Quote:Forgive my ignorance but I'm curious, why the cage around the camera?
Enjoy the sky,
Quote:I'm thrilled for you! What a fantastic build; and by yourself!! I really love it, and your photos are outstanding! Congratulations!!One question; are you going to have a trapdoor that you can close over the area you enter; or put a railing around it? Knowing me; my first night, I'd step into the "hole"!
Quote: The hole on the floor is actually going to get quite a bit larger to allow for the stairs coming up from the floor below. It will have a bannister/handrail all around it, a gate at the top and then trapdoors inside the bannister to lower down over the hole and keep the heat downstairs.
Quote:Here's one more from last night. Now to stack and process the actual DSO frames!
Scopes: 12.5" Dob w/Lightholder mirror, Astro Tech AT8RC, TPO 8" Imaging Newt, Intes MK-67 Deluxe, Tak FS-60CB, Tasco 10TE, Coronado PST
Remember, if the women don't find you handsome, they should at least find you handy.
I don't know how old I was when I was one.
Meade 16" f/4.5 Lightbridge M42 w/Paracorr & "Crossbow" EQT-200 Equatorial Platform
Meade AR-6 w/10:1 Dual Speed Crayford Focuser
Meade ETX-125 Terabeam/Wegat
Orion ST80 w/single speed Crayford Focuser
CGEM Hypertuned by Deep Space Products
Quote:Looking great! How did you get that high view shot?
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....
Quote:..... This will then be sanded and rubbed with raw linseed oil, as will the stairs and handrails....
Quote:Quote:..... This will then be sanded and rubbed with raw linseed oil, as will the stairs and handrails.... Raw linseed oil won't polymerize (harden).It will get on your hands whenever you touch the oiled wood.You want to use boiled linseed oil, which will harden.Properly dispose of oiling cloths, as they can spontaneously combust.If it's the look of oiled wood that you like, you might want to consider this formulation:1/3 Boiled linseed oil1/3 Spar varnish or polyurethane1/3 Solvent such as real turpentine or paint thinnerGoogle for precise instructions for applying, but you basically slop it on, wait, and then wipe off the excess. You can build up coats until you're satisfied with the finish.It dries faster and works better than plain boiled linseed oildan k.
Quote:Interesting that your insulation does not have paper backing. Maybe that's just something they do down there. I would hope you will eventually panel that area to keep the fiberglass particulates contained. That's fairly nasty stuff and over an extended period of time and exposure could lead to silicosis.
Quote:Great work on your observatory build. I know few people that could do something like that. A couple of questions if you don't mind. 1. Do you plan to insulate the dome? 2. How was the pier extension coupled to the original pier? Did you drill holes and epoxy rebar into it? Thanks. Great work.
Quote:... Boiled linseed oil is actually what I have, not raw, so that's great. It's been sitting in my shed for over 10 years. I'm not even sure how it got there. Baz.
Quote:Quote:... Boiled linseed oil is actually what I have, not raw, so that's great. It's been sitting in my shed for over 10 years. I'm not even sure how it got there. Baz. There's a good chance it's turned to jelly in 10 years, Baz. <g>Whatever oiled finish you use, dispose of the cloths in a safe manner. Toss them in a pail of water overnight, unfold and air dry them. They're safe to throw away at that point.That's some nice looking cypress that you have. Have fun.dan k.
8" GSO RC with CSL Moonlite FocuserTelevue TV60isLosmandy G11 with Gemini 2 (with Ovision upgrade)
SBIG STT-8300m with Self Guiding filter wheel
A wide assortment of lenses for my Canon.
Quote:This observatory does get better and better every time I look at it. I would have to disagree about the way you mounted the AC exhaust though. I have one of those portable units (looks suspiciously like the on you have and they require minimal obstruction to the airflow to work correctly. The manual gives so many warnings about how much kink you can have in the exhaust pipe before the Aircon looses cooling effectiveness. Try and get hold of one of those clothes driers exhaust covers that automatically open when there is airflow from the AFC unit. When you switch off the AC, the flaps fall to the closed position. That way, the air flows out more freely.