Jump to content

sgl_imaging_challenge_2021_annual.thumb.jpg.3fc34f695a81b16210333189a3162ac7.jpg

Phone digital setting circles?


cootuk
 Share

Recommended Posts

Seeing as smart phones can measure compass settings and inclination, I'm wondering whether there are push-to apps whereby the phone is attached to the tube and reads out like a digital setting circle?

Would the sensors be accurate enough?

Would they be more accurate than the manual circles?

I know compasses and inclinometers are available, but then it would be a case of converting those numbers to ra/dec or alt/az.

Link to comment
Share on other sites

I am going to try the same thing with a handheld digital compass attached to the tube. I am then going to use my ipod to adjust the tube angle.

The only problem that could happen is that these electronic compasses have a 2-10 degrees of inaccuracy either side. Close enough to get you in the right region of sky, but not close enough to put an object directly in the FOV.

You could try and find a target like Jupiter, then find what angle it should read at, then adjust the digital compass accordingly to the same angle and then find another object just using the co-ordinates that it should be at that particular time and see how close it gets you.

Edited by insomnia
Link to comment
Share on other sites

another thing i have found is the digital compass on the iphone is really sensitive to being close to metal, i tried aligning my tripod with the phone on top and when i put it near it it moved round by about a quarter of a turn and moved back to north when i moved it away, so im not sure how accurate any electronic compass would be attached to a scope,mount etc??

Edited by starstalker
Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share

  • Recently Browsing   0 members

    • No registered users viewing this page.
×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue. By using this site, you agree to our Terms of Use.