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Cannon EOS 550D

PostPosted: Tue Oct 23, 2018 1:51 pm
by Graeme1858
Has anyone used a Cannon EOS 550D for astro photography?

I found one at a reasonable price and wondered if anyone on here has had experience of using one.

Regards

Graeme

Re: Cannon EOS 550D

PostPosted: Tue Oct 23, 2018 5:31 pm
by Gfamily2
Graeme1858 wrote:Has anyone used a Cannon EOS 550D for astro photography?

I found one at a reasonable price and wondered if anyone on here has had experience of using one.

Regards

Graeme

I haven't, but if you look on Astrobin, I think you can filter by camera type.

If it's well priced, I think everything above the 350D has Live View, and that's the basic minimum (as much as there's any minimum).
It can also be worth checking what Canon models are supported by APT software.

Re: Cannon EOS 550D

PostPosted: Wed Oct 24, 2018 6:59 am
by Graeme1858
Thanks for that.

It has a live view function, It has it's own Wikipedia page! I wondered if it was a good Cannon model for connecting to a pc. I have a Sony Alpha A350 and it has an excellent sensor for it's age but it will only connect to a pc to download stored images, it can't output to the pc screen. And I don't want to mod it because I use it for day time photography.

Cannon has the EOS Backyard software and I've seen SharpCap recommended in videos. I'll look into the APT software and I'll go and have a look on Astrobin.

Re: Cannon EOS 550D

PostPosted: Fri Oct 26, 2018 11:45 am
by Aratus
Graeme1858 wrote:Has anyone used a Cannon EOS 550D for astro photography?

I found one at a reasonable price and wondered if anyone on here has had experience of using one.

Regards

Graeme


I have, and it works just fine, especially with the 'EOS 'Backyard' software. As always with these cameras, it contains internal filters which can reduce nebula light levels. Having said that, it isn't as bad as some people make out. You need at attachment to give a 1 1/4" or 2" 'nose' to put it in place of the eyepiece. It is advisable to get a power adaptor, as astronomical use of the camera soon depletes the battery.

Re: Cannon EOS 550D

PostPosted: Fri Oct 26, 2018 12:53 pm
by Graeme1858
Cheers for that Aratus.

I've read a bit about doing the mod on a DSLR to allow more of the red end of the spectrum through so I was planning on having it done. But then deep sky imaging light pollution can be reduced using an IR cut Neodymium filter. Why is this not a contradiction?

Re: Cannon EOS 550D

PostPosted: Fri Oct 26, 2018 1:20 pm
by Gfamily2
Graeme1858 wrote:Cheers for that Aratus.

I've read a bit about doing the mod on a DSLR to allow more of the red end of the spectrum through so I was planning on having it done. But then deep sky imaging light pollution can be reduced using an IR cut Neodymium filter. Why is this not a contradiction?

The IR filter that is removed in Astro-modding normally blocks the Ha Line at about 656nm wavelength, which some astro photographers are keen to include in their images.

The Neodymium filters are selective, so they significantly cut the transmission of light around the 550-600nm waveband (which includes the orange glow from Sodium street lights), but still allow transmission of the Ha band.

This information sheet shows the transmission characteristics
https://baader-planetarium.uk.com/en/pd ... E_1007.pdf

here
Neodymiun IR.png
Neodymiun IR.png (324.69 KiB) Viewed 1357 times

Re: Cannon EOS 550D

PostPosted: Sat Oct 27, 2018 6:18 am
by Graeme1858
Gfamily2 wrote:The IR filter that is removed in Astro-modding normally blocks the Ha Line at about 656nm wavelength, which some astro photographers are keen to include in their images.

The Neodymium filters are selective, so they significantly cut the transmission of light around the 550-600nm waveband (which includes the orange glow from Sodium street lights), but still allow transmission of the Ha band.


A very useful coincidence for astronomers that neodymium has both these specific selective filtering properties!

Thanks for the explanation.

Regards

Graeme

Re: Cannon EOS 550D

PostPosted: Thu Nov 01, 2018 9:16 pm
by Graeme1858
Well the 550D had gone so I got a 600D which is a later model and the same spec except, strangely, the iso only goes to 64000 when the 550D goes up to 128000! It's not been on the telescope yet but I've had it connected to Backyard EOS to have a play.