[Quark (Trevor)]

Hi All,

Imaged Jove this morning in reasonable seeing for the alt.
Over the last several years all of my IR data has been captured at 807nm with a Astronomik Planet Pro IR filter with either my Flea3 FW or Flea3 GigE cameras. More recently I also purchased the Astronomik Planet Pro 742nm IR filter, mainly for Saturn to get higher frame rates.

This morning the seeing was quite stable so I captured successive IR data sets, 742nm, 807nm, 742nm, 807nm with my new ASI 120MM camera which, according to the spec's would seem to suffer into the IR compared to my Flea3. I have attached the the final two data sets. Regardless of the filter I am using I always like to go with a histo of approx 90%. In this instance the 742nm had a histo of 89%, Gain=78 at 60 FPS. The 807nm had a histo of 91%, Gain=100 at 47 FPS. The processing for each data set was identical.

Disregarding the brightness of the images and concentrating on the actual detail, it seems that most of the detail in the 742nm image is also visible in the 807nm image, that said, with this particular camera I am inclined to go forward with the 742nm filter.

Regards
Trevor