Search found 6 matches

by frank26080115
Mon Aug 03, 2020 4:31 am
Forum: Project Discussion
Topic: OpenMV as Autoguider for astrophotography?
Replies: 11
Views: 142

Re: OpenMV as Autoguider for astrophotography?

I envisioned that the WiFi shield provide a preview of the image to a smartphone. It's gotta be full resolution for the exposure check. The actual plate solving bit can be just SVGs. I am wondering if there are performance penalties. I am considering using a ESP8266 as a co-processor just to be the ...
by frank26080115
Thu Jul 30, 2020 5:05 am
Forum: Project Discussion
Topic: OpenMV as Autoguider for astrophotography?
Replies: 11
Views: 142

Re: OpenMV as Autoguider for astrophotography?

Do you guys have any specs on the optical errors of the lens and the soldering planarity of the sensor? I need he view to be perfectly parallel with the scope holder, or find a way to calibrate away that error. So I want to know how straight the lens is and how level the soldering is on the sensor. ...
by frank26080115
Wed Jul 29, 2020 3:35 pm
Forum: Project Discussion
Topic: OpenMV as Autoguider for astrophotography?
Replies: 11
Views: 142

Re: OpenMV as Autoguider for astrophotography?

I guess I'll find out how slow when it gets here My plan is to sort the blobs by brightness. It looks like I can get a list of blobs easily. My next questions: Is there a limit on the number of blobs detected? There could be... ahem... a lot of stars. If a blob’s bounding box area is less than area_...
by frank26080115
Wed Jul 29, 2020 5:55 am
Forum: Project Discussion
Topic: OpenMV as Autoguider for astrophotography?
Replies: 11
Views: 142

Re: OpenMV as Autoguider for astrophotography?

hey I just read about The OpenMV Cam has two memory areas for images. The classical stack/heap area used for normal MicroPython processing can store small images within it’s heap. However, the MicroPython heap is only about ~100 KB which is not enough to store larger images. So, your OpenMV Cam has ...
by frank26080115
Tue Jul 28, 2020 4:57 pm
Forum: Project Discussion
Topic: OpenMV as Autoguider for astrophotography?
Replies: 11
Views: 142

Re: OpenMV as Autoguider for astrophotography?

Hi thanks for the info so far. I ordered the plus version just now. Calculations tells me that it'll be a pretty crappy guider, 11.6 arc sec per pixel. I might end up turning this into a polar alignment camera instead. Gonna need to write a fake plate solver. Testing is going to be a pain lol a few ...
by frank26080115
Tue Jul 28, 2020 3:21 am
Forum: Project Discussion
Topic: OpenMV as Autoguider for astrophotography?
Replies: 11
Views: 142

OpenMV as Autoguider for astrophotography?

You guys seem to be the perfect hardware for a headless astrophotography autoguider Background: the Earth spins, so the stars in the sky are always moving. If you want to take a photo of something really dark and far away in the night sky, you need to do long-exposure photos but since the stars are ...

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