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Jim Rand

Quick question from a noob regarding a lens

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Hi all,

Attempting to set myself up with some astro imaging pics on a budget!

I have a second hand astro adapted Canon 100, and a star adventurer, and I'm looking to have a crack at some DSOs, galaxies etc.

Any thoughts on the "Tamron AF 70-300mm f/4-5.6 Di LD Macro, Canon EF Fit"


Any other suggestions from this site would be good, as I don't really want to spend more than £100.

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When checking a lens, I usually search for "astrobin tamron 70-300" in a search engine. There's often a dedicated page on Astrobin listing pictures made with this lens. Since astrophotography is quite a niche thing, it's not always easy to find astro-related information... but luckily Google & co are indexing the relevant pages!

Here's the page! :) Judging by the pictures, it looks like a decent lens, with a bit of chromatic aberration and coma. You might need to stop it down a bit for better results.

Edited by Space Oddities
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Personally I'd save a bit and aim for something of better quality and with a wider aperture. I'm not going to recommend anything specifically under £100 but you may be-able to source them cheap if you really look around and don't mind going with lenses not in great condition. IO'd aim for reasonably wide aperture and good coma control to avoid distorted stars in corners and stopping down too much. 

If you're new to tracked exposures I'd also start at wider end as will be easier to get good results. Something like this would be a lovely starter lens and fantastic for general photography too.

Good alternatives:

Something like the Samyang 135 f/2 would also be great. All these are full frame lenses so you'd be using best part of the lens which should give good corners.

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