How to define transformation coefficients for an instrument

Gianlucanigro · August 27, 2024, 7:31am

Hi,

I’m looking for information about the procedure to use for determining the transformation coefficients for a telescope.

There is a comprehensive guide somewhere?

Thanks

MZK · August 27, 2024, 4:37pm

Gianluca:

See the attached instructions. I will place the same instructions in a post at the top of the VPhot Forum.

HTH, Ken

VPhot TG Transform Coeff Process Rev1.docx (20.5 KB)

Gianlucanigro · August 27, 2024, 4:59pm

Thanks Ken, it’s exactly what I needed

Have a nice day

Degen1103 · September 2, 2024, 4:13am

I can not transform images from NH2c telescope. Are there actual coefficients?

MZK · September 2, 2024, 2:53pm

Mikhail:

Do you see any coefficients listed yet in VPhot?

Ken

Degen1103 · September 3, 2024, 12:15pm

No, I did not find coefficients for NH2c.
Maybe NH2 data will suite?

MZK · September 3, 2024, 1:34pm

Mikhail:

You are correct. I have not generated the coeffs for this new camera (NH2c) yet. We are now collecting images of std fields. Coeffs should be available soon??

In the interim, you can submit untransformed data or wait.

Ken

Degen1103 · September 3, 2024, 4:01pm

Thank you, Ken, no problem.