Cloister's Astronomy Pictures
- 68 Virginis and PGC 47021
- M57, monochrome. 11 5-second exposures combined by addition
- M57, monochrome. 11 5-second exposures combined by averaging
- M57, monochrome. 11 5-second exposures combined using median combine
- M57, LRGB composite. 10, 14, 12, and 15 exposures in L, R, G, and B, respectively, at 5, 5, 5, and 8 seconds, combined by addition.
- M57, LRGB composite. 10, 14, 12, and 15 exposures in L, R, G, and B, respectively, at 5, 5, 5, and 8 seconds, combined by averating.
- M57, same additive LRGB image, uncropped full frame. Included for completeness.
- M57, same averaged LRGB image, uncropped full frame. Included for completeness.
- A second attempt at M57. From a series of
3x30 second R, G, and B images, i took the best one of each color and
combined them. There are terrible turbulence artifacts in each
channel, which is obvious in the colorful and highly non-round nearby
stars. The ring itself looks pretty good, though.
- Jupiter This image started as a series of 5 0.01
second R, G, and B exposures, taken through a mask that cut off all
but about 13 square inches of aperture (equivalent to about a 4"
scope). Even at that short exposure, Jupiter was so bright that most
of the details are washed out. And, of course, none of its moons are
visible in the shot, although they were in a nice evenly spaced line
to the lower-right of the frame. It's a shame the moons weren't
visible at so short an exposure, because that made aligning the color
channels a lot harder.
- Yet another failed attempt at taking a
picture of IC1296. This was a 30 second exposure, one of a series of
five. All five showed terrible turbulence problems; this one I kept
because the turbulence made the stars, well, star-shaped! How could I
possible throw such a gift away?
- Arcturus, highly unfocused. .01 second exposure.
All images processed using Software Bisque's CCDSoft version 5.00.071
