DASCH : Digital Access to a Sky Century at Harvard A NEW LOOK AT THE TEMPORAL UNIVERSE Gallery of Interesting Plates

These thumbnails link to images of some of our favorite objects
(and those are reduced by a factor of 16 in each dimension from the digital scanned images).

	Portion of Plate b41215 of Halley's comet taken on April 21, 1910 from Arequipa, Peru with the 8-inch Bache Doublet, Voigtlander. The exposure was 30 minutes centered on 23h41m29s R.A. and +07d21m09s Declination.
	Plate a27014 of Large Magellanic Cloud taken on October 27, 1949 from Bloemfontein, South Africa, with the 24 inch Bruce Doublet. The exposure was 60 minutes centered on 5h25m23s R.A. and -68d55m01s Declination.
	Plate b26816 of Large Magellanic Cloud taken on December 18, 1900 from Arequipa, Peru, with the 8 inch Bache Doublet, Voigtlander, reworked by Clark. The exposure was 60 minutes centered on 5h09m47s R.A. and -67d22m51s Declination. We have not removed the annotations made on the back of the plate because this plate is referenced in the Henrietta Leavitt logbooks made during her research on Cepheid stars.
	Portion of Plate mf37250 of Rho Ophiucus taken on May 30, 1948 from Bloemfontein with the 10-inch Metcalf Triplett. The exposure was 45 minutes centered on 16h26m07s R.A. and -26d19m43s Declination.
	Plate ir12723 of M44 taken on February 15, 1974 from Oak Ridge with the 8-inch Ross Lundin. The exposure was 15 minutes centered on 20h37m31s R.A. and +20d37m31s Declination.
	Portion of Plate b2312 showing the discovery image of the Horsehead Nebula in the collection. Taken on February 7, 1888 from Cambridge with the 8-inch Bache Doublet, Voigtlander, reworked by Clark. The exposure was 90 minutes centered on 5h55m33s R.A. and -4d57m06s Declination.
	Single scanner tile (not colormap reversed) of Plate mc24889 showing what is variously known as minor planet 134340, the first dwarf planet, or planet Pluto. Taken on April 23, 1930 from Cambridge with the 16-inch Metcalf Doublet after Clyde Tombaugh's discovery of the object on February 18, 1930. Pre-discovery images may also be found in the Harvard collection. The exposure was 92 minutes with the plate centered on 7h20m36s R.A. and +21d41m08s Declination.
	Single scanner tile of Plate x500 showing 4 Tuc
	The Fly Spankercontains calibrated star images for magnitude estimation. The size of the head is 4.1 cm x 2.1 cm and the overall length of the head and handle is 7.9 cm. This device got its name because it was too small to be a fly swatter.
	Single scanner tile of Plate b16502 of an unwelcome visitor taken on June 28, 1896 from Arequipa, Peru with the 8-inch Bache Doublet, Voigtlander.