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Alex Post
Pooh-Bah


Reged: 09/24/08

Loc: Iowa, USA
Re: AP Images Taken with Original NexStar new [Re: Alex Post]
      #4839685 - 10/02/11 04:16 PM

This post could go in either NexStar or the Graduates thread, but I decided to place it here for one reason. The reason being simplicity of the AP method for planetary imaging, which in my mind would help NexStar AP enthusiast the most.

Here is the scoop: prime focus imaging with a barlow. I am sure this method has been used in the past by NexStarians, but I "discovered" it for myself just very recently:



The idea is that you use the prime focus imaging setup, which requires as most of you know absolutely nothing other than a scope and a camera. I was doing most of my planetary imaging using Hyperion EPs. One idea was on my mind for a long time: what if I insert a barlow between the scope and the camera without an EP? Would it work at all? Again, I will claim complete ignorance how optics work.

I looked around and found a place that sells adapters to connect camera T-rings with standard 1.25" holders: Adapaters I did not know if this contraption is going to come into focus and bought the #TAPP, which is a combination of the #TADP and an extension tube. Long story short, the #TADP piece is all that is needed to connect the barlow and the camera.



Since I have the TV 5x barlow, it was a nice and astonishingly simple method of doing planetary imaging at just about the sweet spot for the Alt-Az mount with an F10 scope. What I mean by that is that since Alt-Az tends to drift every which way once you start magnifying, it's a balance between magnification and the speed of the image drifting outside of the frame. Here is a full frame image of the Jupiter with this method:



My technique is not up to Eric's new standard just yet, obviously, but I hope this simple method of prime imaging with barlow is known to a wide audience.


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flboy
Carpal Tunnel
*****

Reged: 08/10/10

Loc: De Leon Springs, FL
Re: AP Images Taken with Original NexStar new [Re: Alex Post]
      #4839957 - 10/02/11 06:22 PM

Wow Alex! Very nice indeed!!

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JB@DISL
newbie


Reged: 09/03/11

Re: AP Images Taken with Original NexStar new [Re: flboy]
      #4840277 - 10/02/11 09:34 PM

Ok, so here goes nothin!

For my first post here at CN I'd thought I'd entertain yall with an example of my first steps into AP. It's also my first attempt using DSS, M31:

3x 30 second images. Nexstar 8se, f6.3 FLR, Canon Rebel XT.
It might not look like much, but I'm pretty psyched about some of the dark bands I can see (on my good monitor at least). It's also my first attempt at a galaxy. I chose the 3 best of about 10 images total. I get a lot of scope shake due to the constant wind on the Island where I live. That's my biggest challenge at the moment. A few lessons learned, and many, many more to come.

And the token moon shot:


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BLINEAU
super member


Reged: 05/23/11

Loc: Paris, France
Re: AP Images Taken with Original NexStar new [Re: Alex Post]
      #4840687 - 10/03/11 03:50 AM

Quote:

I admit, I am not the sharpest tool in the shed, but trying to setup Batch/Macro mode in Registax is making me want to go kill myself. They state that it's easier to do it in version 6 than ever before. Eric, what do you use for your batch file processing for the animations?

I am processing them frames now by hand. I am on frame 3 out of 72.




Yes Alex, I use the Macro/Batch mode in Registax 6. Very easy in R6. I suppose you have seen this tuto : http://www.astronomie.be/registax/previewbatch.html

Eric


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Tel
Postmaster
*****

Reged: 03/31/06

Loc: Wallingford England
Re: AP Images Taken with Original NexStar new [Re: BLINEAU]
      #4840697 - 10/03/11 04:11 AM

Hi Alex,

Nice imaging from a nicely devised set-up ! Congratulations !

Your notes regarding magnification and image drift are, I believe, also particularly relevant to Kim's latest thread and support that which I replied in answer to his question on this particular phenomenon associated with Nexstar mounts.

Best regards,
Tel


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Tel
Postmaster
*****

Reged: 03/31/06

Loc: Wallingford England
Re: AP Images Taken with Original NexStar new [Re: Tel]
      #4840700 - 10/03/11 04:22 AM Attachment (67 downloads)

Hi Jake,

A very warm welcome to CN and to this particular forum.

Many congratulations too on your first image post. I saw what you meant about the dust lanes you'd also captured within M31 so made an attempt to bring them to the fore a little more. I hope you don't mind.

This small amount of processing also seems to have brought its satellite galaxy M32 to some prominence.

