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Topics - jkmorse

Pages: [1] 2 3 ... 5
1
General / 11002 vs 6303E
« on: 2018 September 04 15:30:20 »
Hey folks,

I have been shooting with an SBIG STXL 6303E for some time now and while it has great sensitivity, dealing with the blooms is, frankly, a royal pain in the behind.  Since I am not and will not be doing astrometry, using a CCD with an anti-blooming gate is not really an issue.  In order to control costs, I want to stay in SBIG’s STXL line so I can use the same filters, filter wheel and AOX set up.  That means I am looking at the 11002, mainly due to chip and pixel size.

Can folks who use the 11002 give me their thoughts and also would love to hear from anyone who has experience with a direct comparison.

Thanks all,

Jim

2
General / Where did arcsinh stretch go?
« on: 2018 September 02 18:27:05 »
Can't seem to find the link any longer.  Is it still available?

Thanks,

Jim

3
Bug Reports / Problems in newly created Dark Masters
« on: 2018 February 05 16:01:25 »
Juan et al.,

Up until 2 years ago I had issues with the way MaximDL writes FITS files.  The problem was that it often truncated the image to only 32,000 bits instead of the normal 65,000; thereby trashing all of the higher end signal.  By working out the exact settings in MaximDL to avoid the problem, it went away. 

But lately it’s made a comeback of sorts.  RGB images are fine, so far, I am guessing because they have stars that fall into the upper range even before stretching.  But my narrowband images are a mess.  I can do a work around since the issue materializes when I calibrate my subs so if I skip calibration I can still use the files, but that is not ideal.

I have tracked the problem to some newly created master darks.  Something in the way PI is writing the master darks under 1.8.5 (at least since mid-January when I took the darksubs and made the masterdark) is reintroducing the problem.  Attached is a file including everything you should need to test the problem, including new and old master darks, other calibration frames, and new darksubs, as well as a set of 18 OIII subs:

https://www.dropbox.com/sh/q1bum458ba460tk/AABAlbPbOh03cRQU2xhWThJfa?dl=0

I am using the latest version of PI for Windows and an up to date Windows 10 computer.  Let me know if you need anything else.

Thanks,

Jim

4
Image Processing Challenges / Can Local Normalization Fix This?
« on: 2017 September 28 14:52:22 »
Hey Folks,

See the images below.  As you can see from the blue integration, I had something really funky going on during image acquisition.  The problem has been solved but I hate to waste 18 hours of data.  You can see from my finished image that I did what I could with the standard PI tools, which was way better than I ever hoped I would be able to do.  But does Local Normalization offer me another means of attack.  Obviously, each of the subs is not as bad as the blue integration and in some files, mostly from my green filter, the problem doesn't exist so I have a workable reference frame.  My question is, how should I go about trying?

Thanks,

Jim

5
General / How do I . . . . ?
« on: 2017 September 25 09:34:58 »
Hey folks,

I have a small but irritating issue.  I am using a Dell UP3216Q workstation for my image processing but this has been an issue no matter what monitor I have used.  On the screen, when I open am image, the first size is too small to see details so I immediately zoom.  But the zoom takes the image from too small to just too big so it doesn't quite fit.  Its ok horizontally but is always just a bit too big vertically so I have to do a bit of scrolling to see the whole image.

Is there a way to adjust the settings so that I can make the zoom a hair smaller?

Thanks,

Jim 

6
General / Resizing PI Window and Icons
« on: 2017 March 29 16:13:04 »
Hey folks,

Should know this but have a new monitor (Dell UP3216Q) with resolution of 3840 x 2160, however, my PI window and icons simply scaled up to take up the same space as my old system.  What do I need to do to reduce the size of the icons, titlebars, etc.

Thanks,

Jim

7
Gallery / Tadpoles in Space!!
« on: 2016 December 05 06:15:04 »
First NB test image with my new rig: 

http://astrob.in/274875/0/

8
General / Going home to Luminance sets
« on: 2016 November 06 13:52:23 »
Hey folks,

After years of shooting RGBs and building synlums, I am finally going home to LRGB imaging, at least for galaxies.  After lots of reflection, I came to the conclusion that RGBs (and the NB equivalents) are fine for nebulosity and star fields, but for complex galaxies, you really do need those luminance frames.  Here is the results of going home:

 http://astrob.in/271200/0/

Very happy with the detail and, as compared to my RGB stack, the IFN was much clearer in the Lum set as well, though I wasn't intending to emphasize that this time around.

Would love to hear others' views.

Best,

Jim

9
General / TGVDenoise, TGVRestoration & TGVInpaint
« on: 2016 August 17 11:24:33 »
Hey Folks,

These new tools have been around for months now but I have yet to see many posts detailing their usage.  TGVDenoise is pretty straightforward following using Vicent's description in its release post here:

http://pixinsight.com/forum/index.php?topic=8970.0

But he doesn't go into much detail on Restroration or Inpaint.  Has anybody gotten comfortable enough in using these tools to give the rest of us some ideas on how to get the most out of them?  I have seen mention of TVGInpaint for star reduction but not much else.  I am particularly interested in a primer on TGVRestoration if anybody has one.

Any thoughts would be most appreciated.

Thanks,

Jim

10
General / Dual Monitors
« on: 2016 August 09 09:22:13 »
I know I have seen this discussion before but can't find it.  I am thinking about adding a second monitor for processing in PI but what is the best way to set up that workstation or at least what are some suggestions on how to maximize the benefits in PI.

Thanks,

Jim

11
Gallery / M16 & M63 - Early efforts from NMSkies Site
« on: 2016 June 28 20:35:24 »
Hey Folks,

I wanted to share some of my early efforts from my new site at New Mexico Skies Observatory, now that I have my SBIG STXL 6303 up and running.  Not perfect but show lots of promise for the future.  One thing is certain, I could not have produced these with anything other than PixInsight so a huge thanks to Juan and the team for a superb product.

http://astrob.in/253574/0/
http://astrob.in/253402/B/

Best,

Jim
 

12
Gallery / Another view of NGC 2264 Region
« on: 2016 January 16 11:11:36 »

13
Gallery / Deep filed M42 Region
« on: 2015 December 29 17:26:09 »
Hey folks,

Here is a different look at a familiar face, a deep field of the M42 region to pull out all the dust and nebulosity and putting the main features into proper context.  I couldn't imagine being able to do this without the tools in PI. 

Hope you enjoy: http://astrob.in/234767/0/

Best,

Jim

14
Gallery / Horsehead Region
« on: 2015 December 21 19:33:51 »
Another recent image.  Been done a million times but still love the colors.  Again, next time will get the focus sharper now that I have the electronic focuser installed.

Consists of 150 subs (50 each in RGB) 120 sec iterations, combined with a synlum using the SHO-AIP script.   Shot with my e130D/STT8300 system:

http://astrob.in/233431/0/

Best,

Jim

15
Gallery / Perseus Double Cluster
« on: 2015 December 21 12:55:26 »
Hey Folks,

Haven't posted in a while since weather has been awful but finally able to get some imaging in last week.  Trying some new things, including expanding number of subs.  This one made from 60 each in red, green and blue for a total of 180.  Just added an electronic focuser so next images should be sharper, but the added subs really help with the color saturation.  As usual, this was RGB capture only, no lum, and in this case, not even a synlum (after all, how much detail do you need in a star field).

System: Tak e130D/SBIG STT8300 with self guiding filter wheel.  Paramount MX, SkyX Camera Add-on.  Note I used a 3 setting in Drizzle so this is a large image.

http://astrob.in/233383/0/

Best,

Jim   

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