Upsilon Cassiopeiae
Upsilon Cassiopeiae
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Upsilon Cassiopeiae
Edmonton, Alberta, Canada
2019-Sep-13
Exposures: RGB 44/47/50 x 2m = 4h 42m
Processing: SGP, MaximDL, Gimp
Telescope: CFF132,STF-8300M,GM1000
Guider: LE80,LSX2,GSO2X
υ1 and υ2 Cassiopeiae are a pair of stars located in the Cassiopeia constellation. Together they are known as Upsilon Cassiopeia.
The two bright stars in this image are known as Upsilon Cassiopeia (υ Cas). As the preceding link shows, SIMBAD stores this name as a valid database entry. But it is just a placeholder for the name and there is no information attached. To get any data on the stars themselves, you need to access the individual star records as identified below.

The bright star in the upper left is Upsilon2 Cassiopeiae 2 Cas). This star is also officially named Castula or 28 Cas. υ2 is listed in SIMBAD as a peculiar star. It is magnitude 4.62 star with the spectral type G8.5IIIbFe-0. This is a yellow giant and it is 57.8453 parsecs distant.

The bright star to the lower right is Upsilon1 Cassiopeiae 1 Cas). Upsilon1 Cassiopeiae is listed as being a high proper motion star. This means it is moving through space faster than most stars we know of. υ1 is magnitude 4.82 and its spectral type is K2III, making it a K-type giant. It is 104.1406 parsecs away and is also known as 26 Cas.

Below Upsilon1 and just past the bottom of this image is W Cassiopeiae, a nearby carbon star. Although not shown I thumbnail below, in the full size version of the W Cassipeiae image, Upsilon1 is visible at the very top of the field. To see these two stars in the same image, visit the W Cas page from the thumbnail link below and scroll to the top of the full size image.

Images of Upsilon1 Cassiopeiae
Upsilon1 Cassiopeiae imaged with an STF-8300M CCD camera and a CFF 132 refractor
υ1 and υ2 Cas
W Cassiopeiae imaged with an STF-8300M CCD camera and a CFF 132 refractor
W Cas
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