NGC 7331 Spiral Galaxy
by Lauren Roso and Evans Brown
| Right Ascension (h:m) | Declination (deg:m) | Distance (kly) | Apparent Magnitude | App. Dimension (arcmin) |
| 22:37.1 | +34:25 | 4600 | 9.5 | 11x4 |
Background
Information on the NGC 7331 Spiral Galaxy:
- Discovered by William Herchel in 1784.
- Among the earliest recognized spiral galaxies
- Closely resembles our neighbor, the Andromeda Galaxy
- Located in the constellation Pegasus
Our Observations:
- Our exposures were taken at the Macalester Observatory, located in Saint Paul, MN, on November 18th, 2006. We used a 16" reflective Cassegrain telescope and a CCD imaging device.
- Conditions were fair, the sky being slightly hazy. The absence of the moon provided less light interference.
- At 7:05 pm, we took a 240 second dark exposure, followed by exposures of equal length with a V, I, and B filter. Our observations ended at approximately 7:30 that same evening.
- Our composite image is posted above, in which the images from all three filters are combined.
Resources for the Project:
- www.seds.org/messier/xtra/ngc/n7331.html
- www.astropix.com
- http://www.astrosurf.com/binou/NGC%207331.gif
- Dr. Barton Pritzl
CCD image from a higher resolution telescope that Lauren and Evans definitely did not take.
- Discovered by William Herchel in 1784.
- Among the earliest recognized spiral galaxies
- Closely resembles our neighbor, the Andromeda Galaxy
- Located in the constellation Pegasus
Our Observations:
- Our exposures were taken at the Macalester Observatory, located in Saint Paul, MN, on November 18th, 2006. We used a 16" reflective Cassegrain telescope and a CCD imaging device.
- Conditions were fair, the sky being slightly hazy. The absence of the moon provided less light interference.
- At 7:05 pm, we took a 240 second dark exposure, followed by exposures of equal length with a V, I, and B filter. Our observations ended at approximately 7:30 that same evening.
- Our composite image is posted above, in which the images from all three filters are combined.
Resources for the Project:
- www.seds.org/messier/xtra/ngc/n7331.html
- www.astropix.com
- http://www.astrosurf.com/binou/NGC%207331.gif
- Dr. Barton Pritzl
CCD image from a higher resolution telescope that Lauren and Evans definitely did not take.