Computer Science
Scientific paper
Jun 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989msngr..56...65j&link_type=abstract
The Messenger, vol. 56, p. 65-65
Computer Science
1
Scientific paper
A new dioptric camera was installed on the Boller and Chivens spectrograph at the ESO 1.52 m telescope in February 1989 to replace the old Schmidt camera. This allowed the removal of a focal reducing lens in front of the spectrograph slit designed to match the fl15 beam of the telescope to the fl8 focal ratio input of the spectrograph. The focal length of the new camera is 127.0 mm compared with 143.5 mm for the old camera. This means that the effective dispersions of all gratings as found in the recently published Boller and Chivens manual must be multiplied by 1 .I 3 (= 143.511 27) when used at the 1.52 m telescope. The new slit scale is 9.2 arcsec mm^-1 (compared to 19.4 arcsec mm^-1 before) and the detector scale along the slit is 0.68 arcsec pixel^-1 (with 15 micron-meter pixels, compared to 1.28 arcsec pixel^-1 before). Note also that the new TV slit-viewing field is now reduced by a factor of 2 giving a new field of about 1.5' x 1 .ĺ. The Nyquist sampling criterion is satisfied with a slit-width of 1.5 arcsecs (15 ym pixels and a small grating angle). For larger grating angles (say 10" or more), the grating demagnification must be considered (see Users' Manual).
Hutsemékers Damien
Jarvis Brian
No associations
LandOfFree
A new and improved camera for the 1.5m B&C spectrograph does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with A new and improved camera for the 1.5m B&C spectrograph, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A new and improved camera for the 1.5m B&C spectrograph will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1856118