Telescopes and instrumentations
In 1942 Asiago plateau was chosen as the mountain branch of the Padua Observatory and was fitted with a large telescope named Galileo. At the time this was the largest European telescope, having a primary mirror with a diameter of 122 centimetres. Consequently, two Schmidt telescopes were constructed close to the first dome. Finally, the Copernico telescope, having a diameter of 182 centimetres, was built at Cima Ekar, a peak just outside of Asiago.
In evidenza:
Asiago winter school - 27/02 - 07/03 2013 "Very High Time and Space Resolution Astrophysics"
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Appendix C
Atlas of comparison spectra
C Introduction
This Appendix presents the atlas of comparison spectra useful for wavelength calibration
of the AFOSC spectra and the tables with the recommended exposure times The atlas is
made using the mechanical mounting of the previous detector The lines of comparision
spectra are shifted
pixels for the actual mounting Exposure times are calculated to
obtain
counts for the brightest line in the spectrum except when indicated
They have to be considered indicative since they are subjected to intrinsic intensity vari
ations lamp substutitions dierent positionig of the lamps in their holders etc
As described in Sect a single lamp spectrum usually does not allow a good
calibration due to the incomplete wavelength coverage and or insucient number of lines
For this reason we present the atlases of single lamp as well as coadded spectra of two
lamps All the spectra shown in this Appendix were taken with the arcsec slit This
made easier the evaluation of possible blends when calibrating spectra taken with a wider
slit
The spectral range might show some changes since shifts up to
pixels could be
present between spectra taken with dierent slits Run to run dierence of spectra taken
with the same slit are instead much smaller typically within
