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

Plate Information for ac26097

Observatory NameCambridge
W. Longitude (deg)71.1292
Latitude (deg)42.38
Aperture (m)0.038
Scale (arcsec/mm)606.4
Telescope1.5-inch Cooke Lenses
Plate ClassW
Photograph(s) of the Plate JacketView the plate jacket (7.5 MiB).
View at reduced resolution
Photograph(s) of Plate and AnnotationsView the plate photo (8.5 MiB).
View at reduced resolution


Plate Exposure Information
Exposure Number0
Exposure Time (minutes) 176.00
Right Ascension04:07:13.599
Declination+30:49:19.72
Geocentric Date1925-10-24T06:27:56.8
JD: 2424447.76941
Heliocentric Date1925-10-24T06:34:40.5
HJD: 2424447.77408
Plate Center SourceimWCS
Date SourceLogbook
Exposure Notesexp is 60 64 52
Time Accuracy (days)0.0007


Raw Logbook Data - View the logbook page
Exposure Number0
Exposure Time (minutes)mult
Right Ascension4 0
declination30.0
DateOct 23-24 1925
Exposure Start Time2 24
Exposure Stop Time5 20
Exposure Hour Angle1 36 e
Logbook Remark
Logbook Notesexp is 60 64 52
Error Type


Plate Condition Table
DateVersion IDPicked CommentPicked NotesValid
2017-09-14T12:39:441Multipleyes


Plate Events Table
DateVersion IDPicked StatusStack LocationEvent NotesValid
2016-03-04T17:00:491Pickedyes
2017-09-14T12:39:441Pickedyes
2017-09-15T16-23-301Plate JPEGyes
2017-09-15T16-23-401Jacket JPEGyes
2017-09-21T13-29-321Scannedyes


Scan Data
Binned Plate Thumbnailsorry, the binned mosaic (3 MiB) is not available due to temporary data access restrictions
Full Mosaicsorry, the full mosaic (730 MiB) is not available due to temporary data access restrictions
Image 0.083333 deg radius at 70.921785 deg RA 47.347260 deg DEC J2000sorry, the cutout is not available due to temporary data access restrictions
Scan Number1
Mosaic Number1
Scan Date2017-09-21T13-29-32
Average Tile ADU2172
Average Tile Saturation (pixels)2399
Maximum Tile Saturation (pixels)10725
Scan Comment
Mosaic Comment
Mosaic Binning01,16
WCS Fit SolutionAvailable
Mosaic Rotation0