Quote:
Originally Posted by Mqrko
Hi,
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We can use a focal reducer which makes it faster, right ? So where is the problem ?
I don't want to crop my pictures. A little bit is okay but I won't crop 50% of the picture for example.
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Cheers,
Mqrko.
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Hi Marko,
You ask many questions but I shall only answer a couple, but ask another in return.
Cropping pictures is inevitable, the DSOs aren't all the same size and your focal length is fixed. Also you need to do some research on oversampling, essentially you need to match the pixel size to focal length, or vice-versa. After many years and many scopes, I have settled for a fast Newtonian scope. Faster is better, believe me. Even though there is a thing called the f-ratio myth, practical experience says faster scope = better data, but conversely smaller images. Guiding at long focal lengths on anything but a premium mount can cause much frustration, it has made many a budding astrophotographer give up.
My question to you is how much are you prepared to spend?
Buy the best mount you can afford, I have a Paramount MX, but have had a G11. The G11 was good, the PMX is better. Paramount have a smaller mount, but I don't know how good it is. Don't be scared to buy secondhand, especially from here.
Cheers
Stuart