Best regards,
Tel


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Arthur Dent
Galactic Hitch-Hiker
*****

Reged: 10/23/08

Loc: South Yorkshire, UK
Re: AP Images Taken with Original NexStar new [Re: Tel]
      #4840765 - 10/03/11 06:43 AM

Hi Jake,

Welcome to the Forum



Those are two nice images and Tel's reprocessing has brought out those dust lanes.

Kudos to both of you


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Midnight Dan
Postmaster
*****

Reged: 01/23/08

Loc: Hilton, NY, Yellow Zone (Bortl...
Re: AP Images Taken with Original NexStar new [Re: Arthur Dent]
      #4840790 - 10/03/11 07:12 AM

Hi Jake & Welcome to our little corner of Cloudy Nights!

Nice job on M33 and the Moon! As you can see from Tel's reprocessing, you took a better image than you thought! Processing is half the battle with astrophotography and there's a ton to learn on that end of it! But it looks like you're enjoying getting started!

-Dan


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Skip
Starlifter Driver
*****

Reged: 01/23/08

Loc: Fort Worth, Texas, USA
Re: AP Images Taken with Original NexStar new [Re: Alex Post]
      #4841369 - 10/03/11 01:11 PM

Beautiful Jupiter, Alex!!

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JB@DISL
newbie


Reged: 09/03/11

Re: AP Images Taken with Original NexStar new [Re: Tel]
      #4842136 - 10/03/11 07:31 PM

Hey guys, thanks for all the warm welcomes!
Quote:

I saw what you meant about the dust lanes you'd also captured within M31 so made an attempt to bring them to the fore a little more. I hope you don't mind.



I don't mind at all, Tel. That's much more like what I was looking for. If you don't mind me asking, what did you do to get that effect?

I've gone through a few tutorials on some processing techniques, but not nearly enough. Also, I shot all my images for this in JPEG instead of RAW, so I didn't have as much data to work with to in the first place.


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Smittty692k4
Pooh-Bah
*****

Reged: 07/05/11

Loc: East Bernard, TX
Re: AP Images Taken with Original NexStar new [Re: JB@DISL]
      #4842314 - 10/03/11 09:11 PM Attachment (47 downloads)

Thats all I could get out of it. At the end of processing, you either can sacrafice dust lanes and dark for brightness and discoloration. But Still a nice challange!!

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Alex Post
Pooh-Bah


Reged: 09/24/08

Loc: Iowa, USA
Re: AP Images Taken with Original NexStar new [Re: Smittty692k4]
      #4842702 - 10/04/11 01:17 AM

Pretty amazing how much data is in 3x 30sec shots. Matt's processing is quite remarkable.

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BLINEAU
super member


Reged: 05/23/11

Loc: Paris, France
Re: AP Images Taken with Original NexStar new [Re: Alex Post]
      #4842745 - 10/04/11 02:13 AM

Hi guys !

Turbulence was fair in Paris last night :


FileFormat=SER
Camera=i-Nova PLA-Mx
BeginRec=2011-10-04T03:51:30.515
EndRec=2011-10-04T03:51:54.218
ExpTime=25ms
ImageDimensions={Width=320, Height=240}
Resolution=BIN
SavedFrames=1200 (buffered)
ReadoutMode=8,FAST
Gain=259
BlackLevel=0
FilterWheel=
Filter= (slot 0)
Origin=PlxCapture




FileFormat=SER
Camera=i-Nova PLA-Mx
BeginRec=2011-10-04T04:12:14.828
EndRec=2011-10-04T04:12:38.734
ExpTime=25ms
ImageDimensions={Width=320, Height=240}
Resolution=BIN
SavedFrames=1200 (buffered)
ReadoutMode=8,FAST
Gain=219
BlackLevel=0
FilterWheel=
Filter= (slot 0)
Origin=PlxCapture




FileFormat=SER
Camera=i-Nova PLA-Mx
BeginRec=2011-10-04T04:27:28.812
EndRec=2011-10-04T04:27:53.718
ExpTime=25ms
ImageDimensions={Width=640, Height=480}
Resolution=FULL
SavedFrames=1200 (buffered)
ReadoutMode=8,FAST
Gain=379
BlackLevel=0
FilterWheel=
Filter= (slot 0)
Origin=PlxCapture


Have a good day

Eric


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Tel
Postmaster
*****

Reged: 03/31/06

Loc: Wallingford England
Re: AP Images Taken with Original NexStar new [Re: JB@DISL]
      #4842800 - 10/04/11 04:39 AM

Quote:

Hey guys, thanks for all the warm welcomes!
Quote:

I saw what you meant about the dust lanes you'd also captured within M31 so made an attempt to bring them to the fore a little more. I hope you don't mind.



