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West Optical Observatory

WEATHER UPDATE: 11:30 PM EDT 14 APRIL 2014. Rain is coming down and expected through morning, with potential for thunderstorms. We regret that these conditions mean we won't be opening for the eclipse. We thank you for stopping by and hope for clear skies for the next celestial event.

WEATHER NOTICE: Skies over PARI are cloudy and the prediction is for the overcast conditions to continue through the night, with rain and potential thunderstorms.  We will continue to monitor the sky conditions and post here around midnight tonight the possibility of opening up the telescope to view the lunar eclipse.

Watch the April 15, 2014 Lunar Eclipse Here Live.  The lunar eclipse begins at 12:54 am EDT, enters entirely in the umbra at 3:07 am EDT and the eclipse ends at 6:38 am EDT.  Images of the eclipse will be updated every 5 minutes.

Current Sky Condition

0.40-m Telescope + Apogee Camera


Recent image taken with an Apogee Alta E42 2048x2048 CCD camera through the 0.4-m telescope.

The telescope is a 0.4-m f/8 RC, scale = 64.5 arcsec/mm.

The camera is an Apogee Alta E42 2048x2048 CCD.  The CCD chip has 13.5 micron x 13.5 micron pixels and imaging area of 27.6 mm x 27.6 mm.  With this imaging area and the scale of the telescope, the angular field of view is 29.7 arcmin x 297.7 arcmin.  The telescope scale on the chip is 0.870 arcsec/pixel.  There is no telecompressor.

Filter set = Bessell UBVRI and a clear filter.

A 25 second exposures at V on a 9th magnitude star will saturate the image.


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