Ritter Observatory Nightly Log Sheets

Portion of raw image of the Fe-Ar calibration lamp taken with the Low-Dispersion Spectrograph, shown in false color

Since early November 2004, our observers have been filling in the observing log on line. Here you may display the log sheet for each night. For a key to the observers' initials, see the Observing Schedule.

Previously, the logs were filled in by hand. Copies for any given night are available on request to the Observatory Research Assistant, Erica Hesselbach.

• For the échelle: maximum value of mean of all rows of CCD. If this number is about 160 or above, the signal-to-noise ratio in the reduced spectrum will be 100 or better, per pixel, in the H alpha region.
• For the LDS: average value in box in middle of spectrum. Here the benchmark value for a SNR of 100 or better, per pixel, is about 500 ADU.

• November 6
• November 7
• November 8
• November 9
• November 10
• November 13
• November 14, page 1 ... page 2
• November 15
• November 22
• November 23
• November 26
• November 29
• December 2
• December 4
• December 16
• December 17
• December 18
• December 20

• January 15, 16, 17, 28, 29, 31
• February 2, 4, 5, 11, 13, 25, 27
• March 3, 4, 7, 9, 13, 14, 16, 17, 19, 25, 27, 29, 31
• April 1, 4 (page 1, page 2), 5, 6, 9, 10, 11, 12, 13, 14, 15, 16, 17, 19, 20, 22
• May 1, 4