Affiliation
American Association of Variable Star Observers (AAVSO)
Tue, 11/13/2012 - 17:24
Hi Guys.
I have some images taken with the SSO Rigel telescope and one (or two) is just to bright for the current phase.
The Rigel telescope dosnt have a standard V filter but in their web page they claim that the error is abt 1%.
I have nearly 10% error.
My measurment on the 29/11 2012 is abt Vmag 12.1.
The comp stars are ok. So is the snr.
Is there any futer transformation that has to be done to get a correct Vmag?
I dont wanna upload faulty mags so ofc i will take it out from the db if its bad.
Could one of you guys take a look on my image. To whom would i share?
thanks .
Pierre from cloudyland sweden ...:)
Pierre, I have only used the Rigel telescope a few times (over two years ago) and was not satisfied with its image quality. I use the SSO 24" frequently and have had excellent results using 10 and 30 second exposures in Johnson V. With 10 second exposures, I can get to about magnitude 9 or slightly brighter before saturation and 30 second exposures come close to saturation at magnitude 10.5 or so. I get decent SNR and error bars on images down to magnitude 14 to 15 or so in Johnson V. I hope that this helps. Kevin Paxson - PKV
Hello Pierre,
Do you have any information about the filter they have in the camera? I find conflicting information on their website as to whether it's RGB or BVR. I assume this isn't an RGB color camera (separate pixels for the RGB channels)?