The Sandiford 2.1-m Cassegrain echelle spectrograph for McDonald Observatory - Optical and mechanical design and performance

Details The Sandiford 2.1-m Cassegrain echelle spectrograph for McDonald Observatory - Optical and mechanical design and performance The Sandiford 2.1-m Cassegrain echelle spectrograph for McDonald Observatory - Optical and mechanical design and performance

Aug 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993pasp..105..881m&link_type=abstract

Astronomical Society of the Pacific, Publications (ISSN 0004-6280), vol. 105, no. 690, p. 881-893.

Physics

Optics

129

Astronomical Observatories, Cassegrain Optics, Design Analysis, Echelette Gratings, Absorption Spectra, Calibrating, Charge Coupled Devices, Collimators, Late Stars, Spectral Line Width, Telescopes

Scientific paper

We describe the design, construction, and performance of an efficient new flexure-compensated Cassegrain echelle spectrograph for the 2.1-m Struve reflector at McDonald Observatory. The instrument has a resolving power of 60,000 for two CCD pixels (for a reciprocal velocity dispersion of 2.5 km/s per pixel) and provides continuous wavelength coverage for less than 8000 A using a thinned backside-illuminated Reticon 1200 x 400 CCD detector. The mechanical design of the Cassegrain-mounted spectrograph incorporates a unique cantilevered counterweight system designed to drastically reduce the effects of gravitational flexure. In spite of the large physical size of the Cassegrain instrument, worst-case flexure shifts over 60 (4 hr) of telescope motion are less than 1/2 pixel and are typically on the order of 0.2 pixels or less from all sources.

Affiliated with

Also associated with

No associations

Rating

The Sandiford 2.1-m Cassegrain echelle spectrograph for McDonald Observatory - Optical and mechanical design and performance 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 The Sandiford 2.1-m Cassegrain echelle spectrograph for McDonald Observatory - Optical and mechanical design and performance, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Sandiford 2.1-m Cassegrain echelle spectrograph for McDonald Observatory - Optical and mechanical design and performance will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1494439