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... SCORPIO is a multi-mode focal reducer of the BTA. It it used for observations of star-like and extended objects in following observational modes at the prime focus (F/4) of the 6m telescope: . ... Long-slit spectroscopy . ... The device consists of the Focal Reducer (F/2.6) and of the prime focus Adapter (with tip-tilt auto-guiding system and lamps for flat-field and wavelength calibrations). ... SCORPIO design: . The optical part contains of the collimator (F/2.2) and the camera (F/1.8). ...

... SCORPIO is a multi-mode focal reducer of the BTA. It it used for observations of star-like and extended objects in following observational modes at the prime focus (F/4) of the 6m telescope: . ... Long-slit spectroscopy . ... The device consists of the Focal Reducer (F/2.6) and of the prime focus Adapter (with tip-tilt auto-guiding system and lamps for flat-field and wavelength calibrations). ... SCORPIO design: . The optical part contains of the collimator (F/2.2) and the camera (F/1.8). ...

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Not on-site at APO, but can be obtained on loan--contact Jeff Morgan at UWash, morgan/astro.washington.edu . CENTER( ) PASSBAND( ) NEBULAR LINE (OR CONTINUUM) . 4861 60 Hbeta 5007 60 [O III] 6301 10 [O I] -- [S III]6312A line is supressed 6563 10 Halpha -- [N II]6584 and 6583 lines are suppressed 6583 10 [N II] -- Halpha line is suppressed 6728 80 [S II]6717+6731 4686 60 He II 4760 100 blue cont or Fe II 8290 195 red cont. See also the Hodge filter set below. ... APO Filters Homepage ...

... To date, a total of 1043 photometric observations have been collected with FIRPO. The statistics include 256, 279, 412 and 78 measurements in the main filters J1, H2, K3 and L4 respectively. ... A full listing of the measurements, ordered by date and with the filters and program name indicated, is available. Also available is a summary of the FIRPO runs, with details of the dates, telescopes and observers. ... The date are in the fmag.dat files. ... A message with more details has been posted. ...

. Next: The Hierarchical Stellar Systems Up: Data files Previous: Spectroscopy Contents . Photometry data files have the extension .mag . The following gives an example for Algol, where the columns are the component designation, filter name, the Julian date of observation, and value and error of the magnitude measured. The filter names must be one of Hp, U, B, V, R, and I. ABC V 2445249.299 -2.60900 0.001 ABC V 2445249.304 -2.60000 0.001 ABC V 2445249.313 -2.59200 0.001 . Christian Hummel 2015-04-28

... Archives . ... Please, do not confuse adaptive filter (hereafter, AF ) with adaptive optics (hereafter, AO ). ... Not just the hardware part, but I was interested in how astronomers have applied theories and algorithms of AF to acquire cleaner data that are processed with speed and efficiency. ... A long story short, against my expectation for frequent allusion from ADS, adaptive filter turned out to be almost [MADS]. ... Tags: adaptive filter , adaptive optics , MADS . ... Comment ( RSS ) | ...

Astronomy Discussion Forums . ... Observation Report On Mars And .. ... Post Message | ... Despite the bad conditions we had yesterday, we couldn?t resist the Mars? ?attraction? and here it is the report. ... We disassembled the LPR filter to preserve its colour balance and we prepared a set of Ultima series eyepieces and filters. ... www.astronomy.net . ... Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

... It contains 2 (1 for each polarization) by 4 separate filters that are switch able via the computer. filter 1 is a motor driven tuneable filter covering 1000 to 2000 Mhz with a 2% bandwidth. filter 2 is a ??? . ... An hp34907 dac generates a voltage that corresponds to the requested frequency. ... It steps the filter from 1000 to 2000 Mhz in 25 Mhz steps. ... You now have 41 requested voltages and measured frequencies going from 1000 to 2000 Mhz. ... 20 Mhz) when fit over the 1000 to 2000 Mhz range....

A computer controlled low light photometer for nightglow observations. Hardware units of portable photometer for low light measurements, especially night glow emission is described. ... Interface card contain th