Tag: transit circle

Letter by H A Lenehan, 28 November 1887

November 28, 2008

Observatory November 28th 1887 Dear Mr. Tebbutt I forward a list of the times you recorded on the cylinder chronograph with the observing text – the clock error will have to be applied In reducing the stars you observed you will have to treat the collination as 0”0 and not take account of the diurnal aberration of the clock stars: the necessary allowance having been made in the R.

Letter by H C Russell, 19 November 1875

November 19, 2008

788 19 Nov 5 My dear Mr Simms I hope by the time this reaches you the Transit Circle will be finished and packed for shipment. My need for it is now greater than ever indeed work for our Trigonometrical Survey is waiting until we get it.

Letter by H C Russell, 2 November 1870

November 2, 2008

178 Sydney Observatory 2 November 1870 My dear Adams I shall be glad to meet you at Bars?? but I cannot say the day for My Transit has been delayed at Tornaghi’s to get Cary done I was there yesterday and it was not finished nor do I think it will be for two or three days yet, the Packing is arranged and he has the Bases and cork chip I have also both Boxes ready for the Standard Bar as soon as Tornaghi can come to pack it.

Letter by H C Russell, 30 October 1875

October 30, 2008

30 October 5 My dear Sir I acknowledge with many thanks your valuable letter of August 18th. It will I have no doubt induce the people here to take still more interest in astronomy, and it shall not be for want of effort on my part if we do not do our best future, especially with regard to the particular objects you mention.

Letter by H C Russell, 28 October 1875

October 28, 2008

780 Observatory 28th October 1875 Sir Owing to the great increase in price of all astronomical Instruments the sum of £700 which I was authorized to spend on a New Transit Instrument was only enough for the Instrument without microscope.

Letter by H C Russell, 10 October 1870

October 10, 2008

152 October 10 0 My dear Adams I have hurriedly constructed a Hemisphere of the principal southern stars something like the plan. I some time since intended to publish this one is not sufficiently accurate for that purpose but I think it will enable you to pick out the different stars.