Heidelberg, Universitätsbibliothek Heidelberg, Heid. Hs. 3695 EG 36,2 Gill, David; Royal Observatory Cape of Good Hope; Wolf, Max [Adr.]: Briefe von David Gill an Max Wolf: Brief von David Gill von Royal Observatory Cape of Good Hope an Max Wolf (Cape of Good Hope, 25.7.1906)

Coy?6 of 6rOO^ TTopo,
1906 July 25. 190 .
fUBTD

My dear Colleague,

I received your postcard of the 30th June

last with reference

to the remarkable dimming of the sky

=
which you have obser-'E*^
E***
the whole matter as IE.
— OJ
are concerned. On e:=
Astrographic Telesco;E^
E °
number of stars obta
similar conditions w
With the McClea
-ly taking spectrogrE-
-
—
line of sight, we ha=.
EJ°
same number of a.ccum-
constant actinic effE^
to gauge the sensiti=_?
Tor like density of
Professor Max Wolf, E-^
Der Sternwarte,
Heidelberg. =_r
Germany. =_


we looked into
onditions here

(5
JZ
O
o
c
o
O
o
0
og
Z
O
o
O

(U
c
(D
O)
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taken with the

ution of the

and under

ars

ve been regular

' motion in the

tuated by the

bed a fairly

Eds may be taken

we find a like

density

vary somewhat