Mono Planetary & Rotation

[Mav359]

Hi guys just a quick one i hope

I want to by a usb powered CCD/CMOS Camera for Lunar/Plantery/Solar.

Various cameras have been recommended in the £250(ish) range but one thing keeps getting said.... "Mono". Now that would require me to buy a filter wheel and a filter set which is more expense then i was going for but i have become curious

I have heard that if you are imaging Jupiter that you can't image for more then 90secs(ish) or you will start to see rotaional artifacts in the picture so you shoot your AVI for that long but if you have to use all three filters then do you only shoot for 30secs each filter to capture the data? & is jupiter the only Solar System based target that this effects?

Cheers

[knobby]

I'm no mono expert but I believe they use a program called winjupos to counter the effect of rotation ...

[riklaunim]

For short time lapses there is no problem with rotation. RGB within 3-4 mins will look good on standard RGB creation, bit better with winjupos RGB creation (it will take rotation state of every channel into account and align it). I use WinJUPOS for Jupiter nearly always, but I usually do LRGB - luminance channel recorded with L, yellow or orange filter - and the L channel is usually few minutes apart from RGB channels shoot in sequence and for shorter time.

[Mav359]

Cheers Guys

One more question....

Why does no one appear to do plantary in narrowband?

[riklaunim]

Some people do - in methane band Jupiter and sometimes Saturn. Venus has a night side radiation band at 1010 nm too. DS narrowband has no use on planets.

[Pete Presland]

For short time lapses there is no problem with rotation. RGB within 3-4 mins will look good on standard RGB creation, bit better with winjupos RGB creation (it will take rotation state of every channel into account and align it). I use WinJUPOS for Jupiter nearly always, but I usually do LRGB - luminance channel recorded with L, yellow or orange filter - and the L channel is usually few minutes apart from RGB channels shoot in sequence and for shorter time.

stupid question alert    how does winJUPOS know where the axis is on the planet?

[riklaunim]

you enter exact time and date and then you mark the planet outline - then he knows everything. Check this tutorial

[tingting44]

does anyone know any good NOOB videos for WINJUPOS.....? i downloaded for the 1st time earlier, but dam is it one hell of a hard program to use and figure out/get ya head round lol, i have been looking on youtube but the vids are not very good at all

[riklaunim]

Check my tutorial linked above. There isn't much to show. Making so called measurements and then creating RGB/LRGB images is easy and short.