mental4astro
31-10-2012, 11:46 AM
Hi all,
As happens, stuff accumulates with this hobby. I've got aluminium tubing, a low profile 2" focuser, loads of 12mm ply, aluminium sheet, nuts and bolt galore, rdf's and blocks, rip-stop material, Teflon and laminate, and now a 114 f/4.4 mirror in a neat collimateable cell.
So, what to do with all of this? :shrug:
I know, make another scope! :D :screwy: :screwy: :screwy:
Over the years I've looked over so many solutions other folks have come up with for scopes that are compact as all buggery. So I thought I'd join the ranks of the "suitcase scope brigade"
I've come up with a light path solution for this project to maximise the contrast and light getting through by using the smallest secondary mirror I can get away with. But I'm missing one thing, a 1" secondary mirror, :sadeyes:
Anyone have a 1" secondary mirror they no longer need?
While it will be a travel scope, it won't be a whimpy thing. I'm looking to design it so I can attach it to an eq mount, and take the load of a small camera hanging off the focuser.
My idea at the moment is to use four 25mm poles, a detachable focuser mount, and detachable secondary mirror. This way I minimise the vertical height of the disassembled OTA. The way the project design is going, the tallest member will be the focuser. Depending on how the design evolves, the secondary may end up fixed to the spider.
Let's see what happens.
Mental.
As happens, stuff accumulates with this hobby. I've got aluminium tubing, a low profile 2" focuser, loads of 12mm ply, aluminium sheet, nuts and bolt galore, rdf's and blocks, rip-stop material, Teflon and laminate, and now a 114 f/4.4 mirror in a neat collimateable cell.
So, what to do with all of this? :shrug:
I know, make another scope! :D :screwy: :screwy: :screwy:
Over the years I've looked over so many solutions other folks have come up with for scopes that are compact as all buggery. So I thought I'd join the ranks of the "suitcase scope brigade"
I've come up with a light path solution for this project to maximise the contrast and light getting through by using the smallest secondary mirror I can get away with. But I'm missing one thing, a 1" secondary mirror, :sadeyes:
Anyone have a 1" secondary mirror they no longer need?
While it will be a travel scope, it won't be a whimpy thing. I'm looking to design it so I can attach it to an eq mount, and take the load of a small camera hanging off the focuser.
My idea at the moment is to use four 25mm poles, a detachable focuser mount, and detachable secondary mirror. This way I minimise the vertical height of the disassembled OTA. The way the project design is going, the tallest member will be the focuser. Depending on how the design evolves, the secondary may end up fixed to the spider.
Let's see what happens.
Mental.