Howdy, Stranger!
It looks like you're new here. If you want to get involved, click one of these buttons!
BlockHead
About
- Username
- BlockHead
- Joined
- Visits
- 257
- Last Active
- Roles
- Member, Administrator
Comments
-
Hi Reggie, First question...did you happen to employ Drizzle? (I ask concerning the black spots.)Saturated stars, depending on the sensor, can unfortunately look weird when processed. There are some techniques of adjusting them (but I haven't been t…
-
I believe in essence I already made this exact suggestions (including putting it in the darks panel). But I went a step further. This checkbox represents inaction for the most part. Generally when checking something you are doing it because it is op…
-
Here is the thing..yes you are correct (which is why I said out loud what I should have maybe kept to myself). But there is more.Juan explains apparently there are situations (remote observing services) that supply calibrated darks. That is the stra…
-
What I just wrote on the forum is: "WBPP normally subtracts the bias from master dark frames when optimizing darks. If you are providing darks that already have the bias removed WBPP needs to know this so that it does not do an unneeded subtraction.…
-
That is what the Checkbox means. Please go back to your statement here: "If I were to load such a master into WBPP (along with a master flat dark, master flat, and lights) how would I set the "Calibrate master darks" checkbox? It seems to me that u…
-
Hi again Sam: Here is what I wrong on the PI Forum... I am waiting for some responses: Hi,This crazy box is an endless source of confusion for a vast majority of PI (WBPP script) users:1. Most people do not know what WBPP is doing. WBPP is going to …
-
All darks are prepared by simple integration. You have to purposefully do something weird and pre-calibrate your dark otherwise. I really wish this checkbox was not there! You keep it checked. For CMOS, they have variable biases... so instead of ca…
-
Ah. I see.Once again I still agree with me.. In THIS example I am processing CMOS data and there isn't a master bias. Thus calibrating master darks is completely off the table (it doesn't really matter). Calibrating master darks (what WBPP normally …
-
Hi Sam, Wait wait wait! I am talking about the "Calibrate Flat Darks" check box. NOT the "Calibrate master darks." I think you are referring to what I say at 8:56. I am correct (*laugh*) that it would not matter in this case if I checked it or not b…
-
Yeah... sorry, I don't think that is going to work. You have symmetry breaking there. :)I fear you really will need to attack with lots of samples. I suspect the original problem is that your flat field image isn't matching up with the image illumi…
-
Please do look at the new lesson I uploaded on WBPP (part 8)...I hope that is helpful...please let me know!-the Blockhead
-
Yes.Just don't touch that g#$%#! check box. It sure confuses people. Your master dark has the bias. So WBPP will calibrate the master dark on the fly when it needs to .-the Blockhead
-
HI Khushrow, Without looking at the data, I couldn't say if there is a particular reason. CMOS cameras have very little dark current. It is likely that the math for scaling the dark ends up with very small values which will mess up the calibration. …
-
Hi Jeroen, Have you had a chance to watch the PixelMath lessons yet? They are a part of Fundamentals.The Ha blending is shown in the Horizons set of content. I do not consider this "Fundamental"... but instead it goes to next step since it is more c…
-
Geez...the entire reason I made that stupid formula was because I could not find a conditional statement in the Math methods. I don't know Javascript... so apparently you found the answer. That would have simplified my expression..but also would hav…
-
Hi Martin, Yeah...the NB stuff is coming... I think once I conclude this WBPP thing..it maybe my next area to attack.The problem is..I will not have years of experience working with NB... but I can certainly give my take, given the tools and techniq…
-
Hi Edward, As I said in the video... I really haven't been deep diving into using SFS consistently. That being said... everyone has opinions and I am no exception! First regarding the formula, yes, if you wanted to incorporate my scheme to address t…
-
Well... if you *really* want to be in control... you will like my final SFS section. I will be uploading momentarily and announcing. -The Blockhead
-
Indeed, if you have matching dark frames it is best NOT to optimize. It can get things wrong in terms of noise evaluations- because it is the noise evaluation that determines the scaling factors!! So turn off optimize and no scaling factor errors to…
-
Hi Richard, I am working towards making WBPP right now. It is somewhat complex to cover so many different permutations- so I need to make a clear lesson on this. In addition is it necessary to first do the lesson on SFS- since WBPP uses the informat…