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hey guys! quick question! i recenty bought the OCAL collimator for my newtonian. I am not an expert at collimation and i'm still figuring things out. Through the OCAL collimation looks decent and through a collimation cap pretty much the same! However when i take flats it looks like it has uneven vignetting. Does the vignetting necessarily mean collimation is off? (The darker side in the flat frame is the front of the scope)   |
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No
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andrea tasselli: I appreciate your reply but can you be a little bit more helpful than just a simple “no”? “No” means that i was right, uneven vignette does not mean bad collimation? |
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Yes, no means exactly that.
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Menelaos, I see the same thing in my flats. I've checked collimation and it's spot on. There are a lot of things that can effect flat frames other than fall off so as long as your calibrated lights look good I wouldn't worry about it. I think a lot of times, looking at your flats frames is a mistake it can cause a lot of trips down the rabbit hole for no reason!
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