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

Can't get a star image


hughejars
 Share

Question

BYE, V.3.1.18, Canon EOS 100D

I set up my trial version and used Venus as a test, nice and bright. Focused in great.

Waited til later in the evening and tried to Find some stars, I started with Vega brightest I could find. No matter how well lined up I was, or what ever settings I put camera to , I just could not get focus on any star. I tried using the FWHM, HFD etc, every ISO setting, every shutter speed, nothing but black skies.

Any hints or tips would be greatly appreciated.

Link to comment
Share on other sites

  • Answers 6
  • Created
  • Last Reply

Top Posters For This Question

Popular Days

Top Posters For This Question

6 answers to this question

Recommended Posts

  • 0

Use Maximum Sensitivity or manually set the exposure to 2 seconds and the ISO to maximum for LiveView focusing.

Even Vega will be tiny and barely visible because the LiveView exposure duration is only a few milliseconds long.

As an aside, when you set the exposure to 2 seconds, this does not mean that the camera is taking a 2 second image. The camera uses the selected exposure duration to determine how much to artificially brighten the image data.

If you are still unable to see the star in LiveView, then take a true 2 second Snap image. This should show you where to look in the LiveView image to find the star.

Link to comment
Share on other sites

  • 0

Start by Focusing on the Moon or Venus, then lock the Focus (flip switch on Lens to Manual).

Now, aim at Vega or any Star or Cluster...  If Camera is allowed to attempt AutoFocus on a "Normal Star" then it will lose it...  The Camera Lens AutoFocus Routine is designed for Daytime Brightness and Contrast Levels.

Link to comment
Share on other sites

  • 0

It is really not that difficult once you realize that what you are looking for is small and dim. It is easy to overlook. I have also found the "bright" star hiding behind the line of the border of the zoom box.

If you nudge the mount, with a hand controller, the star moving across the field of view will be easier to find.

But, yes you should only try to focus with LiveView on one of the brightest (top 20) stars in the sky.

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