Friday, May 11, 2018

Tonight let's try webcam astronomy!

So I've been hearing about stacking photos and expensive CCD / CMOS sensors for some time now. And I've also been hearing about using some trashy old webcams to achieve some pretty decent results. I don't have one of those expensive sensors... ("yet" *cue music*) but I do have a really, really old webcam. Like 240x480 resolution kind of old.

for ~$15 USD off Amazon I can grab an attachment for it to mate it to a eyepiece tube. So, I did. The end result looks like this:

Ignore the DnD map for the moment. But that's a circa 1999 Logitech webcam. Anyway, using the supplied drivers and etc. I was able to capture some video of Jupiter and using a random off-the shelf stacking program I was able to come up with the following image:


This is hardly observatory quality - but you might be able to just make out the Great Red Spot at upper right. It's very washed out. The dark storm under it (the picture is upside down) is more obvious.
The interesting thing is that this is pretty much what you would see tonight looking through the eyepiece. Maybe a little more detail in the eyepiece, maybe a little less. And just to show that, I've got an accompanying sketch to go with the photographs.

Regardless, I think I'm hooked. I may have to get me one of those fancy sensors now... :D

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