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M81 is the largest of the "M81 Group" of about a dozen members. M81 is one of the densest galaxies known. It contains the mass of about 250 billion suns which somewhat exceeds the mass of our own Milky Way. However, at a diameter of about 36,000 light years, it is less than a third the size of the Milky Way.
For more info and images of M81/M82, CLICK HEREThis photo was a 40 minute exposure on hypered TechPan through the 16" Newt.
M51 is a giant spiral galaxy not too different from our own Milky Way in both size and number of stars. It lies at a distance of about 15 million light years.
The companion galaxy (NGC 5195), although appearing to be connected to M51, is actually farther away as determined by its somewhat greater red shift and radial velocity. Although not obvious in some photos, this one seems to show the spiral arm and dust lane of M51 passing in front of NGC5195.
This image was a 20 min exposure on the MX7C CCD camera through the 16" telescope. It is the first image taken with the new camera and actually consists of two 20 min images stacked.
This photo was taken through the 10" Newt at prime focus on Hypered TechPan.
The exposure was 60 minutes and guiding was with an ST-4. The film was developed in D19 developer for 4 min.
This photo was taken through the 10" Newt at prime focus. It is a mosaic of two photos, each centered on the edge of the galaxy and stitched together after scanning.
The exposures were each 60 minutes on hypered Techpan.
For MORE M31 see Special Feature M31
This photo was taken through the 16" Newt at prime focus.
The exposure was 60 minutes on hypered Techpan.
The Sombrero Galaxy in Virgo
All photos taken with the.....JSP ASTROCAMERA
[Remote Extra-Galactic Photos]
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