Jump to content

Canada's top-tier Telescopes & Accessories
Be as specific as possible when reporting issues and *ALWAYS* include the full version number of the application you are using and your exact *CAMERA MODEL*
NEVER POST YOUR KEY IN ANY PUBLIC FORUM, INCLUDING THE O'TELESCOPE SUPPORT FORUM ::: IF YOU DO YOUR KEY WILL BE DEACTIVATED WITHOUT NOTICE!
  • 0

Temperature question


Tbar23
 Share

Question

Last night I was taking photos with my Canon EOS RP and Backyard EOS.

The first set of photos showed a temperature that settled out around 12C during an ~75 min session (ambient temp of ~5C).

I was watching a movie when the session ended, so it took me about 20 minutes before I got outside, put the telescope lens cap on and then started a series of Darks.

What I find odd is that the first Dark photos are up at 21C and drop down to 13C over the next ~20 minutes.

What would cause the temp to go up nearly 9C with no imaging session going on?

Link to comment
Share on other sites

  • Answers 6
  • Created
  • Last Reply

Top Posters For This Question

Top Posters For This Question

6 answers to this question

Recommended Posts

  • 0

That would be a question for Canon.  Even the camera is not taking pictures, there is still some electronics generating some heat if the camera is still on. This said, no one really knows (I don't at least) know where those temp sensors are located inside the camera and if near-by electronics affect its reading.

Link to comment
Share on other sites

  • 0

Remember that the Temperature Sensor is measuring the Internal Electronics - the combined Digic Processor(s) and Sensor Assembly.  The Sensor doesn't generate too much heat while performing a Long Exposure (Light or Dark), but does generate a good bit when Capturing Video (and LiveView).  The Digic Processors generate bursts of heat when each Image is Read from the Sensor, while Focusing, and during Video.

Link to comment
Share on other sites

  • 0
26 minutes ago, astroman133 said:

LiveView is not ever on when you are on the Imaging screen.

Hmm, so that gets me back to wondering why the temp went up so much when my imaging session completed.

During the 20 minutes between finishing my first imaging session and the start of a new session for Darks my camera should have just been sitting there in whatever state BYE leaves it in at the end of a capture sequence. LCD closed. Definitely no video and no focusing. And image download happens after each image is taken so that shouldn't have been occurring either.

I'll have to do some experiments on a cold night and see what I learn.

Link to comment
Share on other sites

  • 0
1 hour ago, Tbar23 said:

I guess the question is what mode is the camera in when BYE finishes a capture? If it defaults to LiveView, then perhaps that is why the temp went back up so quickly.

BYE does not do anything once the capture is finished, aside from download the image over USB, that is. BYE triggers a shutter the same way you would if you were pressing the shutter button physically.

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Answer this question...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

 Share


×
×
  • Create New...

Important Information

This site uses cookies to offer your a better browsing experience. You can adjust your cookie settings. By closing this banner, scrolling this page, clicking a link or continuing to browse otherwise, you agree to the use of cookies, our Privacy Policy, and our Terms of Use