Hi Darryl,
I wish that were the Case, then amp glow would be no problem to deal with,
before I Fixed the light leak, by just taping the slide openings with electrical tape, I noticed the leak when taking dark frames.
there are a couple of street lamps from where I observe in the field In front of my Community Complex, the skies are fairly dark, Mag 6.5 with no problem, I noticed that if I stood in front of the intruding street lamps almost 150 yds away, I would not get the light leak with the filter slide installed, but when I moved away from the Scope, and let the lamp light reach my DSI pro slide, I would then see it in all of my darks, and as a light gradient in my images.
it also depended on what angle my scope was in when darks were taken.
I usually take my dark frames with my scope pointed at a rough Polar alignment, which is just the right angle from the street lamp to find its way onto the ccd chip via internal reflectons from the small gap between the filter slide and the camera body.
I had come up with a fix for this, I believe I posted a remedy under need a Dew shield for Your Dsi in this same section we are in now, but then I still had the dew problem just by moving the slidecinto the exposed side of the dew shield, it was also hard not to slightly jog the scope out of frame alignment for each filter exposure due to the fact that I had to use just a liitle more pressure to move the slide past the first fliter when the slide had to make its first protrusion in to the other side of the Dew shield.
the dew shield had to be tight so you had to spread the dew shield while pushing on the slide for the second filter set .
I used to use my slide from right to left, first was Red with IR, then blue with IR, and finally green with IR, since the first, or red filter did not protrude into the other side of the dew shield, I would knock my frame alignment out by applying the force needed to spread the Dew shield apart while pushing on the slide to get past the first filter exposure. here is a pick of what I devised but then later abandoned, due to this difficulty. once you had completed exposures in high humidity or frost conditions this would build up on the other side of the dew shield so it had to be cleaned after each filter set was exposed and another Imaging run was started.
This was way too much trouble to go through for my tastes so I just removed the slide and taped the slide openings shut and use it in mono only,when Iwant Color Inow resort to the DSI oneshot color camera
Dennis
