Thursday, July 25, 2019

Night On Fan Mountain

Me on the Mountain!
(From 29 April 2019)

Here are a few photos from our visit to Fan Mountain Observatory on Friday night. Kevin and I drove out for the Observatory's public night and had a great time seeing this UVA facility (just south of Charlottesville) and its three telescopes; the weather wasn't ideal for stargazing (overcast and, um, somewhat breezy) so we enjoyed the demonstrations put on by the University students in attendance and talking to astronomers like Professor Ed Murphy who gave us a private tour of the Rapid Response Robotic Telescope and its control systems (run by SKYNET, oh my!).

The 40" Reflector
A great evening on the Mountain. Funny, I've lived in Virginia for most of my 56 years and never heard of this place. If you get the chance, check it out--you might even catch them on a clear night!
The dome for the Skynet Rapid Response Robotic Telescope

The RRRT in standby mode
Kevin Francis poses with Professor Ed Murphy in the RRRT dome

Inertia

(From 25 June 2019)

This is me on a Saturday morning. This is me on a Saturday morning nearly three months into the longest vacation of my life. This is me still in my robe and slippers surfing YouTube and Fb on a Saturday morning nearly three months into the longest vacation of my life. This is me still in my robe and slippers surfing YouTube and Fb on a Saturday morning nearly three months into the longest vacation of my life while the list of errands and jobs around the house that I want to get done today (Saturday) sits un-touched on the dining room table. This is me on a Saturday morning.
Screw this. I'm gonna go mow the grass.

Monday, May 13, 2019

When A Weekend Goes Wrong, Make Lemonade!

Do I have your attention now?
Today's post is a joint-effort; my dear wife Lucy joins me in describing our latest weekend expedition. Her input is in normal font and I'll be chiming-in occasionally.

************************************************************************

What do you do when a weekend of geeky fun that you've invested not only $$, but hopes of meeting favorite Dr. Who personalities, goes totally wrong?  You make the best possible lemonade!  After news came that the Dr. Who convention in Maryland that we had planned to attend was cancelled, Tom and I planned another adventure.  Combining our two favorite hobbies, we set out for the wilds of North Carolina.  

First stop, Greenville, where there is an observatory/planetarium that Tom wanted to check out.  Since we arrived to town well before sunset, and had a few hours to spend, we took a side trip to a local nature park, and discovered a jewel of Greenville.  The North River Park is a former sand mine turned garbage pit, turned into a gorgeous nature preserve.  It is 340 acres of woodland, lakes, and marsh where people enjoy the best that Nature has to offer.  People were fishing; the students from ECU were doing community service by cleaning up trash; and walks were enjoyed by canines as well as hominids.  On closer examination of the city map, we came to realize that Greenville has what many cities lack--loads of green space for its population.  The Time for Science museum/observatory sits on 400 acres of donated land!  Go Greenville in supporting Nature spaces.
************************************************************************************************
The observatory and planetarium operated by Greenville's "A Time For Science"  educational organization are located about 11 miles south of the city in the rural community of Grifton, far enough out to allow a decent view of the southern and eastern skies but close enough that it's a quick, pleasant drive from town--perfect for school field trips and family outings. As Lucy mentions, the preserve area is quite large, containing not only the planetarium and observatory but hiking trails and a small fossil pit!
Observatory Manager Brian Baker opens up the dome
The observatory is named for Kitty and Max Joyner, local amateur astronomers and philanthropists, and equipped with a 16" Meade Schmidt-Cassegrain telescope on a beautiful "Paramount" mount and drive system. Unusually for such a facility the dome is designed to rotate in unison with the movement of the telescope across the sky--most of the parts for this mechanism and control system were produced by students at ECU working with 3D printers!
The Kitty and Max Joyner Observatory and Planetarium in Grifton, NC 

Ten of us (including two children) viewed a show on space-based high energy astronomy projected on the coated interior of the planetarium's geodesic dome (when built the plan for the dome was that a portable, inflatable planetarium was to be used within, but upon consideration it was decided to use the entire interior of the geodesic structure). Following the show our host Brian Baker gave a short talk about the evening's sky, answered questions about black holes and supernovae, an then led the group out under the partly cloudy sky and to the observatory where the Orion Nebula was on view in the telescope's eyepiece.
The observatory's 16" telescope
************************************************************************************************ Following a great day/night in Greenville, we drove an hour to the next stop on our map--Aurora Fossil Museum, and its two dig pits.  The town of Aurora is tiny, on the edge of a phosphate mine, but its museum, dedicated to local fossils, is a treasure.  Our first trip there was during winter, on a cold and windy day.  This time, the sun was out, it was about 70 degrees, and the dig pits were calling!  We had come prepared with appropriate tools of every intrepid fossil hunter: scoops, sieves, baggies and buckets for treasures, hats, and raggedy jeans, and a microscope.  As time passed, more people joined us on the pit, and the kids expressed joy and entrancement by shouting "I found something!" every few minutes.  Everyone staked a small 'claim' on the pit, and the fun commenced.
With the idea of hunting for tiny fossils as well as the larger varieties I'd brought my portable microscope. The plan was to sift through the dusty debris collected by straining the pit's rubble in search of diatoms or other microscopic denizens. My results from the afternoon were mixed; I DID find some strange objects that looked organic--tiny globes of yellow-white about 50 microns in size--but I wasn't able to identify them. So I brought a baggie of the pit's "soil" home for further study!

************************************************************************************************ 

While Tom and I failed to score THE find, we found many treasures: sting ray barbs; bits of turtle and crocodile; vertebrae from a shark; various bits of bone; shells; sea urchin spines; crocodile teeth, and in case you're wondering, lots and lots of teeth, from several species of shark.  This material is anywhere from 3 to 16 million years old!!!!   So, not a bad haul for a few hours of playing in the dirt!

After about four hours in the dirt, we packed up our treasures, and headed for the next destination on the road, Bath, NC.  We took the ferry (free) across the Pamlico River, and after a stop for dinner reached our destination, in time to watch a gorgeous sunset settle over the inlet.  Bath is the first town to be incorporated in NC.  It was also the home town of a certain Mr. Teach, known as Blackbeard; and a local floating theater was the inspiration behind Edna Ferber's Showboat!  Beautiful place, but we agreed that it was just too close to Hurricane Alley for comfort.

The next morning we headed home, with a stop at another pretty town, Edenton.  Since it was Sunday, everything was closed, except the visitor's center and a local used book/tea shop.  Both were welcoming, and we made small purchases in each.  Lots of history here, and hoping that summer visitors don't ruin the charm of the place.

All in all, a wonderful weekend that was full of discovery and adventure.  Met lovely people along the way, and learned about a few who played roles in founding small towns.  Not a bad way to make up for a weekend that went so wrong.

Sunday, March 24, 2019

f-stop: The Charioteer



Constellation Auriga photographed from our backyard...not bad for living in the city!
A very nice evening in the backyard last night...just me, the StarBlast, and beautifully clear skies! Oh, and my old DSLR...here is a photo of Auriga falling toward the trees on the western side of our property. Yes, I live in the city--but with a little effort I can still see the stars.

Saturday, March 23, 2019

Tickets To Ride

THIS is the nerdish equivalent of tickets for the "Big Game"...tickets for the University of Virginia's Fan Mountain Observatory Public Night on 26 April! They only open the facility to the public on two nights each year, so I'm pretty psyched about driving out south of Charlottesville with Kevin Francis to spend an evening under the stars with the UVA astronomers and their fine telescopes.



Tuesday, March 5, 2019

Stone Temple Pilot At Plaza Azteca


"Tom and I went to dinner last night with a friend. Just the perfect backdrop for our plus one! Many thanks to the staff at Plaza Azteca in Hampton for letting us do a photo shoot! Many fans of AvP among the personnel."
                                                                                                                                Lucy Epps

Monday, March 4, 2019

Brothers From Different Mothers

Edmund Astroscan meets Orion StarBlast
In the left corner, telescopic champion for over forty years...my classic Edmund Astroscan 2001 wide-field telescope which dates from 1977. In the right corner, da' contender...my fresh-from-the-box Orion StarBlast, which boasts quite a few similarities to the vintage Astroscan--but some major differences as well. Our contest tonight is intended to decide which of these two stylish instruments is best equipped and capable of traveling the world in search of clear skies and faint fuzzies; which, in other words, will join me as  principle observing equipage on my next deployment--stargazing from both shipboard and shoreside sites. And may the best telescope win!

The rules are simple; both telescopes will be tested for image quality (including incidence of coma, a common artefact of short focal-length, wide-field optics), focus across the field of view, and ease of use. Identical eyepieces will be used to view a variety of deep-sky objects in the evening, to include M45 (the Pleiades), M42/3 (Orion's famous nebula), and the Hyades. If skies remain clear in the morning comparisons of Saturn, Jupiter and Mars will be attempted.
Well, we can easily see who's taller.
Despite very different mountings, these two telescopes are actually quite similar; the Astroscan's spherical lower body moves freely on a triangular cast aluminum base while the StarBlast moves ALT/AZ (Altitude/Azimuth, or side-to-side, up-and-down) on a quasi-Dobsonian wooden mounting. Both 'scopes us single-power (1X) finders; the Edmund offering has a cast-aluminum peep-sight while the more techie Orion instrument has a battery-powered red-dot finder (again, 1X) which works in essentially the same way as the peep-sight. Both are also quite portable; the Astroscan (at 12 lbs)has a shoulder-strap and the StarBlast (at 13 lbs) a built-in handle

Optically these two telescopes share very similar designs; the StarBlast has a 113mm (4.5") parabolic mirror as compared to the Astroscan's 106mm (4.25") primary, both with focal ratios of F/4.0. This gives the StarBlast a focal length of 450mm (18") and the Astroscan an f/l of 425mm (17"). These are very close numbers; in fact the only significant difference (on paper) between these two optical systems is that the StarBlast's primary and secondary mirror are fully collimatable--they can be adjusted for better performance. Astroscan's optics are pre-collimated, which means that the owner doesn't have the option of "tuning up" the 'scope.
The primary mirror collimation knobs on the StarBlast are visible in this photo.
Will this make a major difference tonight when I focus both telescopes on the Pleiades and alternate views through their identical eyepieces? I don't know. I have my suspicions and a few expectations,
but I'll keep those quiet until I file my report on tonight's comparisons.

Clear Skies, Folks!