I am writing up a start-to-finish guide, mainly for my wife so she can use the scope when I'm not around and get her own images. and she grabs one of them if I start talking about $750 and up. she starts eyeing the larger kitchen knives when I mention $600. The second etalon will set me back $850 and some change. It is important to note that this is a compromise due to not having a double-stacked scope. I'm using a trick inside of imppg to pull this off, which is why there is a bright limb. This is only a single image, there isn't a prom layer and a disk layer being stacked. I only used Gimp to flip image horizontally and do final level adjustments. With the surface inverted it makes it fairly easy to blend in with the prom layer.
#Umbra basic photoline umbra free#
Looks nice! Do you use Photoshop? If so you could process it twice, once for proms and once for the surface, then combine them and use the Free Transform to enlarge the surface image to overlay that bright ring you have around the limb. I'll link that as soon as youtube finishes processing the video. I have a video covering what I do in imppg, it is a bit much to describe in text. 3.0x is too much and there isn't much improvement over 1.5x, but 1.5x does help knock down the grid pattern a bit from the imx178 sensor based cameras while bringing out a bit of subpixel info.Īfter that, I take the image into imppg and gimp. I then stack the images in autostakkert 3.0, and apply the 1.5x drizzle enhancement. I grab 1000 images, which corresponds to about 20 seconds of time, probably adequate to avoid motion blur due to an active sun. I doublecheck the offset to make sure the black value is as low as I can get it.
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I'll find out when I can doublestack without having my wife murder me.Īfter tuning, I adjust the exposure to get it so the upper end of the histogram is around 85-90% of full saturation. I don't think a single-stack is selective enough to make doppler tuning a thing yet. At this point, a majority of the photosphere is being blocked, but it may be necessary to fine-tune it to a certain feature. Then I turn on the histogram for SharpCap and pressure tune the scope and try to get the median of the histogram as low as far to the right as possible. Lately I've been setting gain to 25 and adjusting exposure until the upper end of the histogram sits at about 85-90.īasic image acquisition process is rough focus, rotate camera to align field to celestial pole, fine focus.
What exposure/gain did you use? Were you simply able to stretch the prom colors without destroying the surface? I think we have almost the same setup so I'd like to try that.įor this shot, I had gain at zero and exposure at 2.2ms, 1x1 binning, "16" bit capture (actually only 14). That is really great that you got proms without blowing out the surface.
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