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Cometary Observations: Ledgers, 1890 - 1914

Reference Code: GBR/0180/RGO 165

Scope and Contents

Three bound volumes of printed forms (Royal Observatory, Greenwich Form 93) containing handwritten computations of star corrections applicable to Mean R.A. and N.P.D., by Stone's tables.

Each form provides the following information: day and hour, star's name, R.A./Dec., data for proper motion, sum and number calculations, correction for P.M., and star corrections (mean place and appt. place for day), ending with the initials of the computer and/or examiner.


  • Creation: 1890 - 1914


Conditions Governing Access

From the Management Group:

Unless restrictions apply, the collection is open for consultation by researchers using the Manuscripts Reading Room at Cambridge University Library. For further details on conditions governing access please contact Information about opening hours and obtaining a Cambridge University Library reader's ticket is available from the Library's website (


1 archive box(es) (3 volumes) : Paper

Immediate Source of Acquisition

Internally generated records.

Repository Details

Part of the Cambridge University Library Repository

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