Well last night i had the 254 set up while designing a concrete bridge deck and beams, who says men arnt good at multi tasking!
After my last run it was apparent that my collimation techniques wernt upto scratch, so i stumbled across a video tutorial from cats eye... All i can say is it was the first time i have seen all the visual cues align! (Mike youll know what those cues are
they are heavenly when you finally get them).
After all that i took on the dusty area of Corona Australis at about 1130am it had just cleared the garage in the back yard (I could still see the roof in the finderscope!) Set the OAG for 2 second exposures on bin 2x2 which yielded great guide stars, and then set maximdl to run for 3.5hrs.
Average FWHM on stacked images was 2.8, and guiding was sitting within .5 pixel (about .6 seconds of arc) the whole night.
Taken at -25dc (would have done -30 but there is horrible artifacts so ill just live at -25). Filters where QHY standard.
L bin 1x1, 120min @ 10 min each
RGB bin 2x2, 25:25:30 @ 5 min each
Stacked in CCDstack V2, PS CS5 processed
1.3mb image full res.
http://brendanmitchell.net/wp-conten...0_25_25_30.jpg