Terry Danks Photography: Birds, Scenery, a little astrophotography too. http://danks.netfirms.com/home.htm Equipment List: Too embarrassed to list it all. Roll-off-roof Observatory Constructed Fall, 2013
DreamCatcher Dobservatory/AstroTech 16" dob.
Meade LX200 10" f/6.3 Classic
Celestron Nexstar 8SE
Celestron 90mm Mak
Meade 90mm f/8.8 Refractor
Celestron CR-150-HD6 ,6" f/8 Refractor
TASCO 60MM X 900 MM Refractor (My first scope that my wife gave to me for Christmas in '91 , still have it.
Celestron CG5 Advanced Mount
Celestron Bino Viewer
Orange Zone 10'X12' Roll Off Roof Observatory Southeast, South Dakota
Pete Peterson Peterson Engineering Corp. http://www.petersonengineering.com/sky Wishing Star Observatory http://www.peterson-web.com/wish
Quote:Terry,One thing about white,or any bright color.If the Obs is within the constant view of the house,and the sun is ever behind or above it,you will be shading your eyes quite often.Just a thought.
Celestron 11" Edge HD CPC, 11" NexStar GPS, 8SE; Meade AR6, AR5; SkyWatcher ED100, Astro-Tech AT80LE, Orion ST-80 CGEM w/SBS rig, Celestron NightScape, NexGuide; Modded Canon 450D, Nikon D90, StarShoot AG, & HD webcam Denk PowerxSwitch S2, TV 3.7, 8, 13, 17, 21 mm Ethos, Astro Tech 40 mm. www.orionranchobservatory.com
12.5" Home built F-4.8 Eq Newt. Lightholder Optics mirror 12'x12' roll-off roof observatory 6" Home built f-6 Newt. w/Dick Wessling mirror on CG-5 Eq. mount. 4.5" Orion Starblast My equipment philosophy... If it ain't broke, fix it anyway.
Quote:The obvious reason for white is to minimize radiant solar heating. Even though a roll-off roof cools the building more quickly than a dome when opened, the telescope will take longer to reach ambient temperature if it starts off warmer than it could be. I'm in RI (41°N) and the interior of my white structure stays pretty close to ambient even when closed on a hot summer day. So there's a slight trade-off between function and aesthetics.Clear skies,Pete PetersonWishing Star Observatory I15
Calypte Anza, California
Adam AP Mach 1, Rob Miller TRI36L, Celestron 8" Edge HD Hyperion 17mm, Celestron 40mm Plossl, TMB 7mm & 9mm WO 66, Lunt LS60/B1200 PT, CG-5 Clone STF-8300m Pro Package, Honis-Modified Canon XS, Un-modded T1i, SSAG, TSOAG9, SX LodestarLackawanna Astronomical SocietyMy Astrobin
Quote:the standard galvanized metal roofing sheets (silver-colored) are usually coated with a thin layer of oil that needs to be washed off well if you decided to paint over it. Otherwise you will be re-painting the roof every 3 years or so because the paint was not able to bond solidly with the metal.I am told the best way to get it off is to have it professionally spray-washed. Any others have experience with this?
Refractors Reflectors Two Cats A few eyepieces
Quote:Almost 20 years ago I built a 10x12 ROR using plans from a British astro book. It recommended using translucent fiberglass panel for the roof so light would come in.
Quote:Quote:Almost 20 years ago I built a 10x12 ROR using plans from a British astro book. It recommended using translucent fiberglass panel for the roof so light would come in. This is what the guy building my shed suggested! For the exact reason you describe, I thought it a bad idea. I've decided on an off white.
Quote:Quote:Quote:Almost 20 years ago I built a 10x12 ROR using plans from a British astro book. It recommended using translucent fiberglass panel for the roof so light would come in. This is what the guy building my shed suggested! For the exact reason you describe, I thought it a bad idea. I've decided on an off white. Very bad idea! I had those on my back porch enclosure, and talk about heat buidup! Wow! I've now got metal roofing on it.
Bruce Vixen Visac VC200L AT65EDQ CGEM DX - hypertuned by Deep Space Products Atik 460EX mono w/EFW2 Astrodon Gen2 LRGB Astrodon 3nm Ha,OIII & SII Canon 500D (Gary Honis modified) Point Grey Chameleon (mono) Orion SSAG Ibuprofen Meadowlark Ridge Observatory http://www.flickr.com/photos/o...s/72157628590128971/
Bored? Peruse my website: http://www.samirkharusi.net/
Quote: I also suspect that fairly good sealing will be required to keep mice and squirrels from chewing the wiring of that AP1600 you are getting...
AL MasterObserverC #24
John in NW Arkansas
Quote:My roll off roof is bright galvanized steel. No heat problems, stays near or below ambient.
Observing the Sun with complex optical systems since 1966, and still haven't burned, melted or damaged anything. Not blind yet, either!
HyperTuned CGEM and G11wG2 SV115T20, Meade SN-8, AT-66, and modified 20d. Nebulosity, SkyTools3, TSX, and Pixinsight.
Quote: Science says to go with a TiO2 pigment white paint.
Quote:Quote: Science says to go with a TiO2 pigment white paint. Any idea why the big boys buck the science and have big shiny domes?
Scopes - 10" Meade LX200, Coronado 90mm, Vixen ED103, Orion 80mm Guide Mount - AP1600GTO Std (Encoders.... someday) Cameras - Atik 320E, Atik 314L+, Atik Titan, Mallincam Xtreme X2, Skyris 274M, Orion StarShooter, Canon 7D Instruments - L200 Spectrometer (300,600,1200 gratings), SA100 Diffraction Filters - LRGB,OIII,SII,Ha; J/C UV,B,V,Ic,Rc Way too many computers....