I am kind of pleased…. Increased the pictures taken - or decreased the frequency - and I finally captured some stars moving across the screen (towards the end).
I do have to replace the camera - so many dead pixels - don't notice in daytime, but is giving me the irits at night... Cant see any dust on the camera or UV glass - all looks clean, but the color red etc on the pixels - I think might mean there is some dead pixels floating around on my camera
Interesting. Very interesting. You can perform a filter to filter out the dead pixels (since they do not move), Funny how none of us notice the dead pixels. I assume you are using the SkyCamera? Be very interesting to see the regular much more expensive PiCamera. Software compatible BTW.
Your just jealous that you cant get 4 seasons in one day... This morning brilliant sunshine for an hour - was getting quite warm.. then the clouds moved in and I had to turn the heater on... It drizzled a little... and tonight we get a nice sunset with no clouds...
Much more interesting than a boring day of nothing but the same.... lol
Anyway this hardware will move to central Victoria in 2 weeks now that I am satisfied it runs well - once it gets over that great dividing range, it will be a different story!
Waiting for the darkness to fully arrive - swapped my camera out for another to see if I get better night time images tonight!
So I swapped out my SkyWeather camera for a PI v2.1 NOIR Camera... Left all my code the same - so once its dark it takes a 6 second exposure just like before...
I got to see only a couple of pictures before dusk - they looked sharper... good color… I was having a redish tinge bleed on the left with the SkyWeather camera - now with the Raspberry PI official camera - its gone...
All good - I can see no sign of dead pixels with the v2.1 camera - so I am thinking it was just simply a quality issue - got a bad camera with the kit...
HOWEVER - a 6 second exposure on this camera - turns night into daylight... After sunset tonight - I could still see a blue sky and clouds... It was definitely dark out there - but the picture was as if it was taken in broad daylight! I checked everything…. even moved the camera to be sure - and the picture changed.
Now that its all overcast and cloudy (yes topher its Melbourne!) my picture is all washed out - no blue sky at all... Everything is completely white !!! I deliberately have it showing a neighbours roof - and the red tiles are showing red....
I guess the NOIR is really working.... Its a completely different camera setup now ! Might be sharper, might have better colors - but I have lost my night shots now - as night has turned into daylight!!!!
Will leave it along tonight, so you can see it in tomorrows video (the top left will show Night Vision and the time will be after 18:30pm to prove its actually night time) - I am amazed at the difference.... Must be all the light pollution of the suburbs reflecting off the clouds that has never been visible before!!!
I pinched this camera off my new project of building a meteor (ufo ?) detector - and did research and found the suggestions of using the NOIR camera for night time shots - but not so sure now I have seen the results!
Tomorrow night I will experiment - it might not need to do a long exposure at all - I might be taking 2 photos... a long exposure to check for cloud coverage and a short exposure to show stars ?
Last Edit: Sept 27, 2019 1:34:02 GMT -8 by impactoz
It got the better of me.... I hated the redish brown - so modified it to at least turn it into black / white - which is what I would like to see for night shots.... looking better at least... And I am starting to see a couple of stars as the clouds move on (Yes topher - Melbourne is moving to another season tonight - LOL)
Added the code to turn the image to black and white in taking a night shot... (In case any of you guys want to upgrade the camera...) cmd = "raspistill -q 100 -t 1 -ss 5000000 -vf -hf -sh 0 -co 50 -br 50 -sa 0 -ev +2 -w 1920 -h 1080 -ex night -awb auto -ISO 800 -mm average -n -o static/skycamera.jpg" subprocess.call(cmd, shell=True)
#Add the following lines if your using a NOIR camera - turn the image to BW as its too colorful! color_image = Image.open("static/skycamera.jpg") bw = color_image.convert('L') bw.save("static/skycamera.jpg")
Post by topher2880 on Sept 27, 2019 5:26:16 GMT -8
I am using the cheapo v1.3 and getting really dark sky. This could be because of no light pollution, or maybe the quality of the camera.
Im loving the look of your night shots and looking forward to seeing the video from tonight at lunchtime tomorrow, depending on whether GWS are getting flogged or not in some sort of sporting event there tomorrow.
I will look forward to playing around and seeing what I can get
My camera is on a pole about 15 feet above the roofline pointed almost due south. It is mounted straight/flat instead of angled up slightly so we get a great view of the trees and house across the street....
Wow, you guys have made a lot of progress. Could one of you post the final code for this feature and I'll figure out how to add it into the official code space during Bugweek October 2019.
My sat.mp4 has some interesting footage... 7 Seconds in - transition from day to night... Need to do a little more work / thinking of - but to see the cloud coverage change is interesting... The NOIR v2.1 Camera really picks up low light...
Mostly cloud coverage all night - but at 8 to 9 seconds in, enough of a clearing to see some stars... I think it might be orion you see move across the screen... (01:50 to 02:36). I cant wait to see this at my true location with no light pollution to show the milky way...
I am surprised I have never caught an aircraft in day or night time shots I have seen - as it is pointing straight across the East-West runway of Melbourne....
13- 14 Secs in.... The transition from night to Day - I still think is over exposed... Again that pesky good NOIR... I might need to change my timing over using different values of dusk, sunrise, etc... But I need to wait really for clearer weather to see what is happening...
Anyway - here is the current code I am using - always experimental.... My complete SkyCamera.py for ya! Have fun!
from PIL import ImageFont, ImageDraw, Image
import datetime as dt
import astral # Need to install this via sudo pip install astral
OK, I'm all over the camera change to get the improved night time imaging but I have a question?
I would have thought that going the NOIR camera route would cause the colors in the daytime imaging to go all wonky due to the lack of IR filtering. Am I missing something here or did you compensate for that in some fashion?
Last Edit: Sept 30, 2019 8:01:57 GMT -8 by jrwilling