Degen1103 Affiliation American Association of Variable Star Observers (AAVSO) Wed, 07/12/2023 - 14:12 Should check star has brightness close to target, or it is not so important? SGEO Affiliation American Association of Variable Star Observers (AAVSO) Wed, 07/12/2023 - 15:09 check star choice Matching the comp star to the target in brightness and color is more important. But you want to have good data from the check star too. Expose to get a snr of 100 for target, comp and check. Which probably means they will be of comparable brightness. :) George Log in or register to post comments Degen1103 Affiliation American Association of Variable Star Observers (AAVSO) Wed, 07/12/2023 - 15:32 Thank you, George, I'll try… Thank you, George, I'll try.. But all of them are so different:))) Log in or register to post comments
SGEO Affiliation American Association of Variable Star Observers (AAVSO) Wed, 07/12/2023 - 15:09 check star choice Matching the comp star to the target in brightness and color is more important. But you want to have good data from the check star too. Expose to get a snr of 100 for target, comp and check. Which probably means they will be of comparable brightness. :) George Log in or register to post comments
Degen1103 Affiliation American Association of Variable Star Observers (AAVSO) Wed, 07/12/2023 - 15:32 Thank you, George, I'll try… Thank you, George, I'll try.. But all of them are so different:))) Log in or register to post comments
Matching the comp star to the target in brightness and color is more important.
But you want to have good data from the check star too.
Expose to get a snr of 100 for target, comp and check.
Which probably means they will be of comparable brightness. :)
George
Thank you, George, I'll try..
But all of them are so different:)))