imaged through an Orion 80ED Scope new [Re: NeilMac]
      #5756245 - 03/25/13 02:03 PM

Phsycadelic colors, makes my want to pull out my Jimi Hendrix CDs

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Wouter D'hoye
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Re: M42 imaged through an Orion 80ED Scope new [Re: Hilmi]
      #5756255 - 03/25/13 02:08 PM

Great iamge. Though I believe you clipped the background. Never do that. Keep it a very dark grey but don't make it entirely black. Sometimes you'd be amazed how "not empty" space really is.

Kind regards,

Wouter.


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Yoda
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Re: M42 imaged through an Orion 80ED Scope new [Re: Wouter D'hoye]
      #5756278 - 03/25/13 02:18 PM

Thanks all and thanks for the input of the black skies. I will redo and post. I lost the created stacked folder when I recently upgraded my computer so I will have to start from scratch with the raw files I have. Hope I can attain the Psychedelic colors for Hilmi too. Try some trance music with it as well.

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Jeff2011
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Re: M42 imaged through an Orion 80ED Scope new [Re: Wouter D'hoye]
      #5756286 - 03/25/13 02:22 PM

Great shot for your first Orion neb. Can't wait to get my VX mount in so that I can try with my AstroTech 72ED. What software did you use to process? I would recommend Deep Sky Stacker with Star Tools. That seems to be the quickest come up to speed time combo for processing.

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Yoda
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Re: M42 imaged through an Orion 80ED Scope new [Re: Yoda]
      #5756290 - 03/25/13 02:25 PM

Forgot to add, most of my shots are at ISO 80 and I used one image that was filtered with an Astronomik UHC and one image filtered with orion OIII filter. I just stacked all as light frames using dss.

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Yoda
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Re: M42 imaged through an Orion 80ED Scope [Re: Yoda]
      #5756302 - 03/25/13 02:33 PM

Thanks Jeff. These small refractors seems to perform well. I stacked with DSS but haven't heard of Star Tools. I used LR3 after stacking

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Yoda
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Re: M42 imaged through an Orion 80ED Scope new [Re: Raginar]
      #5756754 - 03/25/13 06:26 PM

Quote:

Looks like you had some good data. I took a similar picture with my ED80 too! Look up how to do background neutralization/color calibration with whatever software you're using. I think you might have clipped the black point which is why it looks 'too' black. Just remember your skies aren't black!

Thanks for sharing with us.



Background neutralization/color calibration for light room is out of my mental grasp for now. The truth, I don't even know the appropriate color for M42. I did find a lot more Nebulousity in the clipped background lol
Thanks


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Jeff2011
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Re: M42 imaged through an Orion 80ED Scope new [Re: Yoda]
      #5756930 - 03/25/13 08:08 PM

Yoda,

Check out http://startools.org

The trial version is full featured except that you can't save the final result. I do recommend that you take flats and darks when processing with DSS. It makes a difference.


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TopherTheME
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Re: M42 imaged through an Orion 80ED Scope new [Re: Yoda]
      #5757103 - 03/25/13 10:01 PM

Quote:

Forgot to add, most of my shots are at ISO 80 and I used one image that was filtered with an Astronomik UHC and one image filtered with orion OIII filter. I just stacked all as light frames using dss.




You don't really want to use ISO 80 for imaging with the K-5, ideally you want it to be around 1200ish ISO as its been shown to provide the best noise performance. I have nearly the exact same setup that you do except I have a CG-5 instead of a sirius. That K-5 is nothing short of fantastic for AP btw.

Heres my first attempt at M42 (although its at ISO 6400, I was experimenting).


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Yoda
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Re: M42 imaged through an Orion 80ED Scope new [Re: TopherTheME]
      #5757247 - 03/25/13 11:34 PM

Jeff, I did some reading on star tools. Pretty excited to try it.
Topher, I love the k5. Your image @ISO 6400 looks really good. What's the time of the exposures and did you use flats or darks? As far as ISO 80, I thought it had the best signal to noise ratio, widest dynamic range, and lowest readout and amp noise. I am surprised by your comment but still learning. Great shot of m42!

Edited by Yoda (03/26/13 12:39 AM)


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tclehman1969
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Re: M42 imaged through an Orion 80ED Scope new [Re: Yoda]
      #5757389 - 03/26/13 01:50 AM

Cool image, I think!

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Yoda
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Re: M42 imaged through an Orion 80ED Scope new [Re: tclehman1969]
      #5757464 - 03/26/13 03:20 AM

Thanks? I Think!

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rflinn68Moderator
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Re: M42 imaged through an Orion 80ED Scope new [Re: Yoda]
      #5758272 - 03/26/13 01:35 PM Attachment (17 downloads)

Nice image for just 5 subs but there's a lot more there that was clipped. Just to give you an idea of whats there, here's an image I did with my 65mm Astro Tech scope. I am still pretty new at this also and did the same thing when I started out. There are some really good tutorials out there and Scott Rosens LLRGB method is one of the best IMO. I'm still trying to perfect it so it takes a while to get everything down. This is a wonderful hobby and cloudynights offers some great resources for people to learn. Good luck and keep it up!

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TopherTheME
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Re: M42 imaged through an Orion 80ED Scope new [Re: Yoda]
      #5758626 - 03/26/13 04:43 PM

Quote:

Jeff, I did some reading on star tools. Pretty excited to try it.
Topher, I love the k5. Your image @ISO 6400 looks really good. What's the time of the exposures and did you use flats or darks? As far as ISO 80, I thought it had the best signal to noise ratio, widest dynamic range, and lowest readout and amp noise. I am surprised by your comment but still learning. Great shot of m42!




The shot was created using 30 x 50sec exposures. Darks and flats were used. However, the image was shot under very poor seeing conditions so the K-5 + ED80 can certainly do better.

ISO 80 does deliver the best dynamic range, which if thats what you're going for then its the best place to be. Just make sure your histograms are in the right place so you're not clipping any data. However, the best SNR has been found to be at around 1200ish for the Sony sensor thats in the K-5.


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Yoda
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Re: M42 imaged through an Orion 80ED Scope new [Re: TopherTheME]
      #5759323 - 03/26/13 10:34 PM

Hi rflinn68 thanks and great image! Some motivation. Anyways, I played around with Star Tools a bit (Jeff's recommendation)and you are correct. I pretty much clipped the frills of M42 like shaving the head of a hot woman. I did not buy Star Tools because I want to try Pixinsight as well. I will re post m42 when it is properly processed to show my improvement.
Topher you have convinced me to try ISO 800. I actually don't know how to get ISO 1200 on the K5. If anything,800 will greatly reduce my sub times. Also, if I start shooting higher ISO, I will have to learn how to do darks and flats. I figured that at low enough ISO, I wouldn't need darks. Also, do you know if the built in High ISO NR (dark F subtraction) is a substitution for stacking darks on DSS?
PS. I am glad I posted on this site. I am getting so much info.


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Yoda
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Re: M42 imaged through an Orion 80ED Scope new [Re: Yoda]
      #5759332 - 03/26/13 10:36 PM

rflinn68 is your image done using Scott Rosens LLRGB?

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rflinn68Moderator
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Re: M42 imaged through an Orion 80ED Scope new [Re: Yoda]
      #5759648 - 03/27/13 07:13 AM

Quote:

rflinn68 is your image done using Scott Rosens LLRGB?




This one was not but I highly recommend it. I cant even tell you what I done on this one. Just started slowly stretching it. I also have Annie's Astro Actions that will help save you some time. It is very cheap and from what I can tell is similar to Carboni's Astro Tools.


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