Technical Data
|
Optics |
Takahashi FS152 apo
refractor
|
Focal Lenght |
1216 mm (direct focus, no flattener)
|
Focal Ratio |
f/8
|
Exposure Time |
For each image, respectively: 1h30min, 40min, 1h20min, 1h30min, 1h00min, 20min (single
exp of 10 min)
|
CCD |
Canon EOS 5D
with Baader filter
|
Sensitivity |
800 ISO
|
Location |
Tivoli Farm (Namibia) at 1350 m height
|
Date
|
23 August - 2 September 2011
|
Mount |
Fornax 51
|
Tracking |
SXV-H5 on a Vixen 80/640 apo refractor
|
Temperature
and humidity |
T= from 0 to 20 °C,
RH= from 20 to 50%
|
Sky brightness at zenith (with SQM-L) |
21.8-22.2 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.
M13 was imaged by Giosuè Ghioldi with the same telescope and camera from the Northern hemisphere.
|