winjupos amateur astronomy project designed to track/monitor cloud layers on jupiter
expanded to include other planets
particularly saturn

WHAT IT DOES:
derotates images/video
projects circular image onto sphere
then rotates based on time stamp and projects back to circular image

allows you to combine R G B images
allows you to combine OSC image captures longer than 3 minutes


can create alternate projections
N/S pole, cylindrical
etc.

in theory can derotate video stream and correct for alt-azm field rotation
very time intensive
in practice everyone recommends stacking short video segments and derotating the resulting images

imaging jupiter limited by planetary rotation
how long is too long? 
	2-3 min max
(demo image 1 minutes captures)
rgb vs OSC
	no difference saturn, RGB jupiter shows difference
luminance
	NO! short exposure helps with seeing, but is overwhelmed by chromatic aberration
	ADC (atmospheric dispersion corrector)'s?
wedge (GEM) vs alt-azm
	field rotation
		dramatic in 3 minutes
	field rotation demo
	autostakkert can correct alt azm rotation too!
	but wedge much more convenient for combining images

OVERVIEW OF STEPS:
-capture in fire capture (time stamp invaluable)
-stack (registax/autostakkert)
-provisional sharpening registax
-measure images in winjupos and save measurement file
-combine images in winjupos (using measurement files)
	-can combine at multiple time stamps
(combine R G B image)
	-combine all at once
-polar/cylindrical projections
-animations 

DETAILS

FIRE CAPTURE
settings, capture, settings, winjupos file naming
log file
extended avi
uncheck debayer
or check and select temporarily disable debyaer

combine in autostakkert/registax


AUTOSTAKKERT TIPS
batch process drag and drop
select frame percentages
drizzle 3x
more file options->open in registax (need to have registax running)

open registax and pre-process
	-wavelet, color balance, color offset preserved (not histogram)
	-cannot batch process images in registax (only video)
	-leave autostretch intensity off (serves to inform you when autostakkert done)

WIN JUPOS
install
set directory

IMAGE MEASUREMENT (MATCH WIRE FRAME TO IMAGE):
recording, image measurement, open image
adjust tab
adjust image appearance: +/- zoom, L/R rotate, (gamma, contrast, brightness)

LD compensation (next time, haven't mastered it yet)

match wire frame to image
confirm orientation
	-zoom out moons
	-check rotation direction with serial images
	-ephemeris button, graphics, texturing, options tab (mirror inverted if using a diagonal on SCT)
		-note location and mirror inverted on ephemeris tab *ARE NOT APPLIED TO IMAGE*
		-set location at image tab, set mirror inversion at opt. tab
	-saturn's shadow on rings
	-SCT + Diagonal is mirror inverted
		
line wireframe up 
pageup/down changes frame size, N/P rotates image, arrow keys MOVES *NOT "REMOVES"* frame
-can use options tab specify pixel size, focal length and aperture to get size close (empirically determine this for your image train and use long term)
*****for jupiter just click on outline frame->automatic detection, VOILA!*****

once you have frame oriented and lined up, go to image tab and select save
repeat for all images (very time consuming unless wedge/GEM due to field rotation)
same alignment vs align each time?
	-same alignment for each seemed to work better

COMBINE IMAGES:
Tools, De-rotation of images
edit, add
specify image info and directory (will overwrite)
select time reference (middle)
compile image
wavelets for final sharpening
	(combined stands up to more sharpening before artifacts evident)
-demonstration/comparison

COMBINE R G B IMAGES:
as before stack, provisional wavelets, measure
Tools, De-rotation of images
edit, add
set time reference (mid exposure)
set weighting of green and blue to zero to combine red
likewise for green and blue (there's probably a better way to do this)

tools, De-rotation of RGB frames
select measurement file for combined color frames
compile image
**does not work if time reference for individual color frames different**


PROJECTIONS:
analysis, map computations, edit, add
stereographic polar projection
compile map

	-HEXAGON
cylindrical

DEROTATION OF LONG VIDEO
-not recommended
provisional sharpened combine with measurement
tools, derotation of video streams mono or RGB (has to be debayered?)
-in theory can compensate for field rotation in altitude over azimut mounts
demo (several hours processing time for 10 minute video)

CONCLUSION:
-allows longer exposure/capture time on rapidly rotating planets
-improved image when combining multiple captures of similar quality
-not as good if there is only one standout
-critical for R G B imaging vs OSC
-polar/cylindrical projections

NEEDS WORK:
-LD compensation
-better alignment (each frame vs same for session)