February 2007 Archives

24 Comae Berenices (Struve 1657)

Click above image for larger version Observation Notes: This widely spaced double in Coma Berenices is a real showpiece, particularly when seeing conditions are good. The primary is a deep yellow-orange in color with a rich blue secondary hovering to the west. The steadily shimmering diffraction rings made them look...

Struve 1669

Observation Notes: About a degree and a half south of the Sombrero Galaxy, M104, you'll find the multiple star, Struve 1669. The main attraction here is a pair of 6th magnitude F class stars. When observing them, don't forget to take in a third, tenth-magnitude star 1 arc minute...

Delta Corvi

Observation Notes: Have you ever seen a brownish-gray star? Probably not if it wasn't plunked down right next to a bright, colorful companion. This pair featured a pale sky blue primary with a secondary that appeared brownish-gray by comparison. According to the Catalog of Stellar Spectral Classifications (Skiff, 2005),...

3 Centauri

Observation Notes: This bluish pair gave the appearance of sky blue for the primary and blue-gray for the secondary. My estimate for PA was 115°. Seeing was very poor in the area, and made the diffraction rings impossible to see clearly. My best guess was 5-10 arc seconds. Actual...

N Hydrae

Observation Notes: I was unable to tell which star was the primary, so the PA appeared to be either 203° or 157°. Separation seemed to be about 10 arc seconds. WDS values from 1783 are 210° and 9.3 arc seconds. That's a pretty old measurement, and I'm not sure...

The Cerulean Arc

My weblog for
everything else non-astronomy

Pin at will!

(Thanks for maintaining
return links.)

About this Archive

This page is an archive of entries from February 2007 listed from newest to oldest.

January 2007 is the previous archive.

March 2007 is the next archive.

Find recent content on the main index or look in the archives to find all content.


Monthly Archives

Powered by Movable Type 5.2.3