faulty celestron c5? (1 Viewer)

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piero

Active member

• May 18, 2010

• #1

Hi,
I am new of the forum, so hallo everybody!

I have a question (probably just answered). I wanted to have longer lens
than my canon 400mm f/5.6 so I bought a used celestron c5.
But in the tests I made the pictures on my 500d were very soft and worse than
400mm f/5.6 + canon 1.4 + soligor 1.7x and dfficult to focus.

So I am asking if you think that with a skywatcher 80ED and barlow lens I could have better results or not?
thanks a lot for your help

Piero

 

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Paul Corfield

Well-known member

• May 18, 2010

• #2

Welcome Piero,

You could maybe try collimating the Celestron C5 and see if it improves the image quality. This link takes you to the C5 instruction manual and there's a section on collimation. http://www.celestron.com/c3/images/files/downloads/1192143824_52291c5spotterx.pdf

As for your 400mm plus 1.4X and 1.7X teleconverters you would need to post some example photos that you've taken so we can do a comparison with the 80ED. Have a look through my digiscoping gallery link at the bottom of this post to see a load of my 80ED photos taken with a Canon 450D. Most of them were with a Kenko Pro 1.4X teleconverter but there's a few barlow ones in there too.

Paul.

 

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piero

Active member

• May 18, 2010

• #3

Thank you very much! GREAT pictures I did not imagine that it was possible to take pictures of bird in flight!
I could not distinguish the pictures made with the teleconverter!
By the way is the barlow lens better than the TC?

Thanks again

I am really tempted now!

 

mooreorless

Well-known member

• May 18, 2010

• #4

Hi Piero, Welcome to Birdforum!! I don't think Paul would mind me linking his excellent thread on this same topic about barlows etc.
http://www.birdforum.net/showthread.php?t=170183

Regards,Steve

 

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Paul Corfield

Well-known member

• May 18, 2010

• #5

No probs with the link Steve.

Piero, I should think that the Canon 1.4X would show no loss in quality at all on the 80ED. The Soligor 1.7X isn't one I've tried so I can't comment on that. It should work fairly well though. 2X barlows work very well with the scope, I use a 2.3X barlow and it's very sharp.

The area where most people struggle is with manual focusing. If you have good eyesight it shouldn't be an issue.

Paul.

 

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piero

Active member

• May 18, 2010

• #6

Thank you again !!

I have a further a pair of questions.

To attach the camera to the celestron c5 I need a c5-T connector and T-ring for eos. In the case of ED80 is enough the T-ring?

I think that the focusing is not going to be an easy task. Moreover I have a good tripod but I think the head is not good enough. Which one do you suggest?
Thanks
Piero