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Issue with T5i view finder when shooting stars.

Started Aug 1, 2019 | Questions thread
Ralph McKenzie Senior Member • Posts: 2,121
Re: Issue with T5i view finder when shooting stars.

it would seem unlikely that the sensor would overheat, not to say it cant, just seems unlikely.

I feel you are using the wrong lens to start with. You really should be using a shorter focal length with wider field of view. To get sharp stars at 70 mm your exposure time is only going to be 5 or 6 seconds before star trailing is observable and you wont be able to tell if your focus is right. Of course with a tracking mount this will be better.

What method are you using for checking the stars focus? I mean by this whats your step by step process for setting up the lens focus. Might I also suggest you spend some time on Lonelyspecks website to get a better understanding of the task at hand.

https://www.lonelyspeck.com/lenses-for-milky-way-photography/

https://www.lonelyspeck.com/milky-way-exposure-calculator/

https://akiwiretrospective.com/about-astrophotography/

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http://akiwiretrospective.com/
Fuji HS20EXR,S5700
Canon 1000D, EF-S18 - 55 mm & EF 70 -300 mm

 Ralph McKenzie's gear list:Ralph McKenzie's gear list
Fujifilm FinePix HS20 EXR Canon EOS 600D Canon EF-S 18-55mm f/3.5-5.6 IS II Canon EF-S 55-250mm f/4-5.6 IS II
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