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Description: Beginning of the dream - three pavers mark the spots where I positioned my rigs' tripod every night. The flags were the initial layout for a 12'X12'x4" pad/deck.
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Description: The "pool" in my backyard - first attempt at digging a space to hold a pad that was dug undergrade. My first attempt at a template for the pier bolts rests beyond the hole. The form is around a 24" diameter, 5 foot deep hole that was dug to hold the concrete and rebar that would be a pier footing. The footing was later found to be almost 20 degrees East of North and ~6" below grade/floor height when our slope was eventually determined with a laser.
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Description: The "backyard pool with its off-rotation, metal sculpture." This was the image - with all the detritus of the build removed - that sparked the realization that my project had serious issues. Since the entire pad was going to be poured under grade it would turn into a pool after any serious rain or snow storms - a given where I live. When I asked the contractors, they stated they planned to pour concrete in the form as-is - no rock base, below grade.
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Description: The new plan based on the updates provided by a concrete pro at work and verified by the gentleman that would do the actual concrete pour and finishing. Note addition of concrete to previously poured pier. Also note amount of rock and concrete that would be above ground level on the right (the lowest elevation for the site).
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Description: The new pier footing - elevated an additional 6" (aka 900 pounds of concrete) to bring its top level with the new floor of the updated slab. The forms were split from top-left and bottom-right and flipped and stacked on top-right corner to form a "dam wall" to create a form to hold the 8" tall mountain of base coarse needed to bring the 4" concrete slab above grade. Note pink reference stakes used to calculate the reference height for all forms and material volumes required for the project.
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Description: The base coarse in progress - 9.5 cubic yards (19,200 pounds) of rock was needed to fill in the void created by the intial excavation for the pad. The dirt that was removed was transferred by the previous contractor to another site. Three layers of base was laid then compacted to fill in the void and to raise the elevation of the pad to a level sufficient to have the concrete above grade. Note 12" tall x 2" thick foam - around the 24"x24" pier footing - to help isolate the pad from the pier. Also note 2"x12"x12' forms for the 4" of concrete that would be poured over the base coarse.
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Description: The finished base coarse core - note 6" spaces between "dam wall" and concrete forms in upper right corner. Because this corner was so far above grade (caused by slope of yard that was highest on lower left corner by pink reference stake and lowest at upper right corner). the void was filled with concrete poured for slab and reinforced with wire mesh. Gaps around the forms will be filled in with rock and topsoil to protect the base and slab.
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Description: The slab after concrete was poured, finished and broomed. Two and a quarter yards of 4,000 psi concrete was required to complete the pad, including the 6" wide spaces around the northeasern corner's "dam wall" core. The crooked wood on the pier bolts was to provide a support to hold plastic sheeting from contacting the concrete due to an overnight sprinkle that was forecasted. A week later the pad was ready for the NexDome.
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Description: Test fit of AP rig on pier to verify height above the slab - NexDome has a 53" wall height at bottom of shutter slit - to ensure OTA could see through the slit. After the dome was placed on the slab I discovered that my bolts were 7.5 degrees east of North - we had to shear off and replce the bolts with 1/2"X12" Wedge Anchors that were correctly oiriented to North. My iPhone compass app was the culprit for the initial bad bolt placement. The wedge anchors were a PITA to get into the pier but once in were verified on the first Polar Alignment to be perfectly centered North.
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Description: Transport of the NexDome. Eight people used 12' 2X4's to lift the assembled base. Once on the trailer the dome was placed on top and then secured. One of the folks helping came up with idea to use two tiedowns to form a halo that was placed over the dome and used to anchor the base and dome down to the trailer. We drove 40mph for 15 miles to transport it all to its new home.
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Description: NexDome finally safe and sound at new home.
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Description: First light run from new obsy.
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Description: Interior of obsy during first light capture of Y-Cas Nebula. The total RMS from the new pier with this setup averaged an outstanding 0.18 sec for almost two hours before weather rolled in. The best total RMS I could get on my iOptron tri-pier was ~0.6-0.8 sec.
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Description: Eighty-eight two-minute Luminance subs shot in G2G Observatory. The Luminance image was processed in PI and cropped in PS. So many things still needed to bring the new obsy into working order: levelling, rounding, sealing, protecting the edges of the slab with new dirt fill, etc. Seeing improvement in the quality of the images spurs me on. CS & GB!
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Distinct awarded users | Total awarded images | |
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Image of the day | ||
Top picks | ||
Top pick nominations |
Image of the day | Top pick | Top pick nominations | Total submitted | |
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Deep sky | ||||
Solar system | ||||
Extremely wide field | ||||
Star trails | ||||
Northern lights | ||||
Noctilucent clouds | ||||
Landscape |
Image of the day | Top pick | Top pick nominations | Total submitted | |
---|---|---|---|---|
Backyard | ||||
Traveller | ||||
Own remote observatory | ||||
Amateur hosting facility | ||||
Public amaeteur data | ||||
Professional, scientific grade data | ||||
Mix of multiple sources | ||||
Other | ||||
Unknown |
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Status | Advanced success |
Started | ... |
Astrometry.net job | 8776905 |
PixInsight job | NDAP177F63GRNL5V82V4HRQGA7NLJA1D |
PixInsight queue size | n/a |
PixInsight stage | TASK_LOG |
RA (center) | 00h58m49s.83 |
RA (top/left) | 00h52m50s.54 |
RA (top/right) | 01h03m29s.73 |
RA (bottom/right) | 01h04m57s.69 |
RA (bottom/left) | 00h54m00s.27 |
Dec (center) | +61°01′57″.9 |
Dec (top/left) | +60°42′23″.8 |
Dec (top/right) | +60°28′16″.9 |
Dec (bottom/right) | +61°20′28″.5 |
Dec (bottom/left) | +61°35′00″.1 |
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