Sun, 03/18/2018 - 18:14
Good afternoon. My name is Antonio and I'm new to this forum, I hope this is the place to write my question.
I have a CCD QHY8 L in color with pixels of 7.8 microns. Working in bin 2x2 the images have no bayer matrix but their pixels are now 15.8 microns. Can I do photometry with it?
The truth is that I do not use it at all. As telescopes I use a Celestron C11 and a refractor TS115 at f / 6. Thank you very much for your answers and your time.
Antonio
Hey Antonio.
It seemes that you have excelent equipment.
Have you read the DSLR Manual
https://www.aavso.org/dslr-observing-manual
and the supplement
https://www.aavso.org/sites/default/files/publications_files/dslr_manua…;
Have you considered to observe an Supernova
http://www.rochesterastronomy.org/supernova.html
There are many interesting variable stars.
Have you tried EPS AUR
It is very bright, so it would make sense to observe it in colours (that meanes bin 1 x 1).
Clear Skies
Søren Toft
Goetheanum
Hi Antonio,
I mostly bin my CCD 3x3 which gives 27 micron pixels. Depending on the brigthness of the star I can easily go to millimag precission photometry.
With your C11 the pixel scale is very reasonable as probably the seeing at your place is not better than 2 arcsec or so.
You should go for it. The AAVSO has many stars to be observed and there are also ASASSN which discoveres new interesting stars by the dozen.
http://www.astronomy.ohio-state.edu/~assassin/transients.html
Those can be observed e.g. without filter.
Regards,
Josch
Thank you very much for your information.
Two years ago I was doing magnitude transformation tests with the QHY8L and I found them disappointing. I have always thought that there is a defect in the camera so I asked about bining. In any case, I am sorry I did not express myself correctly but I would mount it in the refractor TS115 because it is with which I do photometry. The C11 is dedicated to the measurement of double stars. In any case I greatly appreciate your information and I will study all the links.
Indeed Josch my seeing is never better than 2 and my skies are bad.
I am very grateful for such accurate information.
Clear skies.
Antonio