Creating a mosaic in Pixinsight 1) Stack the images in individual files 1a) If you didn't stack in Pixinsight ... Go to Image Analysis to solve it 2) Prepare to eliminate the gradient and to correct the color ... Perform the "SpectrophotometricFluxCalibration and then perform a "MultiscaleGradientCorrection" 2a) perform the color correction - perform a "SpectrophotometricColorCalibration" 3) Perform a Histogram transformation on each image then save the images in a folder of your choice 4) Go to Script - Mosaic - Mosaic by Coordinates Click on "Add Files" and import your newly created images you just saved with the post script of something, such as _registered. Leave all settings as default ... Select a folder in "Output Images" 5) Merge the images ... Go to Process - All Processes - GradientMergeMosaic Click on "Add Files" and import your latest files that you just saved with the "_registered" suffix. (Play with AVERAGE and OVERLAY but in most cases, AVERAGE will work just fine) In about 4-5 minutes, the final full image will be displayed. From there, you can modify the way you are comfortable with. ******************* PixInsight 1.9.2 Features
Ctrl key - Drag Synchronize images Windows key - Drag Copy Astrometric Data Shift key - Drag Pop up over window Atl key - Drag Copy STF
Excellent tutorial Pat. Those mosaics came out great.... and seamless. I haven't done a mosaic for ages but will be using your video as a reference when I do. Clear skies.
Thanks, Logan. I hope you get great success from it. I am assuming you have upgraded to Pixinsight 1.9.2. You will need that for some of the new functions. 9 clear nights in a row? Did you make some deal with the devil to get that? Ha Well, here's for more clear skies.
@HeavenlyBackyardAstronomy It's just a little bit of snow, and that is around 30 cm 😀 In regards of clear nights, it's been a record season so far, how about for you?
Pat, thank you for this very useful video. I use the ASIAIR+ on my system, but the capture process seems to be very similar to the one you demonstrated in NINA. Over a year ago I did a 2x2 mosaic of the Veil Nebula and stacked and combined in APP. When I try to process in PixInsight, though, Image Solver won’t give me an astronomical solution for it. So I may redo the entire thing in PixInsight following the steps in your process. Thank you again, and Happy New Year!
Thanks for watching my video "ABC". Sometimes in Pixinsight, the "image solver" refuses to cooperate. I found that if you know the R.A. and Dec of your target and enter it into the "solver" and the date it was recorded, it will have a better chance of plate solving it. Also, to help it along, it needs as many cclean stars as possible so I perform "Blur Exterminator" on the image first to roud out the stars. Happy New Year to you too.
Hello,read on another sight that you leave your scope outdoors all the time covered of course ,even during rain storms ,humid ,or cold weather?...and I see you have multiple scopes.
Hi Tom, That is correct. I have three rigs using the Celestron CGX mount, SkyWatcher EQ6-R Pro and the ZWO AM3. I only dismantle the rigs during the threat of hurricanes or possible tornado outbreaks. I do keep them covered and do bring inside the cameras and mini-computer after the sessions. I place a large beach towel over the scope then cover them with a 365 insulated heavy-duty cover. I've been doing this since 2018. I figured this is better than building an observatory where the temperature fluctuation is much more than just using the covers, plus the chance for mold and mildew in an observatory. And let's not discuss the cost involved or spiders and snakes that would love to make a home there. Thank you for your comments and question.
Creating a mosaic in Pixinsight
1) Stack the images in individual files
1a) If you didn't stack in Pixinsight ... Go to Image Analysis to solve it
2) Prepare to eliminate the gradient and to correct the color ... Perform the "SpectrophotometricFluxCalibration and then perform a "MultiscaleGradientCorrection"
2a) perform the color correction - perform a "SpectrophotometricColorCalibration"
3) Perform a Histogram transformation on each image then save the images in a folder of your choice
4) Go to Script - Mosaic - Mosaic by Coordinates
Click on "Add Files" and import your newly created images you just saved with the post script of something, such as _registered.
Leave all settings as default ... Select a folder in "Output Images"
5) Merge the images ...
Go to Process - All Processes - GradientMergeMosaic
Click on "Add Files" and import your latest files that you just saved with the "_registered" suffix.
(Play with AVERAGE and OVERLAY but in most cases, AVERAGE will work just fine)
In about 4-5 minutes, the final full image will be displayed. From there, you can modify the way you are comfortable with.
*******************
PixInsight 1.9.2
Features
Ctrl key - Drag
Synchronize images
Windows key - Drag
Copy Astrometric Data
Shift key - Drag
Pop up over window
Atl key - Drag
Copy STF
Excellent tutorial Pat. Those mosaics came out great.... and seamless. I haven't done a mosaic for ages but will be using your video as a reference when I do. Clear skies.
Thanks, Logan.
I hope you get great success from it.
I am assuming you have upgraded to Pixinsight 1.9.2. You will need that for some of the new functions.
9 clear nights in a row? Did you make some deal with the devil to get that? Ha
Well, here's for more clear skies.
haha yes well I don’t remember making such a deal but now you have me worried 🤣.
Best wishes and good health for 2025 Pat and especially clear skys
Greetings from Belgium : Frank Bogaerts
Right back at you, Frank.
Thank you for watching my video
Best wishes for the new year and great video. I will have to try mosaic soon 😀
Thank you, Martin.
How's the snowfall been going? I hope you have some clear nights.
@HeavenlyBackyardAstronomy It's just a little bit of snow, and that is around 30 cm 😀 In regards of clear nights, it's been a record season so far, how about for you?
@@frosthastrophotography I got a string of good luck ... several nights of clear skies with no lunar interference with more on the way
@@HeavenlyBackyardAstronomy That is great! Hope it continues like that.
Pat, thank you for this very useful video. I use the ASIAIR+ on my system, but the capture process seems to be very similar to the one you demonstrated in NINA. Over a year ago I did a 2x2 mosaic of the Veil Nebula and stacked and combined in APP. When I try to process in PixInsight, though, Image Solver won’t give me an astronomical solution for it. So I may redo the entire thing in PixInsight following the steps in your process. Thank you again, and Happy New Year!
Thanks for watching my video "ABC".
Sometimes in Pixinsight, the "image solver" refuses to cooperate. I found that if you know the R.A. and Dec of your target and enter it into the "solver" and the date it was recorded, it will have a better chance of plate solving it. Also, to help it along, it needs as many cclean stars as possible so I perform "Blur Exterminator" on the image first to roud out the stars.
Happy New Year to you too.
Hello,read on another sight that you leave your scope outdoors all the time covered of course ,even during rain storms ,humid ,or cold weather?...and I see you have multiple scopes.
Hi Tom,
That is correct. I have three rigs using the Celestron CGX mount, SkyWatcher EQ6-R Pro and the ZWO AM3. I only dismantle the rigs during the threat of hurricanes or possible tornado outbreaks. I do keep them covered and do bring inside the cameras and mini-computer after the sessions. I place a large beach towel over the scope then cover them with a 365 insulated heavy-duty cover. I've been doing this since 2018. I figured this is better than building an observatory where the temperature fluctuation is much more than just using the covers, plus the chance for mold and mildew in an observatory. And let's not discuss the cost involved or spiders and snakes that would love to make a home there.
Thank you for your comments and question.
How much are you stretching it when you perform the histogram transformation? Do you just apply the autostretch to it?
Hi Rich,
I only perform the standard autostretch before doing the histogram transformation.
Thank you for watching my video.
Clear Skies