From:
George Dollond
To:
Sir John Herschel
Date:
[3 January 1843]
Source of text:
TxU:H/M-0167; Reel 1087
Summary:
Suggests modifying square base of JH's telescope to round base. Estimates cost at £80 to £100.
Contributor:
John Herschel Project
Showing 1–3 of 3 items
Suggests modifying square base of JH's telescope to round base. Estimates cost at £80 to £100.
Approves GD's modification of driving wheel [for JH's actinoscope]. But GD's cost estimate exceeds total R.S.L. grant of £100. JH cannot approve more than £70; must have funds left for optics and clockwork mechanism.
Refuses to risk GD's funds by giving cost estimate for unusual telescope, especially if R.S.L. expects GD to pay for any expenses over estimate. Regretfully stops manufacture of telescope.