Neximage diff brightness on Jupiter

[Lester]

Hi,

Seeing tonight was absolute rubbish so I tried;

1=5fps gain=75 gama=0 exp=1/50 sat=50 brightness=50

2=5fps gain=75 gama=0 exp=1/25 sat=50 brightness=25

Unfortunately no.2 is burnt out in the bright areas. I had to brighten no.1 quite a bit. No saturation on either image to show colour difference.

Was hoping for onions on one of these but alas there was none.

[Rigel003 (Graeme)]

Hi Lester
Pretty good for the seeing. I take it you've cut back on the saturation setting fairly severely. The colours of these, esp the 1st one, do look more "Jupiterish" to my eye.

Just occurred to me that the orange that's prominent in some of your past images is due to your using a Celestron imager

Graeme

[Lester]

Hi Graeme,

the saturation is the same for both=50. Only the brightness is increased in the first.

[Rigel003 (Graeme)]

I prefer the brighter one. Are you using a Neximage? I thought it was supposed to be the same camera as the Toucam but I've needed to use closer to 100% saturation on the Toucam.

Graeme

[Lester]

Yes Graeme,

I am still using the neximage. Use to use 100 on saturation but found that 50 showed more detail. Asi who uses a toucam always uses 100 on saturation.

If the second image wasn't so burnt out in the bright areas I could brighten it, but will wait for conditions to improve and try again.

[asimov (John)]

If seeing is "absolute rubbish" then drop the 5FPS...5FPS in crap seeing is absolutely worthless. Goto 10FPS. 50% brightness 100% saturation 0% gamma 50% gain to start with. Not sure what else to suggest for settings (yet)

Alter exposure setting until its not too bright, not too dark. If you cant find a happy medium there, go your nearest quickest exposure, which should be slightly darker than what you would like. Bump up the gain slowly until it looks ok, but not too bright. Bump the gamma to 10-15% <<(optional) Capture 1000 frames! (100 secs) Take it to registax, use the default classic method/85% lowest quality. If you get more than 350 frames + in the stack, use waveletts 6 @ 70% 5 @ 40% No other waveletts!<<(user pref. here depending how many in stack! Lower 6 & 5 accordingly)Touch nothing else! Take it to PP save the BMP as a JPG (& do nothing else)....Record all settings, post the bloody thing.

[asimov (John)]

..

[iceman (Mike)]

I use 95-100% saturation with the ToUcam.

Asi's advice is on the money. I also use 45-50% gamma.

[Robert_T]

Lester, you'll know I appreciate trying even when the seeing is cruddy

There is a definite difference in saturation between Toucam/900nc and the neximage. WHen I first used the 900nc it was like imaging in black and white comapred with the neximage because I only had saturation around 50% (which for the neximage is all you need).

cheers,