Recent Articles in Fundamentals

This is part 2 of the Calibration primer that will set up an understanding of Manual Calibration and more. 

Manual Calibration is in most cases synonymous with WBPP. Learn all about calibration in general and then compare and contrast the differences in the two methods. Big reveal, numerically there are none- but one method is better for beginners... 

This section describes the use of Masked Stretch and highlights some of its benefits as well as characteristic consequences/artifacts.

Dark Frame Optimization example and all about CMOS sensors that REQUIRE Flat Darks! This section follows the previous explanation of Calibration of Data and explains how Master Dark frame optimization works. Then for all CMOS users that have variable electronic signatures... see why you have to use Flat Darks for these sensors!

Using a pedestal to prevent over-subtraction of dark frames is a common necessity for narrowband imagery. In the video learn what to look for and how to use it. 

Here is a perfect example that shows how DBE works in detail with samples... and you can "hijack" the behavior for your own evil purposes (insert maniacal laughter)... An exclusive Adam Block Studios kind of video.

Here is the latest and greatest version of Selective Rejection, an Adam Block innovation. Harmut Bornnemann added a small feature to his GAME script (at my request) that enables this new and improved way to reject artifacts in images. 

It is not uncommon that the names for filters do not match. This will cause a error in WBPP and other places. This quick lesson shows how to deal with this.

This lesson comes from Office Hours with Adam. Here a gentleman is having problems getting his flats to work. I demonstrate what to look for- especially big red flags!

The mask generating Script by Harmut Bornnemann has spectacular new capabilities. 

Here is a PixInsight Forum response that demonstrates the nature of Cosmetic Correction, Star Detection, and SubFrameSelector all in one sweet small example. 

This final section (perhaps I do more demonstrations in the future?) shows an "advanced" example. If you already made it through the previous sections- you might enjoy this as a test of your understanding. Otherwise it is optional... (but again, kinda cool!).

In this last part I explain how common weighting schemes are arrived at and how they work. This lesson in particular explains the equation/expression the WBPP uses- which makes the demonstration (hopefully) valuable. 

Measure and Approve frames using SubFrameSelector.

This lesson provides a detailed overview of SubFrame Selector. Ultimately an understanding of image approval and weighting provides a foundation for many other aspects of image analysis and quality control of data. 

This lesson focuses on a common issue- often encountered by CMOS camera users. A demonstration of the problem and its solution is shown. In addition, the method of fine tuning flats is also shown. 

This lesson focuses on a common issue- often encountered by CMOS camera users. A demonstration of the problem and its solution is shown. In addition, the method of fine tuning flats is also shown. 

It is possible to have StarAlignment "succeed" in the alignment process with OSC/DSLR images- and yet the images will not be aligned! See the answer to the mystery and learn why in this lesson.