Fri, 11/05/2021 - 07:52
My first two pics uploaded in Vphot but when I open them in Vphot, they are just black.
Although I can see no stars, measuring is possible!
So only no stars are visible. When I open these pics in for example Astrometrica, they work...they show stars.
So don't know what the problem is.
Kind regards
Wim
You might try searching AAVSO.org for “vphot black image”. A few things can cause that. One issue is VPhot’ s automatic contract adjustment does not work and you need to adjust it yourself.
Cliff
Wim:
Open your image and then look under Tools>Image display. On the histogram, you can adjust the black and white levels to make the image visible. Try it out. Learn how to do this!
Ken