Got a good chunk of data last night, plus some contribution from two earlier nights this summer. Equipment: Ceravolo 300 Astrograph, SBIG STC-7, Astrophysics 1600 mount. Exposure: RGB+Ha, two hours each per plane. Processed in MaxIm DL (of course!).
Here's an image of M33 from a different angle, ie. 7° more southernly. First attempt mixing h-alpha with RGB. Same camera and similar optic.
Correct. More images are needed and median would have removed the artifact. I was trying out a 22mm Nikon F lenses mounted in the STC7 and it was amazing how often something streaked the FoV. Here's an example.
If you work out how many pixels it crossed, resolution in arcseconds/pixel, and exposure length, you'd have some idea of how fast each was traveling, then you'd know if a satellite or meteor.
I think Doug has it right though you can see it heating up, burning off then fading out. A satellite is usually a line with possible regular periodic variations in brightness.
The bright one does look like a meteor. Image: 5 second exposure; binned 2x2; 20mm lens (44.44 arc-sec/pixel). The 'meteor' coordinates are (475,634) (603,556), traversing 149.8 pixels in 5 secs. The object moved 44.42 degrees/sec. With distance to object one could calculate the speed? An all sky camera based on the IMX428 and a panomorphic lens and software to remove lens distortion would be an interesting product.
That's no satellite... (and it's not a Death Star either)... eg polar orbiting satellites do 1 orbit in 90 minutes; = 4 degrees per minute. Way too fast, so it's a meteor. And many burn up around 100km up, so you could assume that for the altitude...
Yeah I've taken pictures of meteors before - that's the classic profile. Also they often change color, which is cool.
