499 
new Nebula and Clujlers of Stars. 
21 Velpeculae 
39 ( h ) c ys ni 
2 ' 6 " 
8 6 
i° Si' 
35 
which, if there be no error in the place of the fiars in Flamsteed’s Catalogue, 
differ about 14' in polar diftance, for which reafon in the fecond Paper on the 
Conftruction of the Heavens this nebula was put down twice, whereas it now 
appears, that both obfervations belong to the fame. 
Y. 1. This nebula was difeovered Sept. 23, 1783, by my filler Caroline 
Herschel, with an excellent fmall Newtonian Sweeper oi 27 inches focal length, 
and a power of 30. I have therefore marked it with the initial letters, C. H. of 
her name. See alfo V. 19. difeovered Aug. 27, 17 83, and VII. 13. difeovered Feb. 
26,. 1783. 
V. The Front-view is a method of ufing the reflecting telefcope different from 
the Newtonian, Gregorian, and Caflagrain forms. It confifts in looking with the 
eye gtafs, placed a little out of the axis, dire&ly in at the front, without the 
interpofition of a fmall fpeculum ; and has the capital advantage of giving us 
almoft double the light of the former confirmations. In the year 1776 I tried 
it for the flrfi time with a IO feet reflector, and in 1784 again with a 20 feet 
one ; but the fuccefs not immediately anfwering my expectations, it was too 
hafiily laid afide. By a more careful repetition of the fame experiment I find 
now, that feveral other confiderable advantages, added to the brilliant light before 
mentioned, make it fo valuable a conftruCtion that a judicious obferver may avail 
himfelf of it at leafi in all cafes where light is more particularly wanted ; and 
from the experience of 30 fweeps, which I have already made with it, I may 
venture to announce it to be a very convenient and pleafant, as well as ufeful, 
way of obferving. With regard to the pofition of objects, it differs from other 
confiruCtions, by inverting the north and fouth, but not the preceding and 
following. 
Errata of the Catalogue . 
The following nebulae fliould fiand thus. 
I. 54 . 
35 („.) Andr. 
f 
18 36 
f 
1 26 
I 
pB. S. R. vgbM. 
II. 1 . 
41 Aquarii 
P 
11 45 
n 
O 17 
2 
F. cL. mE. bM. er« 
II. 239 . 
In the description read 
The 2 1 of two* 
■swnfib 
Vol. LXXVI. 
T t t 
