Thank you. I have one EAF, and it's currently mounted on my Newtonian telescope, so I didn't remove it. I focused manually using a Bahtinov mask, and basically, I didn't touch the focus all night. Otherwise, everything needed is there—both the bracket and the strap. When I was shooting with a monochrome camera, autofocus was indispensable.
A feeling of inadequacy when I see the Bayer matrix on an image) (just kidding). I'm very used to monochrome. For conveniences, perhaps it's just that you need to shoot fewer flats. Otherwise, it's actually a decent camera; there's a slight tilt that needs to be addressed.
Well, for practice and understanding the capabilities of different equipment, this is just the thing. Especially when there's no good weather for months.
Hello, can you tell me if the blue tint on stars is chromatic aberration? I've heard that Samyang lenses are supposed to be free of C.A., or does it depend on the specific copy? Or could it be defocus, as someone recently suggested to me? I'm just starting to shoot with this lens and an unmodified DSLR, and there are a lot of little blue stars. I'm wondering if I should even pay attention to this or not. Otherwise, I'd need to get all sorts of adapters for the lens—like an EFA guide and such—or sell it and get a small ED lens instead.
Hello, I was also unpleasantly surprised by the blue halos. I focused manually, and it's possible the focus drifted slightly overnight. I also suspect the UV/IR cut filter from Svbony. I captured the same region with a modified DSLR, and there didn't seem to be issues with blue stars there. The optics on my Samyang lens are certainly not perfect either.
Understood, I'll test it in different setups, and hopefully with an electronic focuser. I'll try a setup with the ASI 662 MC guide camera—it's the only one available to me for now. I also have two DSLRs, one modified and one standard, but I don't have much confidence in either. Both were dropped pretty hard, and who knows how that affects the sensor.
29 Mar, 2026
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