Calibration frames newbie question

[Ratcatcher]

Hi, I have just bought a 'dip your toe' CMOS camera and I am wondering, should I take flats and darks or is this only done with CCD cameras?

Thanks in advance 

Mike

[Adreneline]

9 minutes ago, Ratcatcher said:

should I take flats and darks

Hi Mike,

I use a CMOS camera and take flats and dark-flats (same exposure time as flats but with the cover on the camera), and I also take darks; I take them all at the sensor temperature I used for taking lights (-20 in my case).

Adrian

[alacant]

50 minutes ago, Ratcatcher said:

CMOS camera

Hi

If you can control the camera's temperature, take dark frames. If you can't, use bias frames with a dither in between exposures and stack your images using a clipping algorithm.

With modern astro-software, you can correct -non flat- fields, but maybe to begin with, take flat frames anyway in case your sensor has dust. With either of the above.

HTH

Edited July 29, 2020 by alacant

[Ratcatcher]

Thanks Adrian and HTH,  I will now make a light box. I will use a flat illuminated panel from Amazon as the are nice and cheap!

I will post results as soon as I take some AVI's and processed them.