Technical data
|
Optics |
Takahashi FS152 apo
refractor
|
Focal
Length |
1216 mm (direct focus, no flattener)
|
Focal
Ratio |
f/8
|
Exposure
Time |
3 h 20 min (20x10 min)
|
CCD |
Canon
EOS 5D with Baader filter
|
Sensitivity |
800 ISO
|
Location |
Tivoli Farm
(Namibia) at 1350 m height
|
Date
|
27 August 2011
|
Mount |
Fornax 51
|
Tracking |
SXV-H5 on a Vixen 80/640 apo refractor
|
Temperature
and
humidity |
T= +9°C, RH=32%
|
Sky brightness at
zenith (with SQM-L) |
21.6 mag/arcsec^2
|
Notes |
This
image is a collaborative effort of the Namibia 2011 expedition.
Processing: Lorenzo Comolli. Images by: Lorenzo Comolli, Luigi Fontana,
Giosuè Ghioldi, Emmanuele Sordini.
|