DASCH: Digital Access to a Sky Century @ Harvard
A New Look at the Temporal Universe

Plate Information for b2312

Observatory NameCambridge
W. Longitude (deg)71.1292
Latitude (deg)42.38
Aperture (m)0.2
Scale (arcsec/mm)179.4
Telescope8-inch Bache Doublet, Voigtlander, reworked by Clark
Plate Class H

Plate Exposure Information
Exposure Number0
Exposure Time (minutes) 90.00
Right Ascension05:35:38.694
Geocentric Date1888-02-07T01:57:57.9
JD: 2410674.58192
Heliocentric Date1888-02-07T02:01:59.8
HJD: 2410674.58472
Plate Center SourceimWCS
Date SourceLogbook
Exposure Notes
Time Accuracy (days)0.0007

Raw Logbook Data -
Exposure Number0
Exposure Time (minutes)
Right Ascension
DateFeb 6-7 1888
Exposure Start Time5 35
Exposure Stop Time7 05
Exposure Hour Angle0 05 W
Logbook Remark
Logbook Notes
Error Type

No plate condition records present in the stacks database.

Plate Events Table
DateVersion IDPicked StatusStack LocationEvent NotesValid
2016-09-08T16-00-101Plate JPEGyes
2016-09-08T16-00-201Jacket JPEGyes
2018-11-20T09-29-581Jacket JPEGyes
2018-11-20T09-30-091Plate JPEGyes

Scan Data
Full MosaicFull mosaic downloads are not supported because of their size (> 700 MB each).
Scan Number0
Mosaic Number0
Scan Date2007-03-05T19-36-07
Average Tile ADU1882
Average Tile Saturation (pixels)782
Maximum Tile Saturation (pixels)20608
Scan Comment
Mosaic Comment
Mosaic Binning01,16
WCS Fit SolutionAvailable
Mosaic Rotation0