Hello. Your California Nebula should have fit completely at a focal length of 264mm, I think. Mine fit at 360mm. The 533 is indeed a bit smaller than the 294, but probably not by that much.
And tell me, how is the camera? I'm thinking of getting the 2600, but I'm also considering the 294mm, which is simply cheaper. I've heard about the issues with the 294.
There's no better camera in terms of value for money. If the 2600 is considered top-tier, then the 294 is near-top. And calibration frames solve most issues. It does still show banding at short exposures, of course. For example, if you shoot M13 with a 200mm Newtonian at, say, 10-second exposures, there will be banding. But you could capture stars at 10 seconds and, say, the background at 60 seconds. Blend them together and voilà! But that's just my theory. I have an unprocessed M13 sitting here. Maybe I'll find an easier way.
1 Sep, 2025
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