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

Unable to set LiveviewAutoFocusMode, current setting is assumed


astronut892010
 Share

Question

6 answers to this question

Recommended Posts

  • 0
8 hours ago, astronut892010 said:

Still getting the error though and don't know why.

I've answered this in my post above.  It's a non issue.  You don't have a lens so the setting can't be set... hence the message.  Again, it's a non issue, just ignore it.

Link to comment
Share on other sites

  • 0

Oh, so LiveView is working but you are not seeing any stars?

If so, this is not unusual. LiveView image frames are short exposures that are only a few milliseconds in duration. Because of this you need to crank up the brightness adjustment that the camera applies to each frame. You do this by doing the following:

1) enable exposure simulation in the camera's menus. This allows BYE to control the brightness by changing the ISO and exposure. This may be automatic for your camera.
2) In BYE, set the exposure to 2" (not BULB with a duration of 2 seconds, but a Tv value of 2")
3) In BYE, set the ISO to maximum

Instead of doing 2) and 3) above you can also select the Maximum Sensitivity setting in the LiveView area of BYE's Settings dialog.

This should brighten the LiveView display so that very bright stars like Vega and Capella are visible, as long as the telescope is close to focus. If the scope is not close to focus (say the drawtube is all the way in) then even a bright star may not be visible in LiveView. This is typically because as the star becomes mis-focused, it becomes larger and dimmer. It may become so large that it covers the entire field of view and effectively disappears. In this case you will need to use some arrangement (eyepiece and adaptors) that is parfocal with the camera to allow you to get close to focus before using BYE, or look through the viewfinder while focusing, before connecting the camera to the PC and BYE.

Even if you do all of the above correctly, only the very brightest stars will be visible as small, dim dots in LiveView. If you are still unable to see any stars in LiveView. then you could try the LiveView Enhancement Tools that are available in BYE. These are described in the BYE User Guide. If you are still unable to see any stars, then the final alternative method is to take short Snap exposures from the Frame & Focus screen. Even a 2 second Snap exposure will have 100 times more exposure than a single LiveView frame. You can then select a star from the snap image to see its FWHM or HFD and begin a trial-and-error process of adjusting focus and taking another image until you get to the minimum star diameter. This may seem inconvenient but it is what users of cameras without LiveView must do to get focused. With practice it should only take a few minutes to accomplish.

Link to comment
Share on other sites

  • 0

Great input Rick, very thorough.  Many are steps I did even before posting, but always helpful for the reminders.  Thank you both for the excellent advice.  Tonight it is behaving much better.  Didn't do anything different.  I will keep you posted.  Still getting the error though and don't know why.

Using BYE 3.1.16 on Windows.  Canon 80D camera.  Running maximum sensitivity for LiveView in the advance settings.

It was just really weird last night and I don't know why.

Cheers,

Jay

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