I don't mind at all, Tel. That's much more like what I was looking for. If you don't mind me asking, what did you do to get that effect?

I've gone through a few tutorials on some processing techniques, but not nearly enough. Also, I shot all my images for this in JPEG instead of RAW, so I didn't have as much data to work with to in the first place.




Hi Jake,

Thank you for not minding my playing with your original image.

What did I do? Not much really.

I use an old but serviceable CS2 version of Photoshop and in this case, merely applied Levels and Curves to bring out the detail in your image a little more plus the use of the Photo Filter (blue) application to give it, in my view, a more appealing overall colour. That was it !

As to its capture in Jpeg, well, you obviously appreciate that Raw would have been better.

Looking forward to seeing more of your work.

Best regards,
Tel


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Skip
Starlifter Driver
*****

Reged: 01/23/08

Loc: Fort Worth, Texas, USA
Re: AP Images Taken with Original NexStar new [Re: Tel]
      #4843360 - 10/04/11 11:43 AM

Tel and Matt,

Good work! Probably are not going to get anymore out of that jpeg file. Since saving in a jpeg compresses the image by getting rid of some of the data, there probably isn't much left there. I've stopped even trying to get anything out of jpeg files. Your results are MUCH better than mine would be!


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Smittty692k4
Pooh-Bah
*****

Reged: 07/05/11

Loc: East Bernard, TX
Re: AP Images Taken with Original NexStar new [Re: Skip]
      #4843542 - 10/04/11 01:27 PM

I owe my data processing to you Skip. All I did was follow Neil's steps the best I could. I made a flow chart like his to use.
The saturation killed it. Thats only 1 itteration. Anymore and the light pixels in the galaxy became RGB'd in color


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Geo.
Carpal Tunnel
*****

Reged: 10/01/08

Loc: Upstate NY
Re: AP Images Taken with Original NexStar new [Re: Smittty692k4]
      #4845034 - 10/05/11 11:32 AM Attachment (64 downloads)

This will give you an idea of the limitations of the 1.25" rear port of the smaller Celestron SCTs. Only the very high line DSLRs and astro cams use the 35mm film format. APS-H is limited to a Canon midline model. All other Canons use the APS-C sensor. The new 4/3rds cameras are interesting, but still very expensive. The KAF1603 is used in the SBIG ST-8 and the 0402 in the ST-7.

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Alex Post
Pooh-Bah


Reged: 09/24/08

Loc: Iowa, USA
Re: AP Images Taken with Original NexStar new [Re: BLINEAU]
      #4846668 - 10/06/11 08:38 AM

Quote:


Yes Alex, I use the Macro/Batch mode in Registax 6. Very easy in R6. I suppose you have seen this tuto : http://www.astronomie.be/registax/previewbatch.html

Eric



Thanks Eric, finally figured it out. Processing in progress, a few more hours to go.

How do you align images into animation? Photoshop?


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BLINEAU
super member


Reged: 05/23/11

Loc: Paris, France
Re: AP Images Taken with Original NexStar new [Re: Alex Post]
      #4846815 - 10/06/11 10:17 AM

Quote:

Quote:


Yes Alex, I use the Macro/Batch mode in Registax 6. Very easy in R6. I suppose you have seen this tuto : http://www.astronomie.be/registax/previewbatch.html

Eric



Thanks Eric, finally figured it out. Processing in progress, a few more hours to go.

How do you align images into animation? Photoshop?




Hi Alex!

For the animation below, I aligned with GIMP 2.6.


For this, the technique is different (WinJUPOS):


I'm still learning the technique, it's the first time I use WinJUPOS for an animation. 11 images (not all the 53 frames used for the first animation), Jupiter is not a perfect circle, satellites and the shadow disappears ... Much work to be done to achieve what I want to do!

Eric


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Smittty692k4
Pooh-Bah
*****

Reged: 07/05/11

Loc: East Bernard, TX
Re: AP Images Taken with Original NexStar new [Re: BLINEAU]
      #4846845 - 10/06/11 10:26 AM

If there was such a thing as perfect animation, the second one is as close as Ive seen. Way to wow us again Eric!!

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