Hi
I would like to suggest instead of screws into the wood, that a pair of
aluminum angle bolted to the ladder frame with the wood on top and a
couple of screws to hold it in place.
Screws endwise into a 2x4 are pretty weak in shear. With the angles you=
dont need a full 2x4. A piece of 1 inch plywood would work fine.
---------
Phil Chambers [ptchamb-at-svpal.org] (S.F. Bay Area - Calif. USA)
On Sat, 8 Mar 2008, Peter Natscher wrote:
>
> Jim,
>
> I think I will keep my 6 ft. ladder and add a rung between the fist and
> second rungs for using with my future 24² Dob. The 24² f/3.7 Dob eye=
piece
> height will be 88 in. straight up and between 80 and 84 in. when angled 1=
5
> degrees from the zenith. My 6 ft. ladderıs rung centers are 12 in. apa=
rt
> and I need one placed in between the lower two rungs to get my eye
> comfortably at the 84 in. eyepiece height. I thinking of using a piece o=
f
> 2x4 screwed in. That should support my weight. Do you have any thoughts=
?
> I like using ladders it offers a good way of resting as you lean on t=
hem
> and observe. I get tired of standing up to the eyepiece for hours while
> observing.
>
> Peter Natscher in Monterey
>
>
>
> From: Jim Bartolini <nytgems@No-Spam>
> Reply-To: The Astronomy Connection <sf-bay-tac@No-Spam>
> Date: Sat, 8 Mar 2008 10:13:15 -0800
> To: The Astronomy Connection <sf-bay-tac@No-Spam>
> Subject: Re: [TAC] Astronomy Ladders?
>
> Peter:
>
> I use a 5' ladder with three wide/deep steps on it (more comfortable on t=
he
> feet than the narrow wooden type).
> It also has a tray, into which I inserted an eyepiece and accessory rack.
> Weight around 25lbs. Got it at Ace
> Hardware for around $40 or so.
>
> Jim ..... :-)
>
> =========================
==============
> Jim Bartolini nytgems@No-Spam
> =========================
==============
>
> ----- Original Message -----
> From: Peter Natscher
> To: [TAC]
> Sent: Thursday, March 06, 2008 2:58 PM
> Subject: [TAC] Astronomy Ladders?
>
>
>
> Hi TACıos,
>
> Iım wondering if anyone has experience with and/or currently uses a
> astronomy ladder in observing? This type of ladder has less space betwe=
en
> the rungs, around 8 inches spacing for a more comfortable observing
> position. They are also designed similarly to orchard ladders by using =
a
> single pole opposite the steps for placement on uneven terrain.
>
> Peter Natscher
> Monterey
> --
> GSSP Web Page updated 2/25: http://www.goldenstatestarparty.org
> Who's observing where? - http://observers.org/OI-calendar/
> Mailing list preferences: http://seds.org/mailman/listinfo/sf-bay-tac
> --
> GSSP Web Page updated 2/25: http://www.goldenstatestarparty.org
> Who's observing where? - http://observers.org/OI-calendar/
> Mailing list preferences: http://seds.org/mailman/listinfo/sf-bay-tac
>
>
> --
> GSSP Web Page updated 2/25: http://www.goldenstatestarparty.org
> Who's observing where? - http://observers.org/OI-calendar/
> Mailing list preferences: http://seds.org/mailman/listinfo/sf-bay-tac
>
>
--
GSSP Web Page updated 2/25: http://www.goldenstatestarparty.org
Who's observing where? - http://observers.org/OI-calendar/
Mailing list preferences: http://seds.org/mailman/listinfo/sf-bay-tac
Received on Sat Mar 08 13:32:12 2008