Home Observatory: Background

After 11 years of visual astronomy, traveling to darker skies and hoping for good weather were yielding too few actual nights under the stars. It was time to build a home observatory: The Robservatory was born.

By far, the biggest challenge for amateur and professional astronomers worldwide is the rapid and relentless disappearance of dark skies as a result of light pollution. To counter this effect, the imaging of certain objects which transmit light at special frequencies (typically emission nebula, planetery nebula, and some galaxies) can be done through narrowband filters, which transmit light only at these very specific, narrow wavelengths, while blocking broaderband light from sources such as streetlights, house lights, and even the moon.

All images on this site have been captured at The Robservatory, located 12 miles west of Manhattan, under some of the worst light pollution on the planet.

Saturday, December 27, 2008

IC410 in Auriga (click to enlarge)




Emission nebula IC 410 lies about 12,000 light-years away in the constellation Auriga. The cloud of glowing hydrogen gas is over 100 light-years across, sculpted by stellar winds and radiation from embedded open star cluster NGC 1893. Formed in the interstellar cloud a mere 4 million years ago, bright cluster stars are seen just below the prominent dark dust cloud near picture center. Notable near the 7 o'clock position are two relatively dense streamers of material trailing away from the nebula's central regions. Potential sites of ongoing star formation, these cosmic tadpole shapes are about 10 light-years long. (Text source: apod.nasa.gov/apod)


Sunday, October 12, 2008

The Veil Nebula (Click to enlarge)












The Veil Nebula is the remnant of a supernova explosion that occurred about 5 - 10,000 years ago.
It is located 1,400 light years away in the constellation of Cygnus. (Text source: apod.nasa.gov/apod)

Wednesday, October 1, 2008

M27: The "Dumbell Nebula" (click to enlarge)


Known by the popular name of the Dumbbell Nebula, the beautifully symmetric interstellar gas cloud is over 2.5 light-years across and about 1,200 light-years away in the constellation Vulpecula. The hydrogen emission is seen as rust-red (H-alpha) and ionized oxygen shows up in fainter bluish hues. (Text source: apod.nasa.gov/apod)

Saturday, April 19, 2008

Completed Facility


Here's a front view of The Robservatory, which rests on an elevated, octagonal deck, facing south.

Slide-Off Dome Capability







The initial configuration was for a rotating dome. However, it soon became apparent that no matter the dome position, the sky directly overhead was obstructed. In order to overcome this limitation, a rear platform was constucted. When the dome is opened, it can now be slid completely off, gliding with little effort along three tracks made of synthetic decking material. The sky overhead is now competely accessible.

Inside The Robservatory



Imaging is done with an ATK 314L+ cooled CCD camera (upgraded from 16HR shown) on a TMB92 f5.5 triplet-apo refractor with a Televue .8x focal reducer/flattener.

The guidescope is a Televue Pronto, with guiding via a StellaCam3 video camera.

A dual screen laptop is used for image capture and guiding.

The mount is a Losmandy G11 (upgraded from GM8 in photo).




Octogonal Deck


Here is a shot of the framing for the octagonal deck on which The Robservatory resides.

Pier Construction

My brother Richard helped me pour almost a ton of concrete to create a super-stable pier on which to place the telescope mount. The pier was completed on April 19, 2008. Thanks, Rich!