Show Posts

This section allows you to view all posts made by this member. Note that you can only see posts made in areas you currently have access to.


Messages - sreilly

Pages: [1] 2 3 ... 53
1
Announcements / Re: New Image, PuWe 1, and related contents
« on: 2019 December 24 07:41:41 »
Merry Christmas Vicent! And what a wonderful present indeed. You can't appreciate this image until you see the largest version and note all the galaxies this image contains. Stunning image with so much detail. Looking forward to spending time with the files and scripts.

-Steve

2
General / Re: Calibration Basics
« on: 2019 December 23 12:10:46 »
As a followup to help better explain I've attached two screen captures showing the same single flat frame calibrated with and without the bias master. With shows the column defects while the no bias calibration does not have them. I may also need to show two light images calibrated with and without these flats to better express this.

3
General / Re: Calibration Basics
« on: 2019 December 23 12:08:14 »
As a followup to help better explain I've attached two screen captures showing the same single flat frame calibrated with and without the bias master. With shows the column defects while the no bias calibration does not have them. I may also need to show two light images calibrated with and without these flats to better express this.

4
General / Calibration Basics
« on: 2019 December 23 11:52:36 »
I came across an issue with my calibration process back a while ago and found that a bad master dark was to blame. This made me rethink my master frame thinking....again. I have downloaded, printed out, and reread the paper on Acquisition and Processing Master Calibration Frames a number of times and thought I had a good handle on it. Let me explain how I usually do this to see where I'm either wrong or right:

I take usually 100-200 bias frames on bad weather days. For my camera I was long ago advised that bias frames were sensitive to temperature on this model so I have always taken my biases at the same temperature which is easy as I always image at -20 and darks by the same temperature as well for the exposure times that I used being 900 and 1800 seconds. So I generally take 20-75 or so darks depending on weather to create my masters.

My flats are taken with a minimum of 16 per filter per side of pier (I use a rotator) meaning I have E/W side filter masters when finished. They do make a difference for me at least.

I calibrate the flats usually by using the settings as seen in the Master Calibration Frames Acquisition and Processing PDF found on the PI sight under Resources https://pixinsight.com/tutorials/master-frames/index.html.

Recently I noticed that my master flats were showing pixel column defects in them which was then noticed on images when calibrated. So I stooped using the Master Bias frame and only now use the Master Dark set to Optimize which eliminated those column defects. My thinking is that since I'm not scaling the darks in my image calibration I shouldn't need the bias frames. So with my process do the instructions in the referenced PDF apply to my method? Do I actually need Master Bias frames at all?

Keep in mind that my flat frame exposures are under 2-6 seconds most for NB filters and just over 1 second for LRGB filters.

5
Announcements / Re: PixInsight 1.8.8-3 Released
« on: 2019 December 15 10:42:12 »
Thanks Juan, I figured it was likely a me issue. I'll look into that folder and make sure only the unzipped scripts are there and then only one copy. I may have the unzipped .js file in the root of that folder and the file again in its respective folder.

6
Announcements / Re: PixInsight 1.8.8-3 Released
« on: 2019 December 15 08:06:37 »
Thanks for the update Juan. I seem to have been able to install extra scripts multiple times....? I think I’ve found a bug when in loading scripts can duplicate the script in the menu. I save all my “extra” scripts in a separate folder under My Documents simply called PI Scripts. This way anytime I need to uninstall PI for a new version I can just go to this folder to load all the “outside” scripts in one shot. But seems that I had done this several times as I realized a few were missing and did a Everything search finding them outside my PI Scripts folder and moved them over, then installed but it seems to have found all again. A number of scripts are listed more than once now. Not sure what the appropriate step should be now to correct this. I did notice that when I installed the scripts after say it found XX number of scripts it would go into a very long search which I would finally have to cancel.

7
General / Re: Stretching 43 Comet Images....
« on: 2019 December 08 11:12:50 »
Thanks Rob,

I had done that thing I'm not supposed to an "assumed" it was embedded in PI but with you guidance I'm on the right path. I did get it to work and created a folder on the root drive , found the executable in the /Bin folder and pointed it to that location. Now to get the speed adjustment to a bit slower. I was hoping it would read from the Blink process but maybe not. The process set to 0.10 gave a good smooth look but it doesn't quite get there in the avi file. Need to get in the shop and plane some boards....maybe play a bit later.

Thanks Again,

Steve

8
General / Stretching 43 Comet Images....
« on: 2019 December 08 06:18:26 »
So going back to 2015 I discover some long forgotten images I took of Comet Lovejoy and they have been processed but now that I've found them I want to make a video (avi). I looked at the feature in Blink and it went through the stack but each time it fails to execute an external program to complete. So now I just want to get as far as stretching these frames. I have no issues with the automatic strecth feature used in Blink but is there a way to use this and then save the stretched images. I realize the blink images are just screen stretched but can they or is there a process to strect a batch of like frames at one time versus doing 43 one at a time?

9
General / Re: M76 Narrowband and LRGB Data
« on: 2019 November 22 11:28:17 »
While I still play with the LRGB data I realized I hadn't preformed any HDRW and I usually do 2 iterations typically being 3 and the 5 layer. This definitely brought out faint detail in the luminous data.

10
General / Re: M76 Narrowband and LRGB Data
« on: 2019 November 22 06:13:29 »
John I did attempt to do deconvolution but my attempts were proving futile. I kept getting sharper stars but ghosting around them. Not dark ringing but rather light buffers, if that makes any sense. Maybe I'll try again and poty an example. I usually use 0.03-0.04 as the dark setting but I'll post a screen capture of the process once I setup a few previews and run a few tests.

-Steve

11
General / Re: M76 Narrowband and LRGB Data
« on: 2019 November 21 19:16:18 »
And the LRGB image

12
General / M76 Narrowband and LRGB Data
« on: 2019 November 21 19:15:07 »
So I've got a ton, well a fair amount, of data on M76 with the following:

16 - 15 minute red
16 -15 minute green
23 -15 minute blue
71 - 15 minute luminance

42 -30 minute Ha
41 -30 minute S2
40 - 30 minute O3

I have followed Karyon's tutorial at https://www.lightvortexastronomy.com/tutorial-narrowband-hubble-palette.html and came up with the S2HaO3 as attached.

The LRGB of M76 is also attached. What I'm curious about is if the data can be combined to show more detail in the nebula. I'm as green as they come with narrowband processing and maybe M76 wasn't a good target but.....any suggestions? I mean this is 61 .5 hours of NB data and 31.5 hours of LRGB. What could be done with 93 hours of total data. Just for the record, these were imaged with an STL-11000 CCD through a 12.5" OGS RC telescope on an AP1200GTO mount.

Suggestions, links to tutorials, anything?

Thanks,

Steve

13
General / Re: Star Alignment Fails
« on: 2019 November 02 05:13:23 »
John/Juan,

I did a deep dive on the data and while it was indeed all reasonably near considering dithering I did find that the past few days data was soft on focus. I also discovered that focus was failing in the automated imaging process. ACP was calling for focus but focus was being attempted but failing due to my having installed a recent version of FocusMax and somehow the focuser not being configured for the RoboFocus driver. So, yes it's my fault and I apologize for the mini rant. I've just gotten so use to Windows 10 updates messing with programs and so forth that I was at my wits end. My home computers other than laptop and observatory are Windoze 10 Pro. The computers in my observatory aren't Windoze 10 but rather Windows 7 Pro and the time is fast coming that the new ones will need to be and that won't be fun.  But no matter, nor reason to react here.

The focusing issue is resolved and I should have sharper images that will again easily align. I've attached a screen capture that shows an older image (left) compared to one taken last night (right) after FocusMax was corrected. The solution is to have the data set taken again.

14
General / Re: Star Alignment Fails
« on: 2019 November 01 14:18:40 »
Well that wasn't working well. I'm sorry but star alignment was working well and now it isn't. That doesn't feel like an improvement at all. If I need to reinstall an earlier version to get functionality back I guess that's what I'll need to do or use another program to get around this. Of course that means I have to convert my images aback to Fits because as far as I can see no one uses the XSIF format. I probably sound a bit peeved but after having issues with Windows 10 updates I feel like I'm losing control over my own computer. 

John I do appreciate the reply and suggestions. This makes two sets of data that I'm having serious issues with and don't have the time to chase down this sort of problems. Juan what gives? What do I need to do to get back to where I was?

Pages: [1] 2 3 ... 53