... Home Observing Carl Schurz Park . ... Beyond New York City . ... The€а Amateur Astronomers Association of New York€а hosts€а observing sessions,€аfree and open to the public , one€а Friday night€а each month from€а April through October€а at€а Carl Schurz Park €аin Manhattan.€а Carl Schurz Park €аis located along East End Avenue€аat the end of East 86th Street.€аThe park has a lovely view of a lot of sky above the East River, Roosevelt Island, Queens, and the Queensborough and Triborough bridges. ...
... Conical baffle adjustment . ... The conical baffle has three translational and two rotational degrees of freedom that can be controlled by adjusting the length of 8 wires using turnbuckles. In addition, the natural frequency of the torsional vibration mode of the baffle about its axis is determined by the tension in the wires. ... Adjust the release force of the conical baffle support wire anchors. ... Figure 1: One of eight conical baffle support wire anchors. ... Conical baffle front tip . ...
... I will touch upon the following points: fast evolution of the sizes of quiescent (elliptical) galaxies between z = 2 and z = 1; prolonged star formation histories of dwarf spheroidal galaxies in the Local Group; apparent lack of external sources of cold gas accretion for the nearby spiral galaxies; old stellar ages and magnesium overabundance of the large-scale disks of nearby lenticular galaxies. ... This discovery has challenged the recognized scenarios of elliptical galaxy evolution. ...
... The instrument uses a high-speed optical system to form an image on the entrance slit of a matching stigmatic spectrograph, which then disperses a spectrum of a strip of the sky onto a charge-coupled device (CCD). ... Fast camera lenses, narrowband Ha пlters, and charge-coupled device (CCD) detectors combine to give an image пeld of several degrees with 0Ў resolution and a .1 sensitivity to 1 R or less (Gaustad et al. ... The spectrum and the sky are imaged on the CCD detector. ...
... 337, 275292 (2002) The correlation of line strength with luminosity and redshift from composite quasi-stellar object spectra S. M. Croom,1 K. Rhook,1 E. A. Corbett,1 B. J. Boyle,1 H. Netzer,2 N. S. Loaring,3 L ... We measure highly significant Baldwin effects for most broad emission lines (C IV 1549, C III] 1909, Mg II 2798, H ,H ) and show that they are predominantly caused by correlations with luminosity, not redshift. ... The correlations of log W with log(1 + z ) for each line. ...