Observation Log - October 17, 2001 - Tinton Falls, NJ

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A poor night tonight. Got started on a couple of objects, but it started raining 14 minutes into the second galaxy! Everything got a little wet... Configuration was Crayford/f3.3 reducer/T-adapter/MX516 camera with no filters. The camera was mounted upside-down and hadn't been moved since the previous night's session, so those flats can be reused. Note that all exposures were 2-minutes long tonight!

This object is NGC6835, a galaxy in Sagittarius, magnitude 12.5, dimensions are 2'.4 x 0'.7, and the surface brightness is 11.8 mags/sq arcmin. This image was composited from 28 two-minute exposures for a total integration time of 56 minutes. The images were taken between 7:35 and 8:41 p.m. the evening of October 16, 2001. The image was calibrated and aligned in MaxIm, using a sum composite. The resulting composite image was rotated 180 degrees, flattened, and then processed with a Development filter (FFT, low-pass, mild). Then I used an unsharp mask (FFT, low-pass, hard) and finished with a contrast stretch. Here is another version of this same image, resampled to twice the image scale.

This object is NGC7241, a galaxy in Pegasus, magnitude 12.6, dimensions are 3'.4 x 1'.1, and the surface brightness is 15.1 mags/sq arcmin. This image was composited from 7 two-minute exposures for a total integration time of 14 minutes. The images were taken between 8:49 and 9:04 p.m. the evening of October 16, 2001. The image was calibrated and aligned in MaxIm, using a sum composite. The resulting composite image was rotated 180 degrees, flattened, and then processed with a Development filter (FFT, low-pass, hard). Then I finished with a contrast stretch. Here is another version of this same image, resampled to twice the image scale.