Thanks for this video. It never occurred to me to take an image and then check the histogram value in the main screen as a starting value. My 3 nm filters (especially Ha) gobble up most of the panels available light and this helps me get an idea of what to use.
Thanks a lot for that great video!! May I ask why did you make the flats all at the same gain?? Usually HSO is capcured at higher gains than LRGB. So wouldnt you adjust that higher gain also when doing flats? And also I wonder why you dont go
I use the same gain for all my filters, so that I can use the same bias and dark frames. Otherwise, it becomes quite complex to deal with many bias and dark frames… HTH
hi, i have successfully followed your ascom driver for the telescope cover and it works well, i also saw that you made an ascom driver for the flat panel, do you think it is possible to join the two things together and i.e. on a single Arduino install both drivers? ciao Roberto
Hi Julien, First thanks a lot for your project ! I tested the flat panel circuit on breadboard today and I have suggestion about it's design. Main difference with your's is that I'm using a different NPN Mosfet : FQP30N06L (this may explain why I did not get espected behaviour ?) and no power regulator. So what I changed are about the mosfet, the resistor is now between xiao port 8 and mosfet gain, source is directly connected to gnd and drain is connected to led minus - I have modified fritzing schema. Let me know what you think of that and if you want to get the fritzing.
@@darkskygeek Well, no. if you have a look at the FQP mosfet datasheet you will notice that a resistor can be used as a filter to avoid unwanted current on the gate. In fact, I don't understand why the drain is connected to the gnd through a resistor. Please have a look at the schema drive.google.com/file/d/1-T3iVtFbHdwypgSZ0MG04hCofBHDzFE8/view?usp=sharing
@@franckmalterre6087 OK, I get what you’re saying now. I went back and looked at my schematics in the README of my GitHub repo, and I realized that there is a small mistake. The photo of the circuit at github.com/jlecomte/ascom-flat-panel#electronic-circuit shows the correct wiring. The GATE (not drain) is connected to the ground through a resistor, which is a best practice when wiring a MOSFET. See www.build-electronic-circuits.com/mosfet-gate-resistor/ for more info. I’ll fix the schematics later today. Thanks for letting me know!!! 👍🏻
![Improve Your Technique By Mastering Filter Offsets [Tutorial]](http://i.ytimg.com/vi/xy-Nf5eyGEU/mqdefault.jpg)
Thanks for this video. It never occurred to me to take an image and then check the histogram value in the main screen as a starting value. My 3 nm filters (especially Ha) gobble up most of the panels available light and this helps me get an idea of what to use.
Excellent video, thank you :)
Thanks a lot for that great video!! May I ask why did you make the flats all at the same gain?? Usually HSO is capcured at higher gains than LRGB. So wouldnt you adjust that higher gain also when doing flats?
And also I wonder why you dont go
I use the same gain for all my filters, so that I can use the same bias and dark frames. Otherwise, it becomes quite complex to deal with many bias and dark frames… HTH
hi, i have successfully followed your ascom driver for the telescope cover and it works well, i also saw that you made an ascom driver for the flat panel, do you think it is possible to join the two things together and i.e. on a single Arduino install both drivers?
ciao
Roberto
Nothing is impossible 😉
@@darkskygeek I take this message of yours as a challenge for me? Be careful I do it 🤣🤣🤣
Hi Julien,
First thanks a lot for your project !
I tested the flat panel circuit on breadboard today and I have suggestion about it's design. Main difference with your's is that I'm using a different NPN Mosfet : FQP30N06L (this may explain why I did not get espected behaviour ?) and no power regulator.
So what I changed are about the mosfet, the resistor is now between xiao port 8 and mosfet gain, source is directly connected to gnd and drain is connected to led minus - I have modified fritzing schema. Let me know what you think of that and if you want to get the fritzing.
Hi Franck! I don’t understand what makes your design better. Can you explain? Is it just the economy of a buck converter?
@@darkskygeek Well, no. if you have a look at the FQP mosfet datasheet you will notice that a resistor can be used as a filter to avoid unwanted current on the gate. In fact, I don't understand why the drain is connected to the gnd through a resistor. Please have a look at the schema drive.google.com/file/d/1-T3iVtFbHdwypgSZ0MG04hCofBHDzFE8/view?usp=sharing
@@franckmalterre6087 OK, I get what you’re saying now. I went back and looked at my schematics in the README of my GitHub repo, and I realized that there is a small mistake. The photo of the circuit at github.com/jlecomte/ascom-flat-panel#electronic-circuit shows the correct wiring. The GATE (not drain) is connected to the ground through a resistor, which is a best practice when wiring a MOSFET. See www.build-electronic-circuits.com/mosfet-gate-resistor/ for more info. I’ll fix the schematics later today. Thanks for letting me know!!! 👍🏻
Is the rotator on your AT130 stock? It looks different than mine.
It’s not. My rotator is a William Optics manual rotator, which has male M63 threads. Highly recommended, albeit a little expensive.