Welcoem to posts!!
in the future - u will be able to do some more stuff here,,,!! like pat catgirl- i mean um yeah... for now u can only see others's posts :c
In my latest video, I made some predictions about how my old CCD camera would do with respect to SNR compared to my 294MM. The prediction took into account pixel size. I was blown away by how much my simple experiment matched the theory! (https://www.youtube.com/watch?v=sEpPQ...)
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In about 12 hours, my latest video will go public. What thumbnail idea do you prefer?
The title will be something like: "My old CCD wins the SNR battle again. What's going on?" The top 3 will be used in YTs test and compare. I may modify these ideas before they go out.
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Background music or no background music?
3 - 2
Sometime in the next few days, I'll be posting an update on the Starlight CCD vs. ZWO CMOS debate. If you're a member on buymeacoffee, then you can see a preview of an experiment I've been doing as a follow up! buymeacoffee.com/deepskydetail/does-pixel-size-mat…
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What is most important to you for new astro-cameras?
8 - 2
Sometime when I was asleep* the channel passed 4000 subscribers! Thank you everyone for your support!! I really appreciate it!
*I know, a luxury for astrophotographers, although I won't be able to image for a while due to my arm :(
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I just had a great comment on my latest video concerning moon phase, light pollution, read noise and sub-exposure time. The comment (correctly!) points out that an SNR comparison between the two images loses meaning without knowing these variables. A few of these I didn't mention in the video, but I do have the data for. I thought I'd put that information here, and why a lot of those variables would actually tilt the scales in my viewer's image's favor if they did affect the results.
1) Exact light pollution is an unknown for the comparison, but the Ha filters should get rid of most of this effect. The viewer's Ha filter is better than mine. If anything this should increase SNR for the viewer's image. Additionally, the SNR calculator app tries to measure light pollution and subtract that out of the calculation.
2) Moon phases: mine was taken on October 10, 2019, 90% illumination. The viewer's was taken around July 4, 2024, almost a new moon (2.88% illumination). Another advantage for the viewer's image (although the moon was not out during my image, so this should not have an effect either way).
3) 8:31 of the video I put in that both subs were 300 seconds.
4) The SNR calculator takes into account read noise.
Bonus!
5) Both images were taken within an hour of transit.
The fact that the CCD's SNR measurement is about 1.7 times more than the CMOS's, and the CCD's pixels are about 1.7 times bigger (the theoretically correct number) is either a really weird coincidence, or pixel size is a really good explanation for the increase we observe! :)
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I make videos about astrophotography, mostly. Sometimes I make tools people can use to help make their astro photos